Keyword: interface
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MOPB09 The Design and Manufacturing of Superconducting Undulator Magnets for the Advanced Photon Source Upgrade magnet-design, undulator, photon, storage-ring 41
 
  • E.A. Anliker, Q.B. Hasse, Y. Ivanyushenkov, M. Kasa, Y. Shiroyanagi
    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) will include four full length Superconducting Undulators (SCUs). These SCUs require new undulator magnets to achieve the required performance of the new machine. The magnets are fabricated from low carbon steel and wound with NbTi superconductor. To meet the needs of the users of the new machine these magnets will be manufactured in different lengths and magnetic periods to accommodate SCUs in both inline and canted configurations. Because the magnets for the SCUs cannot be shimmed like permanent magnet undulators, they need to have very tight tolerances for the poles and the winding grooves. This poses unique manufacturing and fabrication challenges. This paper will cover the design of the 1.9 m long magnets for the inline SCUs, their measurement data, lessons learned from manufacturing, and an overview of design changes that were made for the magnets to be used in the canted SCU configurations.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB09  
About • paper received ※ 21 July 2021       paper accepted ※ 29 October 2021       issue date ※ 05 November 2021  
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MOPC08 Compact X-Ray and Bremsstrahlung Collimator for LCLS-II alignment, FEL, photon, vacuum 68
 
  • N.A. Boiadjieva, D.M. Fritz, T. Rabedeau
    SLAC, Menlo Park, California, USA
 
  Beam collimation is crucial to maintaining machine and personnel safety during LCLS-II operation. The high density of optics and beam transport components needed to steer the beam to multiple beam lines places a premium on compact collimator design. This presentation discusses a compact collimator consisting of an X-ray beam power collimator, a burn through monitor (BTM) designed to detect failure of the X-ray beam collimator, and a Bremsstrahlung collimator. The collimator body is a monolith machined from CuCrZr (C18150) that eliminates costly braze operations and reduces assembly time and complexity. Sintered high thermal conductivity SiC is employed as the X-ray absorber with design provisions incorporated to permit the inclusion of additional absorbers (e.g. diamond). The allowed FEL beam power is limited to 100W. Finite element analyses ensure that the power absorber remains in safe temperature and stress regimes under the maximum power loading and smallest expected beam dimensions. The beam power will be limited via credited controls placed on the electron beam. Beam containment requirements stipulate the inclusion of a monitor to detect burn through events owing to absorber failure. The BTM is a gas-filled, thin wall vessel which, if illuminated by the beam, will burn through and release the contained gas and trip pressure switches that initiate beam shutdown. The beam absorber and BTM shadow the Bremsstrahlung collimator shielding after appropriate propagation of manufacturing, assembly, and installation tolerances. Tooling is developed to minimize assembly complexity and ensure minimal alignment errors.  
poster icon Poster MOPC08 [0.950 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC08  
About • paper received ※ 21 July 2021       paper accepted ※ 13 October 2021       issue date ※ 08 November 2021  
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MOPC11 Discrete Photon Absorbers for the APS-Upgrade Storage Ring Vacuum System photon, vacuum, storage-ring, electron 75
 
  • O.K. Mulvany, B. Billett, B. Brajuskovic, J.A. Carter, A. McElderry, R.R. Swanson
    ANL, Lemont, Illinois, USA
 
  Funding: This work is supported by the U.S. Department of Energy, Office of Science under Contract No. DE-AC02-06CH11357.
The Advanced Photon Source Upgrade storage ring arc vacuum system features a diverse set of photon beam-intercepting components, including five discrete photon absorbers and a series of small-aperture vacuum chambers that shadow downstream components. The discrete photon absorbers, typically fabricated from electron beam-welded GlidCop AL-15, are subject to heat loads ranging from approximately 170 to 3400 watts, with a peak power density up to approximately 610 W/mm2 at normal incidence. Four of the five photon absorber designs are housed in vacuum chambers, including three that are mounted to the antechambers of curved aluminum extrusion-based L-bend vacuum chambers and one that is mounted to a stainless steel vacuum-pumping cross. Furthermore, two of the photon absorbers that are mounted to L-bend vacuum chambers are equipped with position-adjustment mechanisms, which are necessitated by the challenging design and fabrication of the curved vacuum chambers. The fifth photon absorber, unlike the rest, is a brazed design that is integral in sealing the vacuum system and intercepts approximately 170 watts. Each photon absorber design was optimized with thermal-structural finite element analyses while ensuring functional and spatial requirements were met. Some of these requirements include meeting internal high-heat-load component design criteria, respecting challenging component interfaces and alignment requirements, and minimizing impedance effects. Furthermore, photon beam scattering effects called for the use of scattering shields on three designs to minimize potential heating of vacuum chambers. This paper details the careful balance of functionality and manufacturability, and the overall design process followed to achieve the final designs.
 
poster icon Poster MOPC11 [8.305 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC11  
About • paper received ※ 19 July 2021       paper accepted ※ 13 October 2021       issue date ※ 01 November 2021  
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TUPC06 A Review of Ultrasonic Additive Manufacturing for Particle Accelerator Applications electron, controls, embedded, electronics 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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TUPC14 Copper Braid Heat Conductors for Sirius Cryogenic X-Ray Optics cryogenics, vacuum, optics, radiation 207
 
  • F.R. Lena, G.V. Claudiano, J.C. Corsaletti, R.R. Geraldes, D.Y. Kakizaki, R.L. Parise, M. Saveri Silva, M.S. Souza, L.M. Volpe
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
The low emittance and high photon flux beam present at the 4th-generation Sirius synchrotron light source beamlines result in high energy densities and high heat loads at some specific X-ray optics such as monochromators and white beam mirrors. This challenges the design of such systems since the introduction of thermal stresses may lead to optical surface deformation and beam degradation. Thus, to keep the systems within acceptable deformations some of the optical elements are cryogenically cooled. However, this poses the requirements of decoupling the thermal sinks (cryostats) from the optics and the mechanisms to maintain their desired degrees of freedom for alignment and dynamic operation. In this context we present the development of low-stiffness copper-braid-based heat conductors, summarizing the motivation and main aspects regarding their fabrication and application at the beamlines.
 
poster icon Poster TUPC14 [1.783 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPC14  
About • paper received ※ 28 July 2021       paper accepted ※ 19 October 2021       issue date ※ 30 October 2021  
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TUPC15 A New Ultra-Stable Variable Projection Microscope for the APS Upgrade of 32-ID focusing, optics, synchrotron, photon 211
 
  • S.J. Bean, V. De Andrade, A. Deriy, K. Fezzaa, T. Graber, J. Matus, C.A. Preissner, D. Shu
    ANL, Lemont, Illinois, USA
 
  Funding: Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility, operated for the DOE Office of Science by Argonne National Laboratory under Contract No.DE-AC02-06CH11357
A new nano-computed tomography projection microscope (n-CT) is being designed as part the Advanced Photon Source Upgrade (APS-U) beamline enhancement at sector 32-ID. The n-CT will take advantage of the APS-U source and provide new capabilities to the imaging program at 32-ID. A Kirkpatrick and Baez (KB) mirror-based nanofocusing optics [1,2] will be implemented in this design. To meet the n-CT imaging goals, it is the desire to have sub 10 nanometer vibrational and thermal drift stability over 10-minute measurement durations between the optic and the sample. In addition to the stability requirements, it is desired to have a variable length sample projection axis of up to 450 mm. Such stability and motion requirements are challenging to accomplish simultaneously due to performance limitations of traditional motion mechanics and present a significant engineering challenge. To overcome these limitations, the proposed n-CT design incorporates granite air bearing concepts initially used in the Velociprobe [3]. These types of granite stages have been incorporated into many designs at APS [4] and at other synchrotron facilities [5]. Utilizing the granite air bearing concept, in tandem with other design aspects in the instrument, the requirements become reachable. A novel multi-degree of freedom wedge configuration is also incorporated to overcome space limitations. The design of this instrument is described in this paper.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPC15  
About • paper received ※ 12 August 2021       paper accepted ※ 19 October 2021       issue date ※ 02 November 2021  
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WEOA01 CAD Integration for PETRA-IV lattice, experiment, FEL, photon 215
 
  • B. List, L. Hagge, M. Hüning, D. Miller, P.-O. Petersen
    DESY, Hamburg, Germany
 
  The PETRA-IV next-generation synchrotron radiation source planned at DESY is currently in preparation as successor of PETRA-III, with a completely new accelerator and a new experimental hall, while existing buildings, tunnels and experimental beamlines will be retained where possible. The Technical Design Report is due to be completed by the end of 2022. A CAD integration model has been set up for the complete accelerator and photon science complex. It combines the contributions of all relevant trades, the accelerator components, supply infrastructure, installations, frames, tunnels and buildings, and the design of the campus. The CAD model structure is aligned with the project’s part breakdown structure (PBS) and the Work Breakdown Structure (WBS) to facilitate integration with systems engineering and reflect responsibility within the project organization. Within the model, it is possible to switch between different levels of detail for space allocation (DG1 - "black box"), interface definition (DG2 - "grey box") and detailed design (DG3 - "white box"), separating layout from design, while ensuring their consistency. Placement of accelerator components is directly governed by the lattice through direct access to spreadsheet data, allowing fast design changes after a lattice update and ensuring consistency between mechanical and lattice design. The resulting model will support the complete facility lifecycle, from layout and design to fabrication, installation and operation. The presentation explains the tasks and requirements of the CAD integration process and uses examples to explain the structure and the modeling methodology of the CAD integration model.  
slides icon Slides WEOA01 [9.470 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEOA01  
About • paper received ※ 12 August 2021       paper accepted ※ 16 October 2021       issue date ※ 09 November 2021  
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WEPA11 Design of Monochromatic and White Beam Fluorescence Screen Monitors for XAIRA Beamline at the ALBA Synchrotron alignment, synchrotron, simulation, GUI 249
 
  • J.M. Álvarez, C. Colldelram, N González, J. Juanhuix, J. Nicolás, I. Šics
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
 
  XAIRA, the hard X-ray microfocus beamline at ALBA, includes three monochromatic fluorescence screens and one water cooled white beam monitor in its layout, mounting respectively YAG:Ce and polycrystalline CVD diamond as scintillator screens. All monitors share the same design scheme, with a re-entrant viewport for the visualization system that allows reducing the working distance, as required for high magnification imaging. The scintillator screen assembly is held by the same CF63 flange, making the whole system very compact and stable. The re-entrant flange is driven by a stepper motor actuated linear stage that positions or retracts the screen with respect to the beam path. To cope with high power density (18, 6 W/m2) on the white beam monitor 100 µm-thick diamond screen, an InGa-based cooling system has been developed. The general design of the new fluorescence screens, to be used also in other ALBA’s upcoming beamlines, with particular detail on the water-cooled white beam monitor, is described here.  
poster icon Poster WEPA11 [0.913 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA11  
About • paper received ※ 25 July 2021       paper accepted ※ 19 October 2021       issue date ※ 04 November 2021  
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WEPA13 Design of a High-Precision Lifting System for the HL-LHC Heavy Components in the Interaction Region alignment, radiation, interaction-region, cavity 255
 
  • F. Micolon, M. Sosin
    CERN, Meyrin, Switzerland
 
  Given the high radiation level and the tight alignment tolerances, the HL-LHC interaction region components are designed to be realigned remotely using motorized supporting jacks, as human interventions in these zones must be limited to the strict minimum. A position adjustment system will allow a vertical and horizontal displacement of each jack support by at least ±2.5 mm with a resolution of less than 10 µm. The weight of the supported elements, up to 170 kN and transverse loads reaching 30 kN, will have to be remotely moved by means of mechanical actuators. The system will be exposed to a cumulated radiation dose of up to 2 MGy during the 15 years of lifetime. To comply with these requirements, an extensive de-sign effort has been initiated at CERN to study the possible system layouts. This includes the prototyping of various solutions, studying subsystems through dedicated test setups and using simulations to obtain a clear under-standing of the mechanical principles at play. This paper reports on the work undertaken to design the high-precision lifting system, the various mechanical analysis carried out, and their main outcome. It reviews the proposed solutions and their expected alignment performance.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA13  
About • paper received ※ 15 July 2021       paper accepted ※ 19 October 2021       issue date ※ 30 October 2021  
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WEPB08 Multibody Simulations with Reduced Order Flexible Bodies Obtained by FEA simulation, experiment, damping, SRF 286
 
  • P. Brumund, T. Dehaeze
    ESRF, Grenoble, France
  • T. Dehaeze
    PML, Liège, Belgium
 
  Tighter specifications in synchrotron instrumentation development force the design engineers more and more often to choose a mechatronics design approach. This includes actively controlled systems that need to be properly designed. The new Nano Active Stabilization System (NASS) for the ESRF beamline ID31 was designed with such an approach. We chose a multi-body design modelling approach for the development of the NASS end-station. Significance of such models depend strongly on its input and consideration of the right stiffness of the system’s components and subsystems. For that matter, we considered sub-components in the multi-body model as reduced order flexible bodies representing the component’s modal behaviour with reduced mass and stiffness matrices obtained from finite element analysis (FEA) models. These matrices were created from FEA models via modal reduction techniques, more specifically the component mode synthesis (CMS). This makes this design approach a combined multibody-FEA technique. We validated the technique with a test bench that confirmed the good modelling capabilities using reduced order flexible body models obtained from FEA for an amplified piezoelectric actuator (APA).  
poster icon Poster WEPB08 [1.486 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPB08  
About • paper received ※ 16 July 2021       paper accepted ※ 27 September 2021       issue date ※ 31 October 2021  
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WEPC03 Electrochemistry and Microfluidic Environments for the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS experiment, controls, 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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THOA02 A New Traveling Interferometric Scheme for the APS Upgrade of the 2-ID Bionanoprobe cryogenics, coupling, GUI, photon 345
 
  • S.J. Bean, S. Chen, T. Graber, C. Jacobsen, B. Lai, E.R. Maxey, T. Mooney, C.A. Preissner, X. Shi, D. Shu, J. Tan, W. Wojcik
    ANL, Lemont, Illinois, USA
 
  Funding: Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility, operated for the DOE Office of Science by Argonne National Laboratory under Contract No.DE-AC02-06CH11357
The Advanced Photon Source (APS) at Argonne National Laboratory (ANL) is being upgraded to a multi-bend achromat (MBA) lattice storage ring which will increase brightness and coherent flux by several orders of magnitude. As part of this upgrade a total of 15 beamlines were selected to be enhanced to take advantage of the new source ’ these are designated as ’Enhanced Beamlines’. Among these is the enhancement to 2-ID, which includes an upgrade and move of the existing Bionanoprobe (BNP) from 9-ID [1]. This instrument will become the second generation Bionanoprobe II (BNP-II) with intent of studying cryogenic samples with sub-10 nm resolution. This upgrade requires a high performing metrology configuration and design to achieve the desired spatial resolution while adapting to the various constraints of the instrument. The cryogenic sample environment and detection constraints offer significant challenges for implementing a metrology scheme. In this paper we report on the new traveling interferometer configuration proposed for BNP-II.
 
slides icon Slides THOA02 [1.580 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-THOA02  
About • paper received ※ 29 July 2021       paper accepted ※ 13 October 2021       issue date ※ 29 October 2021  
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THOB01 Thermal Contact Conductance in a Typical Silicon Crystal Assembly Found in Particle Accelerators simulation, controls, 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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slides icon Slides THOB01 [11.322 MB]  
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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