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SUMMARY:Beam-beam compensation in a collider based on energy recovery lina
 c and storage ring
DTSTART;VALUE=DATE-TIME:20200713T131200Z
DTEND;VALUE=DATE-TIME:20200713T131300Z
DTSTAMP;VALUE=DATE-TIME:20261014T223355Z
UID:indico-contribution-1792@indico.inp.nsk.su
DESCRIPTION:Speakers: Shamil Lachynov (Novosibirsk State University\, Budk
 er Institute of Nuclear Physics)\nOne of the aims of new circular collider
  projects is further increasing in their luminosity. The high space charge
  electromagnetic field at the meeting points limits the achievable current
  densities and consequently the luminosity. Non-linear focusing compensati
 on in a storage ring done by the opposite-charge beam circulating in anoth
 er storage ring was proposed and tested many years ago. Ya. S. Derbenev ha
 s shown that such a scheme suffers from tune shifts of coherent betatron o
 scillations\, which move betatron frequencies toward the nearest integer o
 r half-integer resonance. \nIn this paper\, the collider based on electron
  energy recovery linac (ERL) and  “figure-8” positron storage ring wit
 h beams of equal currents is considered. Positrons are circulating in a tw
 o-loop storage ring (positron-positron collider)\, and electron-electron c
 ollider uses ERL\, as in original Tigner’s proposal.  Thus\, a collision
  of four bunches and space-charge compensation in a multi-bunch mode can b
 e ensured. The mathematical and numerical analysis of this configuration i
 s presented.\nResults of researches supported by RBRF grant 15-02-07776 we
 re used in this work.\n\nhttps://indico.inp.nsk.su/event/24/contributions/
 1792/
LOCATION:
URL:https://indico.inp.nsk.su/event/24/contributions/1792/
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