Keyword: electronics
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THPSC23 Upgrade of BPM System at VEPP-4M Collider positron, electron, controls, operation 368
 
  • E.A. Bekhtenev
    NSU, Novosibirsk, Russia
  • E.A. Bekhtenev, G.V. Karpov
    BINP SB RAS, Novosibirsk, Russia
  
  Funding: Ministry of Education and Science of the Russian Federation
De­vel­oped in BINP wide­band beam po­si­tion mon­i­tor (BPM) elec­tron­ics has been in­stalled at the VEPP-4M elec­tron-positron col­lider. The VEPP-4M op­er­ates with two elec­tron and two positron bunches. Wide band­width of new elec­tron­ics (200 MHz) al­lows the sep­a­rate mea­sure­ments of elec­tron and positron bunches with time in­ter­val be­tween bunches up to 18 ns. 18 BPMs lo­cated near four meet­ing points are sup­plied with new elec­tron­ics. The elec­tron­ics can mea­sure the po­si­tion of each of four bunches. BPM sys­tem works at two modes: slow closed orbit mea­sure­ments and turn-by-turn mea­sure­ments. We pre­sent de­tails of sys­tem de­sign and op­er­a­tion. 		 
 
THPSC43 Electrostatic Pick-ups for Debunched Beams at INR Linac pick-up, simulation, operation, detector 420
 
  • S.A. Gavrilov, P.I. Reinhardt-Nickoulin, I.V. Vasilyev
    RAS/INR, Moscow, Russia
  
  Pick-ups are one of the most wide­spread non-de­struc­tive di­ag­nos­tics at charged par­ti­cle ac­cel­er­a­tors. These de­tec­tors, also known as beam po­si­tion mon­i­tors, are gen­er­ally used for the cen­ter-of-mass po­si­tion mea­sure­ments of bunched beams. The paper de­scribes the re­search re­sults for in­fre­quent case of de­bunched beams op­er­a­tion. Mea­sure­ment pe­cu­liar­i­ties and dis­tinc­tive fea­tures of elec­tron­ics are pre­sented. The re­sults of test bench-based mea­sure­ments and 3D fi­nite el­e­ment sim­u­la­tions are dis­cussed.  
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