Title :
Improvements to the CESR injector and injection process
Author :
Henderson, S. ; Codner, G. ; Forster, M. ; Giannella, M. ; Greenwald, S. ; Hemmie, G. ; Holtzapple, R. ; Hylas, J. ; Littauer, R. ; Meller, R. ; Peck, S. ; Rubin, D. ; Sikora, J.
Author_Institution :
Lab. of Nucl. Studies, Cornell Univ., Ithaca, NY, USA
Abstract :
It is essential that the storage-ring beam injection time be minimized at an e+e- collider factory in order to maximize the integrated luminosity output of the facility. We describe a program of improvements to the CESR injector chain and injection process which have resulted in a reduction in the CESR fill time of ~40%. This has in turn allowed shorter high-energy-physics run lengths so that a higher average luminosity is maintained. Shorter fill times have resulted from increased linac beam intensity, stability and reliability, improved synchrotron transmission, faster machine condition switching time, improved CESR injection efficiency and a change to the CESR filling cycle in which both the positron and electron beam currents are topped up at the end of a run
Keywords :
colliding beam accelerators; electron accelerators; particle beam injection; storage rings; synchrotrons; CESR injector improvements; higher average luminosity; integrated luminosity output; machine condition; positron+electron collider; storage-ring beam injection time; synchrotron transmission; Acceleration; Electron beams; Filling; Linear particle accelerator; Maintenance; Particle beam injection; Particle beams; Positrons; Production facilities; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988159
