Beam Halo Measurements at UMER and the JLAB FEL Using an Adaptive Masking Method

Conference · Tue Mar 01 00:00:00 EST 2011

OSTI ID:1020754

Zhang, H D; Fiorito, R B; Kishek, R A; O'Shea, P G; Shkvarunets, A G; Benson, S V; Douglas, D; Wilson, F G; Zhang, S

Beam halo is a chal­leng­ing issue for in­tense beams since it can cause beam loss, emit­tance growth, nu­cle­ar ac­ti­va­tion and sec­ondary elec­tron emis­sion. Be­cause of the po­ten­tial­ly low num­ber of par­ti­cles in the halo com­pared with beam core, tra­di­tion­al imag­ing meth­ods may not have suf­fi­cient con­trast to de­tect faint halos. We have de­vel­oped a high dy­nam­ic range, adap­tive mask­ing method to mea­sure halo using a dig­i­tal mi­cro-mir­ror array de­vice and demon­strat­ed its ef­fec­tive­ness ex­per­i­men­tal­ly on the Uni­ver­si­ty of Mary­land Elec­tron Ring (UMER). We also re­port on sim­i­lar ex­per­i­ments cur­rent­ly in progress at the Jef­fer­son Lab Free Elec­tron Laser (FEL) using this method.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1020754
• Report Number(s): JLAB-FEL-11-1353; DOE/OR/23177-1613; TRN: US1103786
• Resource Relation: Conference: PAC 2011, 28 Mar - 1 Apr 2011, New York, NY
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
LASERS
BEAMS
NUCLEAR HALOS