Direct Measurement of Geometric and Resistive Wakefields in Tapered Collimators for the International Linear Collider

Conference · Fri Aug 18 04:00:00 EDT 2006

OSTI ID:889668

Watson, N K; Adeya, D; Stockton, M C; U, Birmingham; Kolomensky, Y; Slater, M; Angal-Kalinin, D; Beard, C D; Densham, C J; Ellwood, G E; Zimmermann, F; Zagorodnov, I; Burton, D A; Shales, N; Smith, J D.A.; Sopczak, A; Tucker, R; Barlow, R J; Bungau, A; Jones, R M

Precise collimation of the beam halo is required in the International Linear Collider (ILC) to prevent beam losses near the interaction region that could cause unacceptable backgrounds for the physics detector. The necessarily small apertures of the collimators lead to transverse wakefields that may result in beam deflections and increased emittance. A set of collimator wakefield measurements has previously been performed in the ASSET region of the SLAC Linac. We report on the next phase of this program, which is carried out at the recently commissioned End Station A (ESA) test facility at SLAC. Measurements of resistive and geometric wakefields using tapered collimators are compared with model predictions from MAFIA and GdfidL and with analytic calculations.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 889668
• Report Number(s): SLAC-PUB-12029
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
APERTURES
Accelerators
ACCPHY
COLLIMATORS
LINEAR COLLIDERS
PHYSICS
STANFORD LINEAR ACCELERATOR CENTER