CERN Accelerating science

Article
Report number	FERMILAB-CONF-09-173-APC
Title	Crystal Collimation Studies at the Tevatron (T-980)
Author(s)	Mokhov, N V (Fermilab) ; Annala, G E (Fermilab) ; Apyan, A (Fermilab) ; Carrigan, R A (Fermilab) ; Drozhdin, A I (Fermilab) ; Johnson, T R (Fermilab) ; Legan, A M (Fermilab) ; Reilly, R E (Fermilab) ; Shiltsev, V (Fermilab) ; Still, D A (Fermilab) ; Tesarek, R J (Fermilab) ; Zagel, J (Fermilab) ; Peggs, S (Brookhaven) ; Assmann, R W (CERN) ; Previtali, V (CERN) ; Redaelli, S (CERN) ; Scandale, W (CERN) ; Shiraishi, S (Chicago U.) ; Chesnokov, Y A (Serpukhov, IHEP) ; Yazynin, I A (Serpukhov, IHEP) ; Guidi, V (INFN, Ferrara) ; Prest, M (Insubria U., Como) ; Ivanov, Y M (St. Petersburg, INP)
Publication	2010
In:	Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE1GRC05
Subject category	Accelerators and Storage Rings
Abstract	Bent-crys­tal chan­nel­ing is a tech­nique with a po­ten­tial to in­crease the beam-ha­lo col­li­ma­tion ef­fi­cien­cy at high-en­er­gy col­lid­ers. First mea­sure­ments at the Teva­tron in 2005 have shown that using a 5-mm sil­i­con crys­tal to de­flect the pro­ton beam halo onto a sec­ondary col­li­ma­tor im­proves the sys­tem per­for­mance by re­duc­ing the ma­chine impedance, beam loss­es in the col­lid­er de­tec­tors and ir­ra­di­a­tion of the su­per­con­duct­ing mag­nets, all in agree­ment with sim­u­la­tions. Re­cent re­sults, ob­tained with sub­stan­tial­ly im­proved go­niome­ter and en­hanced beam di­ag­nos­tics, are re­port­ed show­ing chan­nel­ing col­li­ma­tion of the  1-TeV cir­cu­lat­ing pro­ton beam halo at the Teva­tron col­lid­er. Com­pre­hen­sive re­sults of com­put­er mod­el­ing are pre­sent­ed which allow fur­ther de­vel­op­ments of the T-980 ex­per­i­ment to­wards a ro­bust sys­tem com­pat­i­ble with re­quire­ments to high-ef­fi­cient col­li­ma­tion at the Teva­tron and LHC hadron col­lid­ers.

Corresponding record in: Inspire