Title :
Single bunch longitudinal measurements of the Cornell Electron-Positron Storage Ring with the superconducting RF cavities
Author :
Holtzapple, R. ; Rice, D.
Author_Institution :
Cornell Univ., Ithaca, NY, USA
Abstract :
As part of the Phase III luminosity upgrade, the Cornell Electron-Positron Storage Ring (CESR) RF system has been upgraded from normal conducting (NRF) to superconducting (SRF) cavities. The new superconducting cavities change the overall impedance of CESR and thus change the longitudinal bunch distribution. Measurements of the single bunch longitudinal distribution have been made using a streak camera on CESR with the SRF cavities present. These measurements are compared with earlier measurements on CESR with the NRF cavities. The CESR vacuum chamber impedance is determined from the current dependence of the single bunch charge distribution
Keywords :
accelerator RF systems; accelerator cavities; colliding beam accelerators; electron accelerators; particle beam bunching; particle beam diagnostics; storage rings; streak cameras; superconducting cavity resonators; CESR; Cornell Electron-Positron Storage Ring; Phase III luminosity upgrade; longitudinal bunch distribution; single bunch longitudinal measurements; streak camera; superconducting RF cavities; vacuum chamber impedance; Acceleration; Cameras; Current measurement; Distortion measurement; Elementary particle vacuum; Impedance measurement; Potential well; Radio frequency; Storage rings; Synchrotron radiation;
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.2001.988160
