Author: Sakai, H.
Paper Title Page
MOPA14 A Wide Dynamic-Range Halo Monitor for 8 GeV Proton Beams at FNAL 75
 
  • Y. Hashimoto, C. Ohmori, T. Sasaki, M. Tejima, T. Toyama, M. Uota
    KEK, Ibaraki, Japan
  • R. Ainsworth
    Fermilab, Batavia, Illinois, USA
  • H. Sakai
    Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
  • Y. Sato
    J-PARC, KEK & JAEA, Ibaraki-ken, Japan
 
  Funding: Foundation: U.S.-Japan Science and Technology Cooperation Program in High Energy Physics.
Elim­i­nat­ing harm­ful beam halos is the most im­por­tant tech­nique for high-in­ten­sity pro­ton ac­cel­er­a­tors. There­fore, beam halo di­ag­no­sis is in­dis­pens­able and be­comes more and more im­por­tant. At J-PARC, a wide dy­namic range mon­i­tor was in­stalled in the beam trans­port line in 2012. The de­vice is a two-di­men­sional beam pro­file mon­i­tor [*, **], and it has a dy­namic range of ap­prox­i­mately six dig­its of mag­ni­tude by using Op­ti­cal Tran­si­tion Ra­di­a­tion and flu­o­res­cence screens. The FNAL ac­cel­er­a­tor com­plex has been up­grad­ing through in­creased beam in­ten­sity and beam qual­ity. A new beam halo di­ag­nos­tic de­vice is re­quired in the beam trans­port line be­tween the booster and re­cy­cler. It will be man­u­fac­tured in a col­lab­o­ra­tion be­tween J-PARC and FNAL as a part of the U.S.-Japan Sci­ence and Tech­nol­ogy Co­op­er­a­tion Pro­gram in High En­ergy Physics. We are re­design­ing the mon­i­tor to sat­isfy FNAL spec­i­fi­ca­tions for beam en­ergy, in­ten­sity, and size. The equip­ment will be man­u­fac­tured at J-PARC and then shipped to FNAL in 2024. In this re­port, the de­sign of the de­vice will be de­scribed.
* https://accelconf.web.cern.ch/IBIC2013/papers/tucl2.pdf
** http://accelconf.web.cern.ch/HB2014/papers/tuo2ab04.pdf
 
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-MOPA14  
About • Received ※ 03 August 2022 — Revised ※ 07 August 2022 — Accepted ※ 11 August 2022 — Issue date ※ 09 September 2022
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