Beamlines and front ends
Beamlines
Paper Title Page
MOIO02 BM18, the New ESRF-EBS Beamline for Hierarchical Phase-Contrast Tomography 1
 
  • F. Cianciosi, A.-L. Buisson, P. Tafforeau, P. Van Vaerenbergh
    ESRF, Grenoble, France
 
  BM18 is an ESRF-EBS beamline for hierarchical tomography, it will combine sub-micron precision and the possibility to scan very large samples. The applications will include biomedical imaging, material sciences and cultural heritage. It will allow the complete scanning of a post-mortem human body at 25 µm, with the ability to zoom-in in any location to 0.7 µm. BM18 is exploiting the high-energy-coherence beam of the new EBS storage ring. The X-ray source is a short tripole wiggler that gives a 300mm-wide beam at the sample position placed 172m away from the source. Due to this beam size, nearly all of the instruments are devel-oped in-house. A new building was constructed to ac-commodate the largest synchrotron white-beam Experi-mental Hutch worldwide (42x5-6m). The main optical components are refractive lenses, slits, filters and a chop-per. There is no crystal monochromator present but the combination of the optical elements will provide high quality filtered white beams, as well as an inline mono-chromator system. The energy will span from 25 to 350 keV. The Experimental Hutch is connected by a 120m long UHV pipe with a large window at the end, followed by a last set of slits. The sample stage can position, rotate and monitor with sub-micron precision samples up to 2,5x0.6m (H x Diam.) and 300kg. The resulting machine is 4x3x5m and weighs 50 tons. The girder for detectors carries up to 9 detectors on individual 2-axis stages. It moves on air-pads on a precision marble floor up to 38m behind the sample stage to perform phase contrast imag-ing at a very high energy on large objects. The commissioning is scheduled for the beginning of 2022; the first ’friendly users’ are expected in March 2022 and the full operation will start in September 2022.  
slides icon Slides MOIO02 [16.566 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOIO02  
About • paper received ※ 17 July 2021       paper accepted ※ 03 November 2021       issue date ※ 05 November 2021  
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MOPB04 Four-Bounce Crystal Monochromators for the Sirius/LNLS Beamlines 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 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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MOPB08 Vibration Assessment at the CARNAÚBA Beamline at Sirius/LNLS 37
 
  • C.S.N.C. Bueno, F.A. Borges, G.R.B. Ferreira, R.R. Geraldes, L.M. Kofukuda, M.A.L. Moraes, G.B.Z.L. Moreno, D.V. Rocha e Silva, M.H.S. Silva, H.C.N. Tolentino, L.M. Volpe, V.B. Zilli, G.S. de Albuquerque
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
CARNAÚBA (Coherent X-Ray Nanoprobe Beamline) is the longest beamline at Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS), working in the energy range between 2.05 and 15 keV and hosting two stations: the sub-microprobe TARUMÃ, with coherent beam size varying from 550 to 120 nm; and the nanoprobe SAPOTI, with coherent beam size varying from 150 to 30 nm. Due to the long distances from the insertion device to the stations (136 and 143 m) and the extremely small beam sizes, the mechanical stability of all opto-mechanical systems along the facility is of paramount importance. In this work we present a comprehensive set of measurements of both floor stability and modal analyses for the main components, including: two side-bounce mirror systems; the four-crystal monochromator; the Kirkpatrick-Baez (KB) focalizing optics; and the station bench and the sample stage at TARUMÃ. To complement the components analyses, we also present synchronized long-distance floor acceleration measurements that make it possible to evaluate the relative stability through different floor slabs: the accelerator slab, over which the insertion device and first mirror are installed; experimental hall slab, which accommodates the second mirror; and the slabs in satellite building, consisting of three inertial blocks lying over a common roller-compacted concrete foundation, the first with the monochromator and the remaining ones with an station each. In addition to assessing the stability across this beamline, this study benchmarks the in-house design of the recently-installed mirrors, monochromators and end-stations.
 
poster icon Poster MOPB08 [3.006 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB08  
About • paper received ※ 29 July 2021       paper accepted ※ 16 September 2021       issue date ※ 09 November 2021  
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MOPC07 Weldable Copper Chromium Zirconium Mask 65
 
  • T.J. Bender, O.A. Schmidt, W.F. Toter
    ANL, Lemont, Illinois, USA
 
  Funding: Argonne National Laboratory’s work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under contract DE-AC02-06CH11357.
A novel design for a weldable copper chromium zirconium (CuCrZr) mask has been developed for use in Advanced Photon Source Upgrade (APSU) beamlines. In the past, welding has been avoided for CuCrZr; however, the approach this alternative utilizes promises to drastically reduce cost and lead time over traditional brazed CuCrZr and welded Glidcop mask designs. Multiple thermal analyses of the mask have predicted that it will meet required mechanical and thermal requirements suitable for high heat load applications. As of the writing of this paper, a prototype is being fabricated for installation and testing on the 28-ID Coherent High Energy X-ray (CHEX) beamline.
 
poster icon Poster MOPC07 [0.818 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC07  
About • paper received ※ 15 July 2021       paper accepted ※ 13 October 2021       issue date ※ 10 November 2021  
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MOPC08 Compact X-Ray and Bremsstrahlung Collimator for LCLS-II 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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MOPC10 Mechanical Design Progress of the In Situ Nanoprobe Instrument for APS-U 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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TUPA16 Design and Development of the Advanced Diffraction and Scattering Beamlines at the Australian Synchrotron 150
 
  • B.J. McMahon, J.E. Auckett, M. Fenwick, R.B. Hogan, J.A. Kimpton, R. Lippi, S. Porsa
    AS - ANSTO, Clayton, Australia
 
  The ADS beamlines are the fifth and sixth beamlines being built within the Australian Synchrotron/ANSTO BRIGHT program The two beamlines (ADS-1 and ADS-2) will operate independently with the beam generated by a powerful super-conducting multipole wiggler (SCMPW). ADS-1 will have tunable collimating optics that will combine with a fixed exit double crystal Laue monochromator (DCLM) to provide white, pink and monochromatic beam (50-150 keV) to a large end-station located outside the main synchrotron building. ADS-1 will accommodate experiments using a variety of sample stages capable of positioning large and heavy samples (up to 300 kg). The second ADS beamline, ADS-2, will take a deflected beam from the main beam using a side-bounce monochromator (SBM) that produces three monochromatic energies from 45 keV - 90 keV. The SCMPW source for the beamline produces a beam of 45 kW at 4.5 T. The major optics of the beamline include a cryogenic SBM and a cryogenic DCLM, a transfocator and multilayer VFM. The high heat load on the front end and upstream monochromator represented key challenges for the beamline design. Innovative approaches to thermal management have been developed. The high radiation environment required additional safety protocols to be implemented for beamline operation. The primary beamline endstation utilises a large gantry robot to independently position up to 4 detectors in an envelope of up to 8x3x0.3 m with a positional repeatability of ± 0.01 mm. The large motion envelope gives users access to large Q-range and allows flexibility for users to utilise large bespoke sample environments. The ADS beamlines project encompasses design, procurement, build/installation and commissioning phases. The beamline will commence user operations in July 2023.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA16  
About • paper received ※ 29 July 2021       paper accepted ※ 15 October 2021       issue date ※ 08 November 2021  
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TUPA17
Development of a Pair of Medium Energy X-Ray Absorption Spectroscopy Beamlines at Australian Synchrotron  
 
  • B.A. Pocock
    AS - ANSTO, Clayton, Australia
  • C. Glover, B. Mountford
    ASCo, Clayton, Victoria, Australia
 
  The Medium Energy X-ray absorption spectroscopy (MEX) beamlines are designed to perform routine, high throughput XAS experiments in the energy range 1.7 to 13.6 keV; split over two beamlines. This energy range is often overlooked but allows access to useful absorption K-edges of Si, P, S, Cl and Ca. Individual components of this system are relatively common, however the large number of components and broad functionality makes for a difficult integration challenge. Both beamlines are supplied by a single bending magnet, with the MEX2 beam being separated away by a pair of side bounce, cylindrically bent mirrors. MEX1 utilises a pair of multi stripe mirrors (Si, B4C and Rh) to access the desired energy range. Energy selection is performed by Double Crystal Monochromators (DCM), which are designed for both step and slew scanning. The end stations of both beamlines have Silicon Drift Detectors (SDD) and multiple ion chambers to facilitate fluorescence and transmission measurements. Sample temperatures can be controlled with any of the three helium recirculating cryostats or heaters. High Energy Resolution Fluorescence Detection (HERFD) experiments can be performed using either the single crystal spectrometer (MEX2) or the five crystal spectrometer (MEX1). MEX1 also includes a microprobe which uses a Kirkpatrick-Baez (KB) mirror to focus to a several micron spot. Given the energy range, attenuation of the photons is a particular challenge. These end stations are designed to minimise beam attenuation and maximise experiment versatility by selectively allowing high vacuum or helium environments in different regions. Removable windows and custom designed interfaces between components minimises the number of windows in the beam path which would have further attenuated photons.  
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TUPA18
Nanoprobe Beamline Stability Optimization at the Australian Synchrotron  
 
  • M. Semeraro, N. Afshar, C.M. Kewish
    AS - ANSTO, Clayton, Australia
  • B. Mountford
    ASCo, Clayton, Victoria, Australia
  • M.D. de Jonge
    ANSTO, Menai, New South Wales, Australia
 
  The Nanoprobe beamline is one of the most technically challenging beamlines within the Australian Synchrotron ANSTO BRIGHT program. The Nanoprobe will host a suite of x-ray mapping capabilities at spatial resolutions down to 60 nanometres. This extreme resolution target requires an overall length of over 100 m entailing high stability for optical components. The first part of the beamline will be sitting on the main building floor and will include two mirrors, two monochromators (DMM and DCM), a Secondary Source Aperture, plus all ancillary components. The end station will be situated in a satellite building, connected to the main building by a tunnel hosting the 50m UHV beam transfer pipe. The end station will host a pair of KB mirrors, the sample stages, multiple detectors and several beam inspection devices. There are several mechanical challenges that need to be overcome in the realisation of the beamline. Within the main building, we need to ensure the mechanical stability of the mirrors, the monochromators and the secondary source aperture. To reduce the vibration impact on the vertical displacement, we have opted for an all-horizontally deflecting optical scheme. Separated and isolated slabs are required, as well as mechanical isolation of vibration sources from the optical components. Thermal stability requirements are also challenging. Fundamental height above floor level requires thermal stability better than 0.05 C under the mirrors. Careful attention to materials selection and design is required for the end station to contain thermal drifts. Achieving these stabilities requires a careful approach as conventional HVAC systems bring vibration and air turbulence. This paper describes the design strategies adopted to optimize beamline components stability.  
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WEPA09 A New Three-Signal 2D-Beam-Position-Monitor Based on a Segmented Ionization Chamber 243
 
  • M. Goerlitz, W.A. Caliebe
    DESY, Hamburg, Germany
 
  At the DESY-beamline P64* a new three-signal beam position monitor (BPM) was constructed and tested in 2020. The BPM is based on the working-principle of an Ionization Chamber with splitted electrodes and a 120°-symmetry. The chamber is filled with an inert gas, which is ionized in presence of a beam. The gas can be changed, and the absorption can be adjusted in dependency of the X-ray-energy. The 2D-position is calculated out of three signals by a multiple-linear regression, where the position can be obtained by using a coordinate-transformation, similar to the Park-transformation, which is well-known in the field of drive control. Calibration factors have been evaluated in detail by using linear optimization algorithms including weighted residuals. The calculation is an inverse problem, which can be solved either by Simplex-algorithm or by Moore-Penrose-Pseudoinverse. The different results have been compared. Moreover, in order to validate the feasibility, calibration factors have been compared in regard to different beam sizes. Non-linearities are shown for a grid of 3x3 mm.
*W.A. Caliebe, V. Murzin, A. Kalinko, and M. Görlitz, AIP Conf. Proc. 2054, 060031 (2019).
 
poster icon Poster WEPA09 [7.778 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA09  
About • paper received ※ 16 July 2021       paper accepted ※ 05 November 2021       issue date ※ 10 November 2021  
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WEPA10 Design and Ray-Tracing of the BEATS Beamline of SESAME 246
 
  • G. Iori, M.M. Al Shehab, M.A. Al-Najdawi, A. Lausi
    SESAME, Allan, Jordan
  • M. Altissimo, I. Cudin
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
  • A. Kaprolat, J. Reyes-Herrera, P. Van Vaerenbergh
    ESRF, Grenoble, France
  • T. Kolodziej
    NSRC SOLARIS, Kraków, Poland
 
  Funding: EU H2020 framework programme for research and innovation. Grant agreement n°822535.
The BEAmline for Tomography at SESAME (BEATS) will operate an X-rayμtomography station providing service to scientists from archaeology, cultural heritage, medicine, biology, material science and engineering, geology and environmental sciences*. BEATS will have a length of 45 m with a 3-pole-wiggler source (3 T peak magnetic field at 11 mm gap). Filtered white and monochromatic beam (8 keV to 50 keV, dE/E: 2% to 3% using a double-multilayer-monochromator) modalities will be available. In this work we present the beamline optical design, verified with simulation tools included in OASYS**. The calculated flux through 1 mm2 at the sample position will be as high as 8.5×109 Ph/s/mm2 in 0.1% of the source bandwidth, for a maximum usable beam size of 70×15 mm2. Beam transverse coherence will be limited to below 1 µm by the horizontal size of the X-ray source (~2 mm FWHM). For phase contrast applications requiring enhanced coherence, front end slits can be closed to 0.5 mm horizontally, with a reduction of the available beam size and photon flux. The BEATS beamline will fulfill the needs of the tomography community of SESAME.
* H2020 project BEATS, Technical Design Report (July 2020).
** L. Rebuffi and M. Sanchez del Rio, Proc. SPIE 10388: 130080S (2017).
 
poster icon Poster WEPA10 [2.480 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA10  
About • paper received ※ 14 July 2021       paper accepted ※ 27 September 2021       issue date ※ 07 November 2021  
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WEPA11 Design of Monochromatic and White Beam Fluorescence Screen Monitors for XAIRA Beamline at the ALBA Synchrotron 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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WEPA12 X-Ray Facility for the Characterization of the ATHENA Mirror Modules at the ALBA Synchrotron 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 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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THOA03 Alignment Strategies and First Results on Sirius Beamlines 349
 
  • G.R. Rovigatti de Oliveira, H. Geraissate, R. Junqueira Leão
    LNLS, Campinas, Brazil
 
  The new Brazilian Synchrotron Light Source had its first friendly users late in 2019. During 2020, the first experimental stations were aligned and had the first beam successfully at the sample. The reference network of points used for the storage ring alignment was connected to an external network located in the experimental hall. Following this step, it was possible to extend these references to the hutches environment, where the beamlines components are installed. During the alignment of the first beamlines, a sequence of common tasks was performed, from the bluelining of the hutches footprints, to the components fine alignment. The position and orientation deviation of the main components will be presented for the Manacá, Cateretê, Ema, and Carnaúba beamlines. Two specific measurement strategies used for aligning special components will also be presented: (1) an indirect fiducialization procedure developed for most of the mirrors and their mechanisms using a mix of coordinate measuring machine and articulated measuring arm measurements, and (2) a multi-station setup arranged for the alignment of a 30 meters long detector carriage, using a mix of laser tracker, physical artifacts, and a rotary laser alignment system used as a straightness reference.  
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slides icon Slides THOA03 [2.805 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-THOA03  
About • paper received ※ 28 July 2021       paper accepted ※ 13 October 2021       issue date ※ 28 October 2021  
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