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- Title
A new inner drift chamber for BESIII MDC.
- Authors
Dong, M. Y.; Qin, Z. H.; Ma, X. Y.; Zhang, J.; Dong, J.; Xie, W.; Xiu, Q. L.; Ju, X. D.; Liu, R. G.; Ouyang, Q.
- Abstract
Due to the beam related background, the inner chamber of BESIII MDC has aging effect after 5 years running. The gains of the inner chamber cells decrease obviously, and the max gain decrease is about 26% for the first layer cells. A new inner drift chamber with eight stereo sense wire layers as a backup for MDC is under construction, which is almost the same as the current one but using stepped endplates to shorten the wire length beyond the effective solid angle. This new structure will be of benefit to reducing the counting rate of single cell. The manufacture of each component is going smoothly, and the new inner drift chamber will be finished by the end of April 2014.
- Publication
International Journal of Modern Physics: Conference Series, 2014, Vol 31, p-1
- ISSN
2010-1945
- Publication type
Article
- DOI
10.1142/S2010194514603093