Keyword: instrumentation
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MOPAB316 Commissioning the New CERN Beam Instrumentation Following the Upgrade of the LHC Injector Chain linac, MMI, electron, diagnostics 976
 
  • F. Roncarolo, S. Bart Pedersen, J.M. Belleman, D. Belohrad, M. Bozzolan, C. Bracco, S. Di Carlo, J. Emery, A. Goldblatt, A. Guerrero, S. Levasseur, A. Navarro Fernandez, E. Renner, H.S. Sandberg, J.W. Storey, J. Tan, J. Tassan-Viol
    CERN, Geneva, Switzerland
  • A. Navarro Fernandez
    UPC, Barcelona, Spain
  • E. Renner
    TU Vienna, Wien, Austria
 
  The LHC injectors Upgrade (LIU) program has been fully implemented during the second long shutdown (LS2), which took place in 2019-20. In this context, new or upgraded beam instrumentation was developed to cope with H beam in LINAC4 and the new Proton Synchrotron Booster (PSB) injection systems which would provide high brightness proton beams in the rest of the injector complex. After a short overview of the newly installed diagnostics, the main focus of this paper will move to the instruments already commissioned with the beam. This will include LINAC4 diagnostics, the PSB H0/H monitor, the PSB Trajectory Measurement System, and the PS beam gas ionization monitor. In addition, particular emphasis will be given to the first operational experience with the new generation of fast wire scanners installed in all injector synchronous.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB316  
About • paper received ※ 19 May 2021       paper accepted ※ 17 June 2021       issue date ※ 14 August 2021  
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MOPAB418 Tracking and LET Measurements with the MiniPIX-TimePIX Detector for 60 MeV Clinical Protons detector, radiation, proton, experiment 1260
 
  • J.S.L. Yap, C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • N.J.S. Bal
    NIKHEF, Amsterdam, The Netherlands
  • M.D. Brooke
    University of Oxford, Oxford, United Kingdom
  • C. Granja, C. Oancea
    ADVACAM s.r.o, Prague, Czech Republic
  • A. Kacperek
    The Douglas Cyclotron, The Clatterbridge Cancer Centre NHS Foundation Trust, Wirral, United Kingdom
  • C.P. Welsch, J.S.L. Yap
    The University of Liverpool, Liverpool, United Kingdom
 
  Funding: EU FP7 grant agreement 215080, H2020 Marie Sklodowska-Curie grant agreement No 675265, OMA - Optimization of Medical Accelerators and the Cockcroft Institute core grant STGA00076-01.
Recent advancements in accelerator technology have led the rapid emergence of particle therapy facilities worldwide, affirming the need for enhanced characterisation methods of radiation fields and radiobiological effects. The Clatterbridge Cancer Centre, UK operates a 60 MeV proton beam to treat ocular cancers and facilitates studies into proton induced radiobiological responses. Accordingly, an indicator of radiation quality is the linear energy transfer (LET), a challenging physical quantity to measure. The MiniPIX-Timepix is a miniaturised, hybrid semiconductor pixel detector with a Timepix ASIC, enabling wide-range measurements of the deposited energy, position and direction of individual charged particles. High resolution spectrometric tracking and simultaneous energy measurements of single particles enable the beam profile, time, spatial dose mapping and LET (0.1 to >100 keV/µm) to be resolved. Measurements were performed to determine the LET spectra in silicon, at different positions along the Bragg Peak (BP). We discuss the experimental setup, preliminary results and applicability of the MiniPIX for clinical environments.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB418  
About • paper received ※ 18 May 2021       paper accepted ※ 23 July 2021       issue date ※ 25 August 2021  
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TUPAB284 BPM for the High Energy Beam Transport Line of MINERVA Project at SCK•CEN linac, experiment, electron, proton 2143
 
  • H. Kraft, L. Perrot
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
 
  This paper presents the status of developments concerning button type BPM. Results of our analytical model BPMOK will compare the measurements done at IPHI facility at CEA-Saclay and GANIL/SPIRAL2 in Caen. The measurements aims to compare the response of the analytical model depending on beam positions, sizes, intensities and energies. BPMOK is validated to predict BPM responses in order to make parametric studies. Starting from already existing BPM built for the MINERVA LINAC, the analytical model is used to design the BPM for the HEBT.  
poster icon Poster TUPAB284 [1.475 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB284  
About • paper received ※ 10 May 2021       paper accepted ※ 02 June 2021       issue date ※ 28 August 2021  
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TUPAB307 Robust Optical Instrumentation for Accelerator Alignment Using Frequency Scanning Interferometry monitoring, target, laser, radiation 2203
 
  • M. Sosin, H. Mainaud Durand, F. Micolon, V. Rude, J.M. Rutkowski
    CERN, Meyrin, Switzerland
 
  The precise alignment of components inside particle accelerators is an important engineering challenge in high-energy physics. Optical interferometry, being a precise, optical distance measurement technique, is often a method of choice in such applications. However, classical fringe-counting interferometers present several drawbacks in terms of system complexity. Due to the increasing availability of broadband, high-speed, sweeping laser sources, Frequency Scanning Interferometry (FSI) based systems, using Fourier analysis of the interference signal, are becoming a subject of growing interest. In the framework of the High-Luminosity LHC project at CERN, a range of FSI-based sensor solutions have been developed and tested. It includes the optical equipment for monitoring the position of cryogenic components inside their cryostats and FSI instrumentation like inclinometers and water-based levelling sensors. This paper presents the results of preliminary tests of these components.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB307  
About • paper received ※ 17 May 2021       paper accepted ※ 07 June 2021       issue date ※ 12 August 2021  
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WEPAB321 ALS-U Instrumentation Overview timing, electron, controls, hardware 3427
 
  • J.M. Weber, J.C. Bell, M.J. Chin, S. De Santis, R.F. Gunion, S. Murthy, W.E. Norum, G.J. Portmann, C. Serrano
    LBNL, Berkeley, California, USA
  • W.K. Lewis
    Osprey DCS LLC, Ocean City, USA
 
  Funding: Work supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231
The Advanced Light Source Upgrade (ALS-U) to a diffraction-limited storage ring with a small vacuum chamber diameter requires excellent orbit stability and a fast response orbit interlock for machine protection. The on-axis swap-out injection scheme and dual RF frequencies demand fast monitoring of pulsed injection magnets and a novel approach to timing. Recent development efforts at ALS and advances in PLLs, FPGAs, and RFSoCs that provide higher performance and mixed-signal integration can be leveraged for instrumentation solutions to these accelerator challenges. An overview of preliminary ALS-U instrumentation system designs and status will be presented.
 
poster icon Poster WEPAB321 [23.306 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB321  
About • paper received ※ 19 May 2021       paper accepted ※ 27 July 2021       issue date ※ 22 August 2021  
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THPAB265 New RF BPM Electronics for the 560 Beam Position Monitors of the APS-U Storage Ring storage-ring, electron, electronics, site 4325
 
  • P. Leban, L. Bogataj, M. Cargnelutti, U. Dragonja, P. Paglovec
    I-Tech, Solkan, Slovenia
  • A.R. Brill, J. Carwardine, W.X. Cheng, N. Sereno
    ANL, Lemont, Illinois, USA
 
  Within the upgrade of the APS storage ring to a multi-bend achromat lattice, 560 RF Beam Position Monitors will be required. The projected beam sizes are below 10 microns in both horizontal and vertical planes, putting stringent requirements on the BPM electronics resolution, long-term stability, beam current dependency, and instrument reproducibility. For the APS-U project, the Libera Brilliance+ instrument has been upgraded in technology and capabilities, including the independent multi-bunch turn-by-turn processing and an improved algorithm to further reduce the crossbar-switch artifacts. More than 140 instruments, equipped with 4 BPM electronics each, are being delivered to Argonne National Laboratory, consisting of the largest scale production for Instrumentation Technologies. In this contribution, the extensive test conditions to which the instruments were exposed and their results will be presented, as well as the beam-based long-term drift measurements with different fill patterns.  
poster icon Poster THPAB265 [9.272 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB265  
About • paper received ※ 16 May 2021       paper accepted ※ 22 June 2021       issue date ※ 21 August 2021  
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