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Title: Analysis of 83mKr prompt scintillation signals in the PIXeY detector

Abstract

Prompt scintillation signals from 83mKr calibration sources are a useful metric to calibrate the spatial variation of light collection efficiency and electric field magnitude of a two phase liquid-gas xenon time projection chamber. Because 83mKr decays in two steps, there are two prompt scintillation pulses for each calibration event, denoted S1a and S1b. We study the ratio of S1b to S1a signal sizes in the Particle Identification in Xenon at Yale (PIXeY) experiment and its dependence on the time separation between the two signals (Δ t), notably its increase at low Δ t. Finally, in PIXeY data, the Δ t dependence of S1b/S1a is observed to exhibit two exponential components: one with a time constant of 0.05 ± 0.02 μ s, which can be attributed to processing effects and pulse overlap and one with a time constant of 10.2 ± 2.2 μs that increases in amplitude with electric drift field, the origin of which is not yet understood.

Authors:
 [1];  [2];  [1];  [2];  [3];  [4];  [3];  [5];  [2];  [3];  [6];  [3];  [1];  [3];  [2]
  1. Univ. of California, Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Yale Univ., New Haven, CT (United States)
  3. Yale Univ., New Haven, CT (United States)
  4. Univ. of Connecticut, Groton, CT (United States)
  5. Yale Univ., New Haven, CT (United States); Univ. of Connecticut, Groton, CT (United States)
  6. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); US Department of Homeland Security (DHS)
OSTI Identifier:
1616106
Grant/Contract Number:  
AC02-05CH11231; 2011-DN-007-ARI056-02; PHY-1312561; FG02-94ER40870
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 15; Journal Issue: 01; Journal ID: ISSN 1748-0221
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; cryogenic detectors; dark matter detectors; interaction of radiation with matter; noble liquid detectors; time projection chambers

Citation Formats

Singh, A. G., Bernard, E. P., Biekert, A., Boulton, E. M., Cahn, S. B., Destefano, N., Edwards, B. N. V., Gai, M., Horn, M., Larsen, N., Riffard, Q., Tennyson, B., Velan, V., Wahl, C., and McKinsey, D. N. Analysis of 83mKr prompt scintillation signals in the PIXeY detector. United States: N. p., 2020. Web. https://doi.org/10.1088/1748-0221/15/01/P01023.
Singh, A. G., Bernard, E. P., Biekert, A., Boulton, E. M., Cahn, S. B., Destefano, N., Edwards, B. N. V., Gai, M., Horn, M., Larsen, N., Riffard, Q., Tennyson, B., Velan, V., Wahl, C., & McKinsey, D. N. Analysis of 83mKr prompt scintillation signals in the PIXeY detector. United States. https://doi.org/10.1088/1748-0221/15/01/P01023
Singh, A. G., Bernard, E. P., Biekert, A., Boulton, E. M., Cahn, S. B., Destefano, N., Edwards, B. N. V., Gai, M., Horn, M., Larsen, N., Riffard, Q., Tennyson, B., Velan, V., Wahl, C., and McKinsey, D. N. Tue . "Analysis of 83mKr prompt scintillation signals in the PIXeY detector". United States. https://doi.org/10.1088/1748-0221/15/01/P01023. https://www.osti.gov/servlets/purl/1616106.
@article{osti_1616106,
title = {Analysis of 83mKr prompt scintillation signals in the PIXeY detector},
author = {Singh, A. G. and Bernard, E. P. and Biekert, A. and Boulton, E. M. and Cahn, S. B. and Destefano, N. and Edwards, B. N. V. and Gai, M. and Horn, M. and Larsen, N. and Riffard, Q. and Tennyson, B. and Velan, V. and Wahl, C. and McKinsey, D. N.},
abstractNote = {Prompt scintillation signals from 83mKr calibration sources are a useful metric to calibrate the spatial variation of light collection efficiency and electric field magnitude of a two phase liquid-gas xenon time projection chamber. Because 83mKr decays in two steps, there are two prompt scintillation pulses for each calibration event, denoted S1a and S1b. We study the ratio of S1b to S1a signal sizes in the Particle Identification in Xenon at Yale (PIXeY) experiment and its dependence on the time separation between the two signals (Δ t), notably its increase at low Δ t. Finally, in PIXeY data, the Δ t dependence of S1b/S1a is observed to exhibit two exponential components: one with a time constant of 0.05 ± 0.02 μ s, which can be attributed to processing effects and pulse overlap and one with a time constant of 10.2 ± 2.2 μs that increases in amplitude with electric drift field, the origin of which is not yet understood.},
doi = {10.1088/1748-0221/15/01/P01023},
journal = {Journal of Instrumentation},
number = 01,
volume = 15,
place = {United States},
year = {2020},
month = {1}
}

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