Time Evolution of Electric Fields in CDMS Detectors

Autor:	Leman, S. W., Brandt, D., Brink, P. L., Cabrera, B., Chagani, H., Cherry, M., Cushman, P., Silva, E. Do Couto E, Doughty, T., Figueroa-Feliciano, E., Mandic, V., McCarthy, K. A., Mirabolfathi, N., Pyle, M., Reisetter, A., Resch, R., Sadoulet, B., Serfass, B., Sundqvist, K. M., Tomada, A., Young, B. A., Zhang, J.
Rok vydání:	2011
Předmět:	Physics - Instrumentation and Detectors Astrophysics - Instrumentation and Methods for Astrophysics Condensed Matter - Materials Science High Energy Physics - Experiment
Druh dokumentu:	Working Paper
DOI:	10.1007/s10909-012-0465-2
Popis:	The Cryogenic Dark Matter Search (CDMS) utilizes large mass, 3" diameter x 1" thick target masses as particle detectors. The target is instrumented with both phonon and ionization sensors, the later providing a $\sim$1 V cm$^{-1}$ electric field in the detector bulk. Cumulative radiation exposure which creates $\sim 200\times 10^6$ electron-hole pairs is sufficient to produce a comparable reverse field in the detector thereby degrading the ionization channel performance. To study this, the existing CDMS detector Monte Carlo has been modified to allow for an event by event evolution of the bulk electric field, in three spatial dimensions. Our most resent results and interpretation are discussed. Comment: Low Temperature Detectors 14 conference proceeding to be published in the Journal of Low Temperature Physics
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1108.6244 Zobrazit plný text záznamu View this record from Arxiv