Author: Lutchman, R.
Paper Title Page
MOPAB121 Progress Towards Soft X-Ray Beam Position Monitor Development 438
 
  • B. Podobedov, C. Eng, S. Hulbert, C. Mazzoli
    BNL, Upton, New York, USA
  • D. Donetski, K. Kucharczyk, J. Liu, R. Lutchman
    Stony Brook University, Stony Brook, New York, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
X-ray beam po­si­tion mon­i­tors (BPMs) are in­stru­men­tal for stor­age ring light sources, where they re­li­ably pro­vide po­si­tional mea­sure­ments of high-power beams in hard X-ray beam­lines. How­ever, de­spite a grow­ing need, com­ing es­pe­cially from co­her­ent soft X-ray beam­lines, non-in­va­sive soft X-ray BPMs have not been demon­strated yet. We are presently work­ing on a funded R&D pro­posal to de­velop a non-in­va­sive soft X-ray BPM with mi­cron-scale res­o­lu­tion for high-power white beams. In our ap­proach, multi-pixel GaAs de­tec­tor ar­rays are placed into the beam halo and beam po­si­tion is in­ferred from the pixel pho­tocur­rent lev­els. Presently, the first de­tec­tor array pro­to­types have been man­u­fac­tured and are being pre­pared for low-power beam tests. The me­chan­i­cal de­sign of a BPM test-stand, which will be in­stalled in the 23-ID canted soft X-ray un­du­la­tor beam­line at NSLS-II, is well under way. In ad­di­tion, we are de­vel­op­ing new al­go­rithms of beam po­si­tion cal­cu­la­tion which take full ad­van­tage of ex­tended multi-pixel de­tec­tor ar­rays. In this paper we will re­view our de­sign choices and dis­cuss re­cent progress.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB121  
About • paper received ※ 03 June 2021       paper accepted ※ 13 July 2021       issue date ※ 28 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)