Time evolution of electric fields in CDMS detectors

S. W. Leman; D. Brandt; P. L. Brink; B. Cabrera; H. Chagani; M. Cherry; P. Cushman; E. Do Couto E Silva; T. Doughty; E. Figueroa-Feliciano; V. Mandic; K. A. McCarthy; N. Mirabolfathi; M. Pyle; A. Reisetter; R. Resch; B. Sadoulet; B. Serfass; K. M. Sundqvist; A. Tomada; B. A. Young; J. Zhang

doi:10.1007/s10909-012-0465-2

Time evolution of electric fields in CDMS detectors

S. W. Leman^*, D. Brandt, P. L. Brink, B. Cabrera, H. Chagani, M. Cherry, P. Cushman, E. Do Couto E Silva, T. Doughty, E. Figueroa-Feliciano, V. Mandic, K. A. McCarthy, N. Mirabolfathi, M. Pyle, A. Reisetter, R. Resch, B. Sadoulet, B. Serfass, K. M. Sundqvist, A. TomadaB. A. Young, J. Zhang

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The Cryogenic Dark Matter Search (CDMS) utilizes large mass, 3'' diameter×1'' thick target masses as particle detectors. The target is instrumented with both phonon and ionization sensors, the later providing a ∼1 Vcm^-1 electric field in the detector bulk. Cumulative radiation exposure which creates ∼200 × 106 electron-hole pairs could be sufficient to produce a comparable reverse field in the detector thereby degrading the ionization channel performance, if it was not shielded by image charges on the electrodes. 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. Surprisingly, this simple model is not sufficient to explain the degradation of detector performance. Our most recent results and interpretation are discussed.

Original language	English (US)
Pages (from-to)	1099-1105
Number of pages	7
Journal	Journal of Low Temperature Physics
Volume	167
Issue number	5-6
DOIs	https://doi.org/10.1007/s10909-012-0465-2
State	Published - Jun 2012

Funding

Acknowledgements This work is supported in part by the United States National Science Foundation (under Grant Nos. PHY-0847342, 0705052 , 0902182 and 1004714) and the United States Department of Energy (under contract DE-AC02-76SF00515).

Keywords

Charge transport
Cryogenic
Dark matter search
Germanium

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Materials Science
Condensed Matter Physics

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10.1007/s10909-012-0465-2

Cite this

Leman, S. W., Brandt, D., Brink, P. L., Cabrera, B., Chagani, H., Cherry, M., Cushman, P., Do Couto E Silva, 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., ... Zhang, J. (2012). Time evolution of electric fields in CDMS detectors. Journal of Low Temperature Physics, 167(5-6), 1099-1105. https://doi.org/10.1007/s10909-012-0465-2

@article{93e4ede381434f3db2bfdc1c017896a4,

title = "Time evolution of electric fields in CDMS detectors",

abstract = "The Cryogenic Dark Matter Search (CDMS) utilizes large mass, 3'' diameter×1'' thick target masses as particle detectors. The target is instrumented with both phonon and ionization sensors, the later providing a ∼1 Vcm-1 electric field in the detector bulk. Cumulative radiation exposure which creates ∼200 × 106 electron-hole pairs could be sufficient to produce a comparable reverse field in the detector thereby degrading the ionization channel performance, if it was not shielded by image charges on the electrodes. 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. Surprisingly, this simple model is not sufficient to explain the degradation of detector performance. Our most recent results and interpretation are discussed.",

keywords = "Charge transport, Cryogenic, Dark matter search, Germanium",

author = "Leman, {S. W.} and D. Brandt and Brink, {P. L.} and B. Cabrera and H. Chagani and M. Cherry and P. Cushman and {Do Couto E Silva}, E. and T. Doughty and E. Figueroa-Feliciano and V. Mandic and McCarthy, {K. A.} and N. Mirabolfathi and M. Pyle and A. Reisetter and R. Resch and B. Sadoulet and B. Serfass and Sundqvist, {K. M.} and A. Tomada and Young, {B. A.} and J. Zhang",

note = "Funding Information: Acknowledgements This work is supported in part by the United States National Science Foundation (under Grant Nos. PHY-0847342, 0705052 , 0902182 and 1004714) and the United States Department of Energy (under contract DE-AC02-76SF00515).",

year = "2012",

month = jun,

doi = "10.1007/s10909-012-0465-2",

language = "English (US)",

volume = "167",

pages = "1099--1105",

journal = "Journal of Low Temperature Physics",

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Leman, SW, Brandt, D, Brink, PL, Cabrera, B, Chagani, H, Cherry, M, Cushman, P, Do Couto E Silva, E, Doughty, T, Figueroa-Feliciano, E, Mandic, V, McCarthy, KA, Mirabolfathi, N, Pyle, M, Reisetter, A, Resch, R, Sadoulet, B, Serfass, B, Sundqvist, KM, Tomada, A, Young, BA & Zhang, J 2012, 'Time evolution of electric fields in CDMS detectors', Journal of Low Temperature Physics, vol. 167, no. 5-6, pp. 1099-1105. https://doi.org/10.1007/s10909-012-0465-2

TY - JOUR

T1 - Time evolution of electric fields in CDMS detectors

AU - Leman, S. W.

AU - Brandt, D.

AU - Brink, P. L.

AU - Cabrera, B.

AU - Chagani, H.

AU - Cherry, M.

AU - Cushman, P.

AU - Do Couto E Silva, E.

AU - Doughty, T.

AU - Figueroa-Feliciano, E.

AU - Mandic, V.

AU - McCarthy, K. A.

AU - Mirabolfathi, N.

AU - Pyle, M.

AU - Reisetter, A.

AU - Resch, R.

AU - Sadoulet, B.

AU - Serfass, B.

AU - Sundqvist, K. M.

AU - Tomada, A.

AU - Young, B. A.

AU - Zhang, J.

N1 - Funding Information: Acknowledgements This work is supported in part by the United States National Science Foundation (under Grant Nos. PHY-0847342, 0705052 , 0902182 and 1004714) and the United States Department of Energy (under contract DE-AC02-76SF00515).

PY - 2012/6

Y1 - 2012/6

N2 - The Cryogenic Dark Matter Search (CDMS) utilizes large mass, 3'' diameter×1'' thick target masses as particle detectors. The target is instrumented with both phonon and ionization sensors, the later providing a ∼1 Vcm-1 electric field in the detector bulk. Cumulative radiation exposure which creates ∼200 × 106 electron-hole pairs could be sufficient to produce a comparable reverse field in the detector thereby degrading the ionization channel performance, if it was not shielded by image charges on the electrodes. 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. Surprisingly, this simple model is not sufficient to explain the degradation of detector performance. Our most recent results and interpretation are discussed.

AB - The Cryogenic Dark Matter Search (CDMS) utilizes large mass, 3'' diameter×1'' thick target masses as particle detectors. The target is instrumented with both phonon and ionization sensors, the later providing a ∼1 Vcm-1 electric field in the detector bulk. Cumulative radiation exposure which creates ∼200 × 106 electron-hole pairs could be sufficient to produce a comparable reverse field in the detector thereby degrading the ionization channel performance, if it was not shielded by image charges on the electrodes. 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. Surprisingly, this simple model is not sufficient to explain the degradation of detector performance. Our most recent results and interpretation are discussed.

KW - Charge transport

KW - Cryogenic

KW - Dark matter search

KW - Germanium

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U2 - 10.1007/s10909-012-0465-2

DO - 10.1007/s10909-012-0465-2

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SN - 0022-2291

VL - 167

SP - 1099

EP - 1105

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 5-6

ER -

Time evolution of electric fields in CDMS detectors

Abstract

Funding

Keywords

ASJC Scopus subject areas

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