Title :
The proton driver for the μμ collider
Author :
Norem, J. ; Ankenbrandt, C. ; Griffin, J. ; Johnstone, C. ; Lee, S.Y. ; Popovic, M. ; Ng, K.Y. ; Brennan, M. ; Roser, T. ; Trbojevic, D. ; Wei, J.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
The proton driver for the μμ collider might operate at about 15 Hz and produce four bunches of 2.5.1013 protons/bunch at about 10 GeV (or half that number at 20-30 GeV) with an RMS bunch length of about 1 nsec. A number of options have been considered to produce these bunches using: (a) simple bunch rotation, (b) energy slewing near γt followed by a fast increase of γt which facilitates bunching, and (c) change of RF frequency in a ring-to-ring transfer. Flexible momentum compaction (FMC), or similar, lattices seem to offer control of γt even on short time scales. The large momentum spread, space charge tune shift and rapid bunching would tend to stabilize short, intense bunches, although Ipk~1600 A. Both active (harmonic cavities) and passive (inductive wall) solutions have been considered to minimize high current beam effects. Magnet and vacuum systems would be similar to other high current designs
Keywords :
colliding beam accelerators; linear accelerators; particle beam bunching; particle beam injection; particle beam stability; proton accelerators; synchrotrons; 10 GeV; 15 Hz; 1600 A; bunches; energy slewing; flexible momentum compaction; linear injector; muon collider; proton driver; space charge tune shift; stabilization; synchrotron; Acceleration; Books; Compaction; Cooling; Mesons; Particle beams; Production systems; Protons; Radio frequency; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749664
