Title :
Behavior of TPC´s in a high particle flux environment
Author :
Etkin, A. ; Eiseman, S.E. ; Foley, K.J. ; Hackenburg, R.W. ; Longacre, R.S. ; Love, W.A. ; Morris, T.W. ; Platner, E.D. ; Saulys, A.C. ; Lindenbaum, S.J. ; Chan, C.S. ; Kramer, M.A. ; Zhao, K.H. ; Zhu, Y. ; Hallman, T.J. ; Madansky, L. ; Ahmad, S. ; Bonne
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
Time projection chambers (TPCs) used in E-810 at the Alternating Gradient Synchrotron (AGS) were exposed to fluxes equivalent to more than 10/sup 7/ minimum ionizing particles per second to find if such high fluxes cause gain changes or distortions of the electric field. Initial results of these and other tests are presented and the consequences for the relativistic heavy ion collider (RHIC) TPC-based experiments are discussed. Measurements of distortions due to ion loading in the E-810 TPCs have been measured to be small even at very high effective particle fluxes. This result supports the use of TPCs at RHIC even at the highest planned luminosity. In addition, measurement of two vertex resolution and reconstruction efficiency at high track density shows that a TPC is an excellent detector for RHIC.<>
Keywords :
position sensitive particle detectors; proportional counters; RHIC; effective particle fluxes; ion loading; luminosity; reconstruction efficiency; relativistic heavy ion collider; time projection chamber; vertex resolution; Counting circuits; Distortion measurement; Electron mobility; Magnetic analysis; Magnetic fields; Magnetic heads; Particle beams; Particle tracking; Silicon; Target tracking;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.258866
