Author :
Lyapin, A. ; Gournaris, F. ; Maiheu, B. ; Miller, D. ; Wing, M. ; Chistiakova, M. ; Kolomensky, Yu. ; Sadre-Bazzaz, M. ; Petigura, E. ; Slater, M. ; Thomson, M. ; Ward, D. ; Schreiber, H.-J. ; Viti, M. ; Kostromin, S. ; Morozov, N. ; Duginov, V. ; Hildret
Abstract :
The main physics program of the International Linear Collider requires a measurement of the beam energy with a relative precision of the order 10-4 or better. A magnetic spectrometer using high resolution beam position monitors (BPMs) has been proposed to achieve this goal. A prototype spectrometer chicane employing four dipole magnets is currently under development at the End Station A in SLAC, intending to demonstrate the required resolution and stability of this method and investigate possible systematic effects and operational issues. This contribution reports on the successful commissioning of the beam position monitor system and the resolution and stability achieved. Also, the initial results from a run with a full spectrometer chicane are presented.
Keywords :
accelerator magnets; electron accelerators; linear colliders; particle beam diagnostics; particle beam stability; prototypes; BPM; ILC; SLAC; beam energy; beam position monitor system; dipole magnets; high resolution beam position monitors; international linear collider; magnetic spectrometer; prototype energy spectrometer chicane; stability; Energy measurement; Energy resolution; Extraterrestrial measurements; Magnets; Particle beam measurements; Particle beams; Prototypes; Spectroscopy; Stability; Testing;
