Phonon-Based Position Determination in SuperCDMS iZIP Detectors
SuperCDMS is currently operating a 10-kg array of cryogenic germanium detectors in the Soudan Underground Laboratory to search for weakly interacting massive particles, a leading dark matter candidate. These detectors, known as iZIPs, measure ionization and athermal phonons from particle interaction...
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| Format: | Article |
| Language: | English |
| Published: |
Springer-Verlag
2017
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| Online Access: | http://hdl.handle.net/1721.1/109567 https://orcid.org/0000-0002-4435-4623 |
| _version_ | 1826201353670623232 |
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| author | Anderson, Adam Anderson, Adam Jonathan |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Anderson, Adam Anderson, Adam Jonathan |
| author_sort | Anderson, Adam |
| collection | MIT |
| description | SuperCDMS is currently operating a 10-kg array of cryogenic germanium detectors in the Soudan Underground Laboratory to search for weakly interacting massive particles, a leading dark matter candidate. These detectors, known as iZIPs, measure ionization and athermal phonons from particle interactions with sensors on both sides of a Ge crystal. The ionization signal can be used to efficiently tag events at high radius and near the top and bottoms surfaces, where diminished charge collection can cause events to mimic WIMP-induced nuclear recoils. Using calibration data taken with a [superscript 206] Pb source underground at Soudan, we demonstrate rejection of surface events of (4.5±0.9)×10[superscript −4] with 46 % acceptance of nuclear recoils using the phonon signal only. We also show with [superscript 133] Ba calibration data underground that the phonon channels can efficiently identify events near the sidewall. This phonon-based approach can also be extended to lower energies than the ionization-based position reconstruction. |
| first_indexed | 2024-09-23T11:50:17Z |
| format | Article |
| id | mit-1721.1/109567 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:50:17Z |
| publishDate | 2017 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/1095672022-10-01T06:23:23Z Phonon-Based Position Determination in SuperCDMS iZIP Detectors Anderson, Adam Anderson, Adam Jonathan Massachusetts Institute of Technology. Department of Physics Anderson, Adam Jonathan SuperCDMS is currently operating a 10-kg array of cryogenic germanium detectors in the Soudan Underground Laboratory to search for weakly interacting massive particles, a leading dark matter candidate. These detectors, known as iZIPs, measure ionization and athermal phonons from particle interactions with sensors on both sides of a Ge crystal. The ionization signal can be used to efficiently tag events at high radius and near the top and bottoms surfaces, where diminished charge collection can cause events to mimic WIMP-induced nuclear recoils. Using calibration data taken with a [superscript 206] Pb source underground at Soudan, we demonstrate rejection of surface events of (4.5±0.9)×10[superscript −4] with 46 % acceptance of nuclear recoils using the phonon signal only. We also show with [superscript 133] Ba calibration data underground that the phonon channels can efficiently identify events near the sidewall. This phonon-based approach can also be extended to lower energies than the ionization-based position reconstruction. United States. Department of Energy. Computational Science Graduate Fellowship Program 2017-06-02T20:07:11Z 2017-06-02T20:07:11Z 2014-01 2016-05-23T12:14:56Z Article http://purl.org/eprint/type/JournalArticle 0022-2291 1573-7357 http://hdl.handle.net/1721.1/109567 Anderson, Adam. “Phonon-Based Position Determination in SuperCDMS iZIP Detectors.” J Low Temp Phys 176, no. 5–6 (January 6, 2014): 959–965. © 2014 Springer Science+Business Media New York https://orcid.org/0000-0002-4435-4623 en http://dx.doi.org/10.1007/s10909-013-1015-2 Journal of Low Temperature Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer Science+Business Media New York application/pdf Springer-Verlag Springer US |
| spellingShingle | Anderson, Adam Anderson, Adam Jonathan Phonon-Based Position Determination in SuperCDMS iZIP Detectors |
| title | Phonon-Based Position Determination in SuperCDMS iZIP Detectors |
| title_full | Phonon-Based Position Determination in SuperCDMS iZIP Detectors |
| title_fullStr | Phonon-Based Position Determination in SuperCDMS iZIP Detectors |
| title_full_unstemmed | Phonon-Based Position Determination in SuperCDMS iZIP Detectors |
| title_short | Phonon-Based Position Determination in SuperCDMS iZIP Detectors |
| title_sort | phonon based position determination in supercdms izip detectors |
| url | http://hdl.handle.net/1721.1/109567 https://orcid.org/0000-0002-4435-4623 |
| work_keys_str_mv | AT andersonadam phononbasedpositiondeterminationinsupercdmsizipdetectors AT andersonadamjonathan phononbasedpositiondeterminationinsupercdmsizipdetectors |