Title of article
Correcting for distortions due to ionization in the STAR TPC
Author/Authors
Van Buren، نويسنده , , G. and Didenko، نويسنده , , L. and Dunlop، نويسنده , , J. and Fisyak، نويسنده , , Y. and Lauret، نويسنده , , J. and Lebedev، نويسنده , , Cenk A. and Stringfellow، نويسنده , , B. and Thomas، نويسنده , , J.H. and Wieman، نويسنده , , H.، نويسنده ,
Pages
4
From page
22
To page
25
Abstract
Physics goals of the STAR Experiment at RHIC in recent (and future) years drive the need to operate the STAR TPC at ever higher luminosities, leading to increased ionization levels in the TPC gas. The resulting ionic space charge introduces field distortions in the detector which impact tracking performance. Further complications arise from ionic charge leakage into the main TPC volume from the high gain anode region. STAR has implemented corrections for these distortions based on measures of luminosity, which we present here. Additionally, we highlight a novel approach to applying the corrections on an event-by-event basis applicable in conditions of rapidly varying ionization sources.
Keywords
Calibration , Space charge , Time projection chamber
Journal title
Astroparticle Physics
Record number
2029469
Link To Document