Title :
New developments in the Next Linear Collider beam delivery system design
Author :
Tenenbaum, P. ; Eriksson, L. ; Markiewicz, T. ; Raubenheimer, T.O. ; Ringwall, A.
Author_Institution :
Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
We review many developments in the design of the beam delivery system for the Next Linear Collider. The collimation system has been redesigned to reduce nonlinearities and ease tolerances, and the IP switch line has been adjusted to permit a 300 meter longitudinal separation between the two detectors. Magnet designs have been changed to reduce the number of distinct magnet classes, produce a smoother vacuum chamber, and improve pumping. A revised set of interaction-region quadrupoles achieves the optical requirements of the system with improved beam stay-clears, and performance of the final focus at various energies has been simulated and found acceptable. Studies have begun on the set of feedbacks required to maintain the stability of the system and the changes in tolerances thus implied
Keywords :
accelerator magnets; beam handling equipment; electromagnets; electron accelerators; linear colliders; particle beam stability; NLC; Next Linear Collider beam delivery system; beam stability; beam stay-clears; collimation system; interaction-region quadrupoles; longitudinal separation; magnet designs; switch line; tolerances; vacuum chamber; Apertures; Colliding beam devices; Collimators; Large Hadron Collider; Linear accelerators; Magnetic separation; Optical pumping; Optical switches; Particle beams; Stability;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.792337
