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MOOA01 Overcoming Challenges during the Insertion Device Straight Section Component Production and Tuning Phase of the Advanced Photon Source Upgrade undulator, storage-ring, photon, vacuum 6
 
  • J.E. Lerch
    ANL, Lemont, Illinois, USA
 
  Funding: Work supported by the U.S. Department of Energy, Office of Science, under Control DE-AC02-06CH11357.
The Advanced Photon Source Upgrade (APSU) scope for insertion devices (IDs) and ID vacuum systems is extensive. Thirty-five of the 40 straight sections in the storage ring will be retrofitted with new 4.8-meter-long Superconducting Undulators (SCUs) or a mix of new and reused Hybrid-Permanent Magnet Undulators (HPMUs). All 35 ID straight sections will require new vacuum systems and new HPMU control systems. Production is well underway at multiple manufacturing sites around the world for these components. Simultaneously, ID assembly and HPMU tuning is occurring onsite at Argonne National Laboratory (ANL). In addition to component production and assembly/tuning activities, our team also started the ID swap out program at the Advanced Photon Source (APS) in late 2020. This program allows us to remove HPMUs intended for reuse from the APS storage ring and retune them to meet the APSU magnetic specifications to reduce the tuning workload during dark time. These activities have presented technical and logistical challenges that are as unique as the components themselves. Additionally, the ongoing Covid-19 pandemic presented unforeseen challenges that required new work processes to be created to sustain pace and quality of work while maintaining the high workplace safety standards required at Argonne. This paper will summarize the many challenges we encountered during the course of the project and how they were overcome.
 
slides icon Slides MOOA01 [4.995 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOOA01  
About • paper received ※ 14 July 2021       paper accepted ※ 29 October 2021       issue date ※ 06 November 2021  
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MOOB02 ALBA BL20 New Monochromator Design vacuum, GUI, optics, ISOL 14
 
  • A. Crisol, F. Bisti, C. Colldelram, M.L. Llonch, B. Molas, R. Monge, J. Nicolás, L. Nikitina, M. Quispe, L. Ribó, M. Tallarida
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
 
  LOREA beamline (BL20) at ALBA Synchrotron is a new soft X-Ray beamline dedicated to investigate electronic structure of solids by means ARPES technique. Optical design has been developed in-house so as most of beamline core opto-mechanics like Monochromator. The design made for LOREA is based on a Hettrick-Underwood grating type that operates without entrance slit. Experience cumulated over years allowed to face the challenge of designing and building UHV Monochromator. The large energy range of LOREA (10-100 eV) requires a device with 3 mirrors and 4 gratings with variable line spacing to reduce aberrations. Monochromator most important part, gratings system, has been carefully designed to be isolated from external disturbances as cooling water, and at the same time having high performances. Deep analytical calculations and FEA simulations have been carried out, as well as testing prototypes. The most innovative part of Monochromator is gratings cooling with no vacuum guards or double piping that are well-known source of troubles. Heat load is removed by copper straps in contact with a temperature controller device connected to fixed water lines. In addition, motion mechanics and services (cabling, cooling) are independent systems. Designs involved give high stability (resonance modes over 60Hz) and angular resolution below 0.1 µrad over 11° range. On mirrors side, it has been used gonio mechanics from MIRAS* plus an eutectic InGa interface between cooling and optics to decouple them. Grating and mirror holders are fully removable from main mechanics to be able to assembled at lab measuring to achieve the best fit. Instrument has been already assembled and motions characterization or stability measurements are giving expected results matching with specifications.
* L. Ribó et al., "MECHANICAL DESIGN OF MIRAS, INFRARED MICROSPECTROSCOPY BEAM LINE AT ALBA SYNCHROTRON", presented at MEDSI’16, Barcelona, Spain, September 2016, doi:10.18429/JACoW-MEDSI2016-FRAA03
 
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slides icon Slides MOOB02 [3.249 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOOB02  
About • paper received ※ 28 July 2021       paper accepted ※ 01 September 2021       issue date ※ 08 November 2021  
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MOPB02 Cryogenic Systems for Optical Elements Cooling at Sirius/LNLS optics, solenoid, cryogenics, vacuum 21
 
  • M. Saveri Silva, M.P. Calcanha, G.V. Claudiano, A.F.M. Fontoura, B.A. Francisco, L.M. Kofukuda, F.R. Lena, F. Meneau, G.B.Z.L. Moreno, G.L.M.P. Rodrigues, L. Sanfelici, H.C.N. Tolentino, L.M. Volpe
    LNLS, Campinas, Brazil
  • J.H. Řežende
    CNPEM, Campinas, SP, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
Sirius, the Brazilian 4th-generation light source at the Brazilian Synchrotron Light Laboratory (LNLS), presents high-performance requirements in terms of preserving photon-beam quality, particularly regarding wavefront integrity and position stability. In this context, it is imperative that many silicon optical elements* be effectively cooled, such that temperatures and their control-related parameters can be precisely handled to the point in which thermal effects are acceptable concerning figure distortions and drifts at different timescales. For this class of precision equipment, the required performance can only be achieved with robust thermal management.** For this, relevant aspects related to the implementation of liquid nitrogen cooling systems need to be emphasized. Currently, two solutions are present at the first-phase beamlines, according to the component thermal load: (1) an in-house low-cost system for components under moderate loads (< 50 W), such as the mirror systems and the four-bounce monochromators, comprising a commercial cryostat connected to an instrumented vessel, whose level and pressure are controlled by the standard beamline automation system that can automatically feed it from a secondary service unit or a dedicated transfer line; (2) a commercial cryocooler for high-heat-load applications (50 - 3000 W), such as the double-crystal monochromators. This work presents the in-house solution: requirements, design aspects, operation range, as well as several discoveries and improvements deployed during the commissioning of the CATERETÊ and the CARNAÚBA beamlines, such as the prevention of ice formation, stabilization of both thermal load and flow-rate, and auto-filling parameters, among others.
*TOLENTINO. Innovative instruments (…) for the CARNAÚBA beamline at Sirius-LNLS. SRI (2018).
**VOLPE. Performance validation of the thermal model for optical components. Submit to MEDSI (2020)
 
poster icon Poster MOPB02 [2.364 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB02  
About • paper received ※ 25 July 2021       paper accepted ※ 13 October 2021       issue date ※ 09 November 2021  
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MOPB03 Commissioning and Prospects of the High-Dynamic DCMs at Sirius/LNLS undulator, MMI, operation, hardware 25
 
  • R.R. Geraldes, J.L. Brito Neto, R.M. Caliari, M.A.S. Eleoterio, S.A.L. Luiz, M.A.L. Moraes, A.V. Perna, M.S. Silva, G.S. de Albuquerque
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
The High-Dynamic Double-Crystal Monochromator (HD-DCM)*,** is an opto-mechatronic system with unique architecture, and deep paradigm changes as compared to traditional beamline monochromators. Aiming at unmatching scanning possibilities and positioning stability in vertical-bounce DCMs, it has been developed since 2015 for hard X-ray beamlines at Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS). Two units are currently operational at the MANACA (macromolecular crystallography) and the EMA (extreme conditions) undulator beamlines, whereas a model for extended scanning capabilities in the energy range between 3.1 to 43 keV, the so-called HD-DCM-Lite, is in advanced development stage for two new beamlines, namely: QUATI (quick absorption spectroscopy), with a bending-magnet source; and SAPUCAIA (small-angle scattering), with an undulator source. In this work, online commissioning and operating results of the HD-DCMs are presented with emphasis on: the 10 nrad RMS (1 Hz - 2.5 kHz) pitch-parallelism performance; energy calibration; energy-dependent beam motion at sample; and flyscan with monochromator-undulator synchronization, which is a well-known control challenge at beamlines. To conclude, the Sirius HD-DCM family prospects, including the HD-DCM-Lite, are discussed.
*Geraldes, R. R., et al. "The New High-dynamics DCM for Sirius." Proc. of MEDSI 2016.
**Geraldes, R. R., et al. "The Status of the New High-Dynamic DCM for Sirius." Proc. of MEDSI 2018.
 
poster icon Poster MOPB03 [1.829 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB03  
About • paper received ※ 25 July 2021       paper accepted ※ 01 October 2021       issue date ※ 02 November 2021  
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MOPB04 Four-Bounce Crystal Monochromators for the Sirius/LNLS Beamlines alignment, cryogenics, synchrotron, experiment 29
 
  • M. Saveri Silva, L.M. Kofukuda, S.A.L. Luiz, A.P.S. Sotero, H.C.N. Tolentino, L.M. Volpe, G.S. de Albuquerque
    LNLS, Campinas, Brazil
  • L. Martins dos Santos, J.H. Řežende
    CNPEM, Campinas, SP, Brazil
 
  Funding: Ministry of Science, Technology, and Innovation (MCTI)
Beamlines of new 4th-generation machines present high-performance requirements in terms of preserving beam quality, in particular wavefront integrity and position stability at micro and nanoprobe stations. It brings about numerous efforts to cope with engineering challenges comprehending high thermal load, cooling strategy, crystal manufacturing, vibration sources, alignment and coupled motion control. This contribution presents the design and performance of a four-bounce silicon-crystal monochromator for the Sirius beamlines at the Brazilian Synchrotron Light Source (LNLS), which is basically composed of two channel-cut crystals mounted on two goniometers that counter-rotate synchronously. The mechanical design ascertained the demands for the nanoprobe and coherent scattering beamlines - namely, CARNAÚBA and CATERETÊ - focusing on solutions to minimize misalignments among the parts, to grant high stiffness and to ensure that the thermal performance would not impair beam characteristics. Hence, all parts were carefully simulated, machined, and measured before assembling. This work details mechanical, thermal, diagnostics, and dynamic aspects of the instruments, from the design phase to their installation and initial commissioning at the beamlines.
 
poster icon Poster MOPB04 [3.518 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB04  
About • paper received ※ 25 July 2021       paper accepted ※ 30 August 2021       issue date ※ 06 November 2021  
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MOPB06 Installation and Commissioning of the Exactly-Constrained X-Ray Mirror Systems for Sirius/LNLS MMI, alignment, cryogenics, optics 33
 
  • V.B. Zilli, C.S.N.C. Bueno, G.V. Claudiano, R.R. Geraldes, G.N. Kontogiorgos, F.R. Lena, S.A.L. Luiz, G.B.Z.L. Moreno, A.C. Pinto, G.L.M.P. Rodrigues, M.S. Souza, L.M. Volpe
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
Innovative exactly-constrained thermo-mechanical de-signs for beamline X-ray mirrors have been developed since 2017 at the 4th-generation Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS). Due to the specific optical layouts of the beamlines, multiple systems cover a broad range of characteristics, including: power management from a few tens of mW to tens of W, via passive room-temperature operation, water cooling or indirect cryocooling using copper braids; mirror sizes ranging from 50 mm to more than 500 mm; mirrors with single or multiple optical stripes, with and without coat-ings; and internal mechanics with one or two degrees of freedom for optimized compromise between alignment features, with sub-100-nrad resolution, and high dynamic performance, with first resonances typically above 150 Hz. Currently, nearly a dozen of these in-house mirror systems is operational or in commissioning at 5 beam-lines at Sirius: MANACÁ, CATERETÊ, CARNAÚBA, EMA and IPÊ, whereas a few more are expected by the end of 2021 with the next set of the forthcoming beam-lines. This work highlights some of the design variations and describes in detail the workflow and the lessons learned in the installation of these systems, including: modal and motion validations, as well as cleaning, as-sembling, transportation, metrology, fiducialization, alignment, baking and cooling. Finally, commissioning results are shown for dynamic and thermal stabilities, and for optical performances.
 
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poster icon Poster MOPB06 [1.959 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB06  
About • paper received ※ 12 August 2021       paper accepted ※ 13 October 2021       issue date ※ 07 November 2021  
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MOPC01 Mechanical Design of a Soft X-Ray Beam Position Monitor for the Coherent Soft X-Ray Scattering Beamline detector, undulator, photon, synchrotron 56
 
  • C. Eng, S. Hulbert, C. Mazzoli, B. Podobedov
    BNL, Upton, New York, USA
  • D. Donetski, J. Liu
    Stony Brook University, Stony Brook, New York, USA
 
  Funding: U.S. Department of Energy (DOE) Office of Science Contract No. DE-SC0012704.
Achieving photon beam stability, a critical property of modern synchrotron beamlines, requires a means of high resolution, non-invasive photon beam position measurement. While such measurement techniques exist for hard x-ray beamlines, they have yet to be achieved for soft x-ray beamlines. A new soft X-ray beam position monitor (SXBPM) design based on GaAs detector arrays is being developed and will be installed in the first optical enclosure of the Coherent Soft X-ray Scattering (CSX) beamline at the National Synchrotron Light Source II (NSLS-II). The SXBPM assembly contains four water-cooled blade assemblies, each of which will have a GaAs detector assembly mounted within it, that can be inserted into the outer edges of the CSX undulator beam with sub-micron accuracy and resolution. The primary challenges in design of the SXBPM include: 1) mechanical stability of the assembly, 2) management of the heat load from the undulator x-ray beam to protect GaAs detector assemblies from unwanted illumination, 3) assembly compactness to fit within the first optical enclosure (FOE) of the CSX beamline, and 4) accessibility for modifications. Balancing the unique design requirements of the SXBPM along with their associated constraints has resulted in the design of a non-invasive beam position monitor which will be installed in the CSX FOE as a prototype for testing and iterative improvement. The ultimate goal is development of a widely useful SXBPM instrument for soft X-ray beamlines at high brightness synchrotron storage ring facilities worldwide. The following work seeks to present an overview of the current design of the SXBPM and an analysis of the challenges encountered and the proposed solutions by which they will be addressed.
 
poster icon Poster MOPC01 [1.213 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC01  
About • paper received ※ 29 July 2021       paper accepted ※ 16 September 2021       issue date ※ 07 November 2021  
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MOPC10 Mechanical Design Progress of the In Situ Nanoprobe Instrument for APS-U vacuum, optics, synchrotron, ISOL 71
 
  • S.P. Kearney, S. Chen, B. Lai, J. Maser, T. Mooney, D. Shu
    ANL, Lemont, Illinois, USA
 
  Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.
The In Situ Nanoprobe (ISN, 19-ID) beamline will be a new best-in-class long beamline to be constructed as part of the Advanced Photon Source Upgrade (APS-U) project*,**. To achieve long working distance at high spatial resolution, the ISN instrument will be positioned 210 m downstream of the x-ray source, in a dedicated satellite building, currently under construction***. The ISN instrument will use a nano-focusing Kirkpatrick-Baez (K-B) mirror system, which will focus hard x-rays to a focal spot as small as 20 nm, with a large working distance of 61 mm. The large working distance provides space for various in situ sample cells for x-ray fluorescence tomography and ptychographic 3D imaging, allows the use of a separate, independent vacuum chambers for the optics and sample, and provides the flexibility to run experiments in vacuum or at ambient pressure. A consequence of the small spot size and large working distance is the requirement for high angular stability of the KB mirrors (5 nrad V-mirror and 16 nrad H-mirror) and high relative stability between focus spot and sample (4 nmRMS). Additional features include fly-scanning a maximum of a 2 kg sample plus in situ cell at 1 mm/s in vertical and/or horizontal directions over an area of 10 mm x 10 mm. Environmental capabilities will include heating and cooling, flow of fluids and applied fields, as required for electrochemistry and flow of gases at high temperature for catalysis. To achieve these features and precise requirements we have used precision engineering fundamentals to guide the design process. We will discuss in detail the current design of the instrument focusing on the precision engineering used to achieve the stability, metrology, and positioning requirements.
* J. Maser, et al. Metal and Mat Trans A (2014) 45: 85.
** J. Maser, et al. Microsc. Microanal. 24 (Suppl 2), 2018.
*** S. P. Kearney, et al. Synchrotron Radiat. News Volume 32 (5), 2019.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC10  
About • paper received ※ 28 July 2021       paper accepted ※ 05 October 2021       issue date ※ 27 October 2021  
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MOPC12 A New Magnetic Measurement System for the Future Low Emittance NSLS-II Storage Ring quadrupole, dipole, alignment, emittance 78
 
  • M. Musardo, T.M. Corwin, F.A. DePaola, L. Doom, R. Faussete, D.A. Harder, S.K. Sharma, T. Tanabe
    BNL, Upton, New York, USA
  • D. Assell, J. DiMarco
    Fermilab, Batavia, Illinois, USA
  • C.L. Doose, A.K. Jain
    ANL, Lemont, Illinois, USA
 
  Funding: This work was supported by DOE under contract DE-SC0012704
A new magnetic measurement system is under construc-tion at BNL for accurate field harmonic measurements and fiducialization of magnets for a future upgrade of the NSLS- II storage ring. The entire storage ring is envi-sioned to be replaced with a new lattice concept, known as Complex Bend, which superimposes dipole and high-gradient quadrupole fields. The magnetic measurement system will use rotating wire and a PCB rotating coil specifically designed for small-aperture (< 15 mm) high gradient magnets. In this paper we describe in detail the mechanical design and the data acquisition hardware and software.
 
poster icon Poster MOPC12 [3.102 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC12  
About • paper received ※ 15 July 2021       paper accepted ※ 13 October 2021       issue date ※ 03 November 2021  
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TUIO02 Mechatronics Approach for the Development of a Nano-Active-Stabilization-System SRF, instrumentation, simulation, experiment 93
 
  • T. Dehaeze, J. Bonnefoy
    ESRF, Grenoble, France
  • C.G.R.L. Collette
    ULB, Bruxelles, Belgium
 
  Funding: This research benefited from a FRIA grant from the French Community of Belgium.
With the growing number of fourth generation light sources, there is an increased need of fast positioning end-stations with nanometric precision. Such systems are usually including dedicated control strategies, and many factors may limit their performances. In order to design such complex systems in a predictive way, a mechatronic design approach also known as "model based design", may be utilized. In this paper, we present how this mechatronic design approach was used for the development of a nano-hexapod for the ESRF ID31 beamline. The chosen design approach consists of using models of the mechatronic system (including sensors, actuators and control strategies) to predict its behavior. Based on this behavior and closed-loop simulations, the elements that are limiting the performances can be identified and re-designed accordingly. This allows to make adequate choices concerning the design of the nano-hexapod and the overall mechatronic architecture early in the project and save precious time and resources. Several test benches were used to validate the models and to gain confidence on the predictability of the final system’s performances. Measured nano-hexapod’s dynamics was shown to be in very good agreement with the models. Further tests should be done in order to confirm that the performances of the system match the predicted one. The presented development approach is foreseen to be applied more frequently to future mechatronic system design at the ESRF.
 
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slides icon Slides TUIO02 [12.432 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUIO02  
About • paper received ※ 26 July 2021       paper accepted ※ 17 September 2021       issue date ※ 05 November 2021  
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TUPA02 Design of Remote Helium Mass Spectrometer Leak Detector vacuum, injection, detector, gun 123
 
  • H.Y. He, H. Song
    IHEP, Beijing, People’s Republic of China
  • J.M. Liu
    DNSC, Dongguan, People’s Republic of China
  • R.H. Liu, G.Y. Wang
    IHEP CSNS, Guangdong Province, People’s Republic of China
 
  Leak detection is the key to get a good vacuum system. For the dangerous areas, or facility with complicit structure required to be detected online, it is a hard mask to seek for the suspected leaks one after another. After studying the basic principle of helium mass leak detection, design a remote leak detector based on the PLC, as well as multi monitoring cameras, which can achieve successful injection and sniffer probe leak detection in the range of 270 degree. Compared with the manual operation, this device aims at accurately and reliably detecting leak rate, which can greatly provide technique support of online leak detection. And it can bring the value of reducing the labor intensity and ensuring personal safety.  
poster icon Poster TUPA02 [0.195 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA02  
About • paper received ※ 05 July 2021       paper accepted ※ 14 October 2021       issue date ※ 08 November 2021  
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TUPA06 Study the Active Vibration Control System of the Parallel 6-DOF Platform experiment, damping, software, synchrotron 131
 
  • R.H. Liu, H.Y. He, Z.Y. Ke, L. Liu, X.J. Nie, C.J. Ning, A.X. Wang, Y.J. Yu, D.H. Zhu
    IHEP CSNS, Guangdong Province, People’s Republic of China
  • L. Kang, J.S. Zhang
    IHEP, Beijing, People’s Republic of China
  • G.Y. Wang
    Institute of High Energy Physics, CAS, Guangdong, People’s Republic of China
 
  Funding: National Natural Science Foundation of China 11905231
With the development of high-energy synchrotron radiation light source with high energy, high brightness, low emittance and nano-scale light spot, accelerators and beamline stations have higher requirements for the stability of the system, and active vibration isolation technology has been paid more and more attention. It has become the key technology for the development of major scientific devices (such as high-energy synchrotron radiation light source, free electron laser, etc.) in the future. In this paper, an active vibration control system driven by piezoelectric ceramic actuator with strong adaptability is designed. NI Compact-RIO real-time control system and Fx-LMS adaptive filter control algorithm are used for the active vibration control system. The identification method of input and output channels and the active control module are simulated by MATLAB. And an active vibration control system based on a parallel 6-DOF platform was built for experimental verification. The experimental results show that the designed active vibration control system has a good control effect for low-frequency micro-vibration.
 
poster icon Poster TUPA06 [0.600 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA06  
About • paper received ※ 11 July 2021       paper accepted ※ 14 October 2021       issue date ※ 27 October 2021  
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TUPB11 Cryogenics Monitoring and Control System for EMBL Facilities at PETRA III cryogenics, software, EPICS, status 167
 
  • M. Bueno, S. Fiedler, L. Kolwicz-Chodak, J. Meyer, U. Ristau
    EMBL, Hamburg, Germany
 
  At the integrated facility for structural biology of the EMBL at PETRA III on the DESY campus in Hamburg, several devices need cryogenic cooling with liquid nitrogen (LN2): cryo-coolers for the DCMs, cold gas stream units for cryo-crystallography (cryo-stream) at the beamlines and for an automatic crystal harvesting system, robotic sample mounting systems at the beamlines (MARVINs) and an additional one for sample transfer from the automatic crystal harvesting system. The cryo-coolers and phase separator are connected to the central LN2 supply operated by DESY. A local LN2 phase separator installed above one the beamlines is supplying the cryo-streams, the MARVIN systems and LN2 emergency reservoir. For the cryogenic devices local servers and clients exist that monitor and operate the corresponding sensors, actuators and provide the safety logic. In addition, the local cryo-clients are integrated in a cryogenics supervision client. The supervision client allows password protected access at a monitoring level, an operator and an expert level. At the monitoring level, it offers a fast overview of the status of all sub-systems at one glance. At the higher access levels, also the control of the cryogenic sub-systems is accessible. The application can be used from remote via a VPN connection, TeamViewer software or a web client (in preparation). Because of the heterogeneity of the cryogenic devices different protocols such as TINE, EtherCAT, ADS-OCX (BECKHOFF Automation) and EPICS for interfacing had to be applied.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPB11  
About • paper received ※ 29 July 2021       paper accepted ※ 27 September 2021       issue date ※ 03 November 2021  
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TUPB12 Assessment of the Corrosion of Copper Components in the Water Cooling System of ALBA Synchrotron Light Source; Presentation of a Proposal to Mitigate the Corrosion Rate of Copper cavity, operation, radio-frequency, quadrupole 171
 
  • M. Quispe, E. Ayas, J.J. Casas, C. Colldelram, Ll. Fuentes, J.C. Giraldo, J. Iglesias, M. Pont
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
  • J. Buxadera, M. Punset
    Technical University of Catalonia, The Biomaterials, Biomechanics and Tissue Engineering, Barcelona, Spain
 
  This paper presents the most recent results on the corrosion of copper components in ALBA water cooling system. The studies have been carried out using a variety of techniques: Scanning Electron Microscopy (SEM), Energy-Dispersive X-Ray Spectroscopy (EDS) and X-Ray Diffraction (XRD). Representative samples of the Accelerator Facility were examined: Storage Ring Absorbers, Front End Masks, Radio Frequency Cavity Pipes, Experimental Line Mask, Radio Frequency Plant Pipes at Service Area and Booster Quadrupole. The studies show the presence of intergranular, pitting and generalized corrosion. The presence of copper oxide is confirmed, as well as other elements such as Aluminum, Carbon, Sulfur, Silver, Calcium, Silicon, Titanium and Iron in some regions of the samples. Likewise, other elements from circulating water such as Potassium and Chlorine have also been detected. The depth of pitting corrosion is less than 119.4 um for the samples studied, after 10 years of operation. To minimize the corrosion problem, an upgrade of the ALBA cooling system is under study. The objective is to reduce the current corrosion rate by a conservative factor of 5. This change is possible by modifying the characteristics of the cooling water, reducing the dissolved oxygen content to values below 10 ppb and increasing the pH above 7.5. Technical aspects of this upgrade are discussed in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPB12  
About • paper received ※ 23 July 2021       paper accepted ※ 16 October 2021       issue date ※ 09 November 2021  
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TUPC06 A Review of Ultrasonic Additive Manufacturing for Particle Accelerator Applications electron, embedded, electronics, interface 185
 
  • J.A. Brandt
    Enrico Fermi Institute, University of Chicago, Chicago, Illinois, USA
 
  Additive manufacturing (AM) technologies have been used for prototyping and production parts in many industries. However, due to process limitations and the unknown material properties of AM parts, there has been limited adoption of the technology in accelerator and light-source facilities. Ultrasonic Additive Manufacturing (UAM) is a hybrid additive-subtractive manufacturing process that uses a solid-state ultrasonic bonding mechanism attached to a CNC mill to join and machine metal parts in a layer-by-layer manner. The solid-state and hybrid nature of UAM ensures base material properties are retained and mitigates process limitations which traditionally inhibit integration of parts produced by other AM processes. This paper presents a review of the UAM process and its potential application to accelerator and beamline needs. Several specific areas are discussed including: replacement of traditional manufacturing approaches, such as explosion bonding to join dissimilar metals; improved internal cooling channel fabrication for thermal management; and imbedding of electronics and materials for more accurate remote sensing and radiation shielding.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPC06  
About • paper received ※ 22 July 2021       paper accepted ※ 16 October 2021       issue date ※ 05 November 2021  
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TUPC08 Design and Development of AI Augmented Robot for Surveillance of High Radiation Facilities radiation, lepton, monitoring, hardware 192
 
  • K.J. Suthar, M. White
    ANL, Lemont, Illinois, USA
  • G.K. Mistri
    MSB, Naperville, Illinois, USA
  • A.K. Suthar, S.K. Suthar
    NVHS, Naperville, Illinois, USA
 
  Scientific instruments and utility equipment during the operation of high radiation facilities such as the Advanced Photon Source at the Argonne National laboratory express a challenge to monitor. To solve this, we are developing a self-guided artificially intelligent robot that can allow us to take images to create a thermal and spatial 3D map of its surroundings while being self-driven or controlled remotely. The overall dimension of the robotic vehicle is 20 in length, 7 in width, and 10 in height, which carries a depth perception camera to guide the path, an IR camera for thermography, as well as a cluster of sensors to assist in navigation and measure temperature, radiation, and humidity of the surrounding space. This inexpensive robot is operated by an Nvidia Jetson NanoTM. All controlling and image acquisition programs and routines are written in python for ease of integration with institution-specific operating systems such as EPICS.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPC08  
About • paper received ※ 26 July 2021       paper accepted ※ 02 November 2021       issue date ※ 05 November 2021  
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TUPC11 The HD-DCM-Lite: A High-Dynamic DCM with Extended Scanning Capabilities for Sirius/LNLS Beamlines synchrotron, radiation, synchrotron-radiation, instrumentation 203
 
  • A.V. Perna, H.O.C. Duarte, R.R. Geraldes, M.A.L. Moraes, M. Saveri Silva, M.S. Souza, G.S. de Albuquerque
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
After successfully designing, installing, and commissioning two units of the High-Dynamic Double-Crystal Monochromator (HD-DCM) at the Brazilian Synchrotron Light Laboratory (LNLS) - Sirius, two more units are now required. Since they demand only a smaller energy range (5 to 35 keV), the total gap stroke of the new instruments can be significantly reduced, creating an opportunity to adapt the existing design towards the so-called HD-DCM-Lite. Removing the large gap adjustment mechanism allows a reduction of the main inertia by a factor of 5, enabling the HD-DCM-Lite to deliver energy flyscans of hundreds of eV reaching 20 cycles per second while keeping fixed exit and the pitch stability in the range of 10 nrad RMS (1 Hz - 2.5 kHz). Hence, an unparallel bridge between slow step-scan DCMs and fast channel-cut monochromators is created. This work presents the in-house development of the HD-DCM-Lite, focusing on its mechanical design, discussions on the ultimate scanning constraints (rotary stage torque, voice-coil forces, interferometers and encoders readout speed limits and subdivisional errors), and thermal management.
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPC11  
About • paper received ※ 28 July 2021       paper accepted ※ 16 October 2021       issue date ※ 27 October 2021  
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WEOB03 Development of a Linear Fast Shutter for BM05 at ESRF and BEATS at SESAME synchrotron, radiation, SRF, laser 229
 
  • C. Muñoz Pequeño, J.M. Clement, P. Thevenau, P. Van Vaerenbergh
    ESRF, Grenoble, France
 
  This paper presents the design of a new linear fast shutter for topography and tomography. A prototype will be assembled and tested at the BM05 beamline at ESRF, and another unit will be installed in the future BEATS beamline at SESAME. The application of the shutter in X-ray diffraction topography allows performance of long exposure cycles of monochromatic beam on crystal samples while preventing irradiation of the detector during readout. It can be also used during sample alignment and acquisition of X-ray tomography scans. Particularly for white-beam tomography, which uses a very high photon flux, minimizing exposure is critical to protect the sample and detector from radiation damage. This highlights the importance of obtaining a short and uniform exposure time over the beam aperture. To fulfill this objective, a new shutter based on the synchronization of two tantalum blades driven by linear brushless DC motors is under development. This versatile design can be used with both monochromatic and white-beam, and it can achieve exposure times ranging from 50 ms to 60 s for a beam size of H 80 mm x V 20 mm. The linear motors allow for a much smoother operation, preventing vibration issues reported with the old shutter. In addition, the use of linear motors rather than solenoids allows an unlimited exposure time, where the previous version used solenoids that could overheat if kept open for too long. A test bench has been constructed for the characterization of the sequence produced by the linear motors, and exposure times of 50 ms with a maximum error of 1 ms have been measured. This article describes the main features of the shutter prototype and its associated motion control system, and the results of the measurements with the motor test bench are discussed as well.  
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slides icon Slides WEOB03 [1.428 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEOB03  
About • paper received ※ 18 July 2021       paper accepted ※ 19 October 2021       issue date ※ 02 November 2021  
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WEPA06 The Beamline Motor Control System of Taiwan Photon Source vacuum, software, operation, experiment 232
 
  • C.F. Chang, C.Y. Liu
    NSRRC, Hsinchu, Taiwan
 
  Different experiments have different features, so does the optical design; however, all of them are necessary to be adjusted according to mechanism. For example, adjusting mechanism of optical element is often based on stepper motor, for stepper motor possesses high resolution ability, which can adjust mechanism to precise location. This study illustrates how motor system of our Taiwan Photon Source integrates adjusting mechanisms of stepper motor on beamline. In addition, the firmware of close-loop system is cooperated to further improve veracity of location.  
poster icon Poster WEPA06 [0.798 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA06  
About • paper received ※ 05 July 2021       paper accepted ※ 19 October 2021       issue date ※ 27 October 2021  
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WEPA07 The Fizeau System Instrument at ALBA Optics Laboratory GUI, optics, alignment, ISOL 235
 
  • L.R.M. Ribó, D. Alloza, C. Colldelram, J. Nicolás, I. Šics
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
 
  The ALBA optics laboratory has recently acquired a new Zygo Verifire HD Fizeau interferometer. The instrument has been integrated into a positioning stage to allow stitching of long x-ray optical elements. The mechanical set up, with four axes, allows for automatic positioning and alignment of the interferometer aperture to the surface under test. The longitudinal movement allows for scan of X-ray mirrors up to 1500 m long. The positioning platform includes two angles, roll and yaw, and two translations, vertical and longitudinal translations. The longitudinal translation is a custom designed linear stage. The yaw rotation is based on a sine arm mechanism. The vertical and roll motions are combined in a single stage, closely integrated around the main linear stage. The system reaches repeatabilities better than 1 µm or 1 µrad for all axes. The system is mounted on top of a vibration isolated bench in the clean room of the laboratory. The control software of the instrument allow direct control of every individual axis, and allows selecting the center of rotation for both roll and yaw. The system includes inclinometers and autocollimators to control the relative orientation between the interferometer and the mirror under test. The system is integrated to the software of the interferometer, and includes features for automatic alignment of the interferometer to the mirror, or for automatic stitching acquisition, with selectable parameters. The system allows for full three-dimensional characterization of the optical surface of mirrors and gratings, and provides height map reconstructions with accuracy in the order of 1 nm, for flat or curved surfaces with lengths up to 1500 mm.  
poster icon Poster WEPA07 [2.785 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA07  
About • paper received ※ 29 July 2021       paper accepted ※ 21 October 2021       issue date ※ 28 October 2021  
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WEPA12 X-Ray Facility for the Characterization of the ATHENA Mirror Modules at the ALBA Synchrotron detector, vacuum, synchrotron, optics 252
 
  • A. Carballedo, J.J. Casas, C. Colldelram, G. Cuní, D. Heinis, J. Marcos, O. Matilla, J. Nicolás, A. Sánchez, N. Valls Vidal
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
  • N. Barrière, M.J. Collon, G. Vacanti
    Cosine Measurement Systems, Warmond, The Netherlands
  • M. Bavdaz, I. Ferreira
    ESA-ESTEC, Noordwijk, The Netherlands
  • E. Handick, M. Krumrey, P. Mueller
    PTB, Berlin, Germany
 
  MINERVA is a new X-ray facility under construction at the ALBA synchrotron specially designed to support the development of the ATHENA (Advanced Telescope for High Energy Astrophysics) mission. The beamline design is originally based on the monochromatic pencil beam XPBF 2.0 from the Physikalisch-Technische Bundesanstalt (PTB), at BESSY II already in use at this effect. MINERVA will host the necessary metrology equipment to integrate the stacks produced by the cosine company in a mirror module (MM) and characterize their optical performances. From the opto-mechanical point of view, the beamline is made up of three main subsystems. First of all, a water-cooled multilayer toroidal mirror based on a high precision mechanical goniometer, then a sample manipulator constituted by a combination of linear stages and in-vacuum hexapod and finally an X-ray detector which trajectory follows a cylinder of about 12 m radius away from the MM. MINERVA is funded by the European Space Agency (ESA) and the Spanish Ministry of Science and Innovation. MINERVA is today under construction and will be completed to operate in 2022.  
poster icon Poster WEPA12 [1.175 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA12  
About • paper received ※ 21 July 2021       paper accepted ※ 19 October 2021       issue date ※ 09 November 2021  
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WEPA16 Development and Applications of the White Beam Position Monitor for Bending Magnet Beamlines radiation, simulation, synchrotron-radiation, synchrotron 263
 
  • C.Y. Chang, C.F. Chang, C.H. Chang, S.H. Chang, L.C. Chiang, R. Lee, B.Y. Liao, C.Y. Liu
    NSRRC, Hsinchu, Taiwan
 
  We developed a white beam position detector to be applied in beamlines with bending magnets. By 0.1 mm light-receiving opening, the beam is split and converted to a photocurrent intensity which can be used to detect the size and position of the beam is less than or equal to 50 mm, and to locate the positions of the beamline components. This is a stop-beam measurement method, so it cannot be used to monitor the beam in real time. The motorized stage of the detector has a range of motion up to ± 25 mm with position accuracy not more than 1 micrometer and vacuum capability not more than 5 × 10 -10 Torr, which is compatible with ultra-high vacuum environments. In addition, taking the thermal load 62.89 W of the TPS 02A beamline as an example, the thermal deformation of the analog detector opening lead to a result that the measured value will have a maximum of 2 micrometer from the center of the beam. Finally, and the whole system has been successfully applied in the TPS 02A beamline.all features are verified and the performance meets the requirements, Besides the positioning tasks of Mask and Slits1 was completed and the position change of the light source was detected.  
poster icon Poster WEPA16 [0.910 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA16  
About • paper received ※ 01 July 2021       paper accepted ※ 19 October 2021       issue date ※ 31 October 2021  
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WEPC02 A Cryogenic Sample Environment for the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS cryogenics, synchrotron, optics, MMI 306
 
  • F.R. Lena, C.S.N.C. Bueno, F.H. Cardoso, J.C. Carvalho, M.M. Donatti, R.R. Geraldes, L.M. Kofukuda, L.S. Perissinotto, E. Piragibe, C. Sato, H.C.N. Tolentino, W.H. Wilendorf
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology, and Innovation (MCTI)
TARUMÃ is the sub-microprobe station of CAR-NAÚBA (Coherent X-Ray Nanoprobe Beamline) at Sirius at the Brazilian Synchrotron Light Laboratory (LNLS). Covering the tender-to-hard energy range from 2.05 to 15 keV with achromatic fixed-shape optics, the fully coherent submicron focused beam can be used for multiple simultaneous advancedμand nanoscale X-ray techniques that include ptychography coherent diffraction imaging (ptycho-CDI), absorption spectroscopy (XAS), diffraction (XRD), fluorescence (XRF) and luminescence (XEOL). Among the broad range of materials of interest, studies of light elements present in soft tissues and other biological systems put TARUMÃ in a unique position in the Life and Environmental Sciences program at LNLS. Yet, to mitigate the detrimental effect of the high photon flux of the focused beam due to radiation damage, cryocooling may be required. Here we present the design and first results of a novel open-atmosphere cryogenic system for online sample conditioning down to 110 K. The high-stiffness and thermally-stable sample holder follows the predictive design approach based on precision engineering principles to preserve the nanometer-level positioning requirements, whereas a commercial nitrogen blower is used with a cold gas flow exhaustion system that has been developed in order to avoid unwanted cooling of surrounding parts and water condensation or icing.
 
poster icon Poster WEPC02 [2.172 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPC02  
About • paper received ※ 29 July 2021       paper accepted ※ 17 October 2021       issue date ※ 30 October 2021  
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WEPC03 Electrochemistry and Microfluidic Environments for the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS experiment, interface, synchrotron, detector 310
 
  • W.H. Wilendorf, R.R. Geraldes, L.M. Kofukuda, I.T. Neckel, H.C.N. Tolentino
    LNLS, Campinas, Brazil
  • P.S. Fernández
    UNICAMP, Campinas, São Paulo, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
CARNAÚBA (Coherent X-Ray Nanoprobe Beamline) is a state-of-the-art multi-technique beamline at the 4th-generation Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS), with achromatic optics and fully-coherent X-ray beam in the energy range between 2.05 and 15 keV. At the TARUMÃ station, the in-vacuum KB focusing system has been designed with a large working distance of 440 mm, allowing for a broad range of independent sample environments to be developed in open atmosphere to benefit from the spot size between 550 to 120 nm with a flux in the order of 1e11 ph/s/100mA. Hence, together with a number of different detectors that can be simultaneously used, a wide variety of studies of organic and inorganic materials and systems are possible using cutting-edge X-ray-based techniques in theμand nanoscale, including coherent diffractive imaging (CDI), fluorescence (XRF), optical luminescence (XEOL), absorption spectroscopy (XAS), and diffraction (XRD). Even though samples over the centimeter range can be taken at Tarumã, the small beam and relatively low energies point towards optimized and reduced-size sample holders for in situ experiments. This work describes two related setups that have been developed in-house: a small-volume electrochemical cell with static fluid*; and another multifunctional environment that can be used both as a microfluidic device and as an electrochemistry cell that allows for fluid control over samples deposited on a working electrode. The mechanical design of the devices, as well as the architecture for the fluid and electrical supply systems, according to the precision engineering concepts required for nanopositioning performance, are described in details.
*Vicente, Rafael A., et al., "Bragg Coherent Diffraction Imaging for In Situ Studies in Electrocatalysis," ACS nano (2021).
 
poster icon Poster WEPC03 [2.107 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPC03  
About • paper received ※ 29 July 2021       paper accepted ※ 19 October 2021       issue date ※ 07 November 2021  
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THOB01 Thermal Contact Conductance in a Typical Silicon Crystal Assembly Found in Particle Accelerators interface, simulation, experiment, ECR 353
 
  • P. Sanchez Navarro
    DLS, Oxfordshire, United Kingdom
 
  Every mirror at Diamond Light Source (the UK’s Particle Accelerator) has been installed with the premise of clamping the cooling copper manifolds as lightly as possible to minimize distortion. The problem with this approach is that the Thermal Contact Conductance (TCC) depends on the applied pressure among other factors*. The assembly is usually a symmetric stack of Copper - Indium Foil - Silicon Crystal - Indium Foil - Copper. Variables that interest the most are those that are easily adjustable in the set-up assembly (number of clamps, pressure applied and cooling water flow rate) PT100 temperature sensors have been used along the surface of the crystal and along the surface of the copper manifolds. Custom PCB units have been created for this project to act as a mean of collecting data and Matlab has been used to plot the temperature measurements vs. time. Another challenge is the creation of an accurate model in Ansys that matches reality up to a good compromise where the data that is being recorded from the sensors matches Ansys results within reason.
*Gilmore DG. Spacecraft thermal control handbook. Volume I, Volume I, [Internet]. 2002. Available from: http://app.knovel.com/hotlink/toc/id:kpSTCHVFT2/spacecraft-thermal-control
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-THOB01  
About • paper received ※ 20 July 2021       paper accepted ※ 13 October 2021       issue date ※ 06 November 2021  
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