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Demonstration of surface electron rejection with interleaved germanium detectors for dark matter searches

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Demonstration of surface electron rejection with interleaved germanium detectors for dark matter searches

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Title: Demonstration of surface electron rejection with interleaved germanium detectors for dark matter searches
Author: Agnése, R.; Anderson, Adam J.; Balakishiyeva, Durdana N.; Basu Thakur, R.; Bauer, Daniel A.; Borgland, AW W.; Brandt, Daniel E.; Brink, Paul L.; Bunker, Robert L.; Cabrera, Blas; Całdwell, David O.; Cerdeño, David G.; Chagani, Hassan; Cherry, Matthew R.; Cooley, Jodi A.; Cornell, Bradford; Crewdson, Chase H.; Cushman, Priscilla B.; Daal, Miguel; Di Stéfano, Philippe C F; Do Couto E Silva, Eduardo; Doughty, T.; Esteban, L.; Fallows, S.; Figueroa-Feliciano, Enectalí; Fox, Jake R.; Fritts, M. C.; Godfrey, Gary L.; Golwala, Sunil R.; Hall, Jeter C.; Harris, Harlan Rusty; Hasi, Jasmine; Hertel, Scott A.; Hines, Bruce A.; Hofer, T.; Holmgren, Donald J.; Hsu, L.; Huber, Martin E.; Jastram, A.; Kamaev, Oleg; Kara, B.; Kelsey, Michael H.; Kenany, S. A.; Kennedy, A.; Kenney, Christopher J.; Kiveni, M.; Koch, Katrin; Loer, Ben; Lopez Asamar, E.; Mahapatra, Rupak; Mandic, Vuk; Martínez, César; McCarthy, Kevin A.; Mirabolfathi, N.; Moffatt, R. A.; Moore, David C.; Nadeau, P.; Nelson, Robert H.; Novák, Libor; Page, Katharine; Partridge, Richard A.; Pépin, Marc P.; Phipps, Alex T J; Prasad, Karthik Ganeshwar; Pyle, M. C.; Qiu, H.; Radpour, R.; Rau, Wolfgang; Redl, Peter; Reisetter, A.; Resch, R. W.; Ricci, Y.; Saab, Tarek; Sadoulet, Bernard; Sander, Jonathan S.; Schmitt, Richard L.; Schneck, K.; Schnee, Richard W.; Scorza, Silvia; Seitz, Dennis N.; Serfass, Bruno; Shank, B.; Speller, D.; Tomada, Astrid; Villano, A. N.; Welliver, B.; Wright, Dennis H.; Yellin, Steven J.; Yen, Jeffrey J.; Young, Betty; Zhang, J.
Entity: UAM. Departamento de Física Teórica
Publisher: American Institute of Physics
Date: 2013-10-14
Citation: Applied Physics Letters 103.16 (2013): 164105
ISSN: 0003-6951 (print); 1077-3118 (online)
DOI: 10.1063/1.4826093
Funded by: This work is supported in part by the National Science Foundation (Grant Nos. AST-9978911, NSF-0847342, PHY-1102795,NSF-1151869, PHY-0542066, PHY-0503729, PHY-0503629, PHY-0503641, PHY-0504224, PHY-0705052,PHY-0801708, PHY-0801712, PHY-0802575, PHY-0847342, PHY-0855299, PHY-0855525, and PHY-1205898), by the Department of Energy (Contract Nos. DE-AC03-76SF00098, DE-FG02-92ER40701, DE-FG02-94ER40823,DE-FG03-90ER40569, DE-FG03-91ER40618, and DESC0004022),by NSERC Canada (Grant Nos. SAPIN 341314 and SAPPJ 386399), and by MULTIDARK CSD2009-00064 and FPA2012-34694. Fermilab is operated by Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359, while SLAC is operated under Contract No. DE-AC02-76SF00515 with the United States Department of Energy.
Editor's Version: http://dx.doi.org/10.1063/1.4826093
Subjects: Ionization; Lead; Germanium; Surface ionization; Electrodes; Física
URI: http://hdl.handle.net/10486/662226
Note: The following article appeared in Applied Physics Letters 103.16 (2013): 164105 and may be found at http://scitation.aip.org/content/aip/journal/apl/100/26/10.1063/1.4729825
Rights: © 2013 AIP Publishing LLC.

Abstract:

The SuperCDMS experiment in the Soudan Underground Laboratory searches for dark matter with a 9-kg array of cryogenic germanium detectors. Symmetric sensors on opposite sides measure both charge and phonons from each particle interaction, providing excellent discrimination between electron and nuclear recoils, and between surface and interior events. Surface event rejection capabilities were tested with two 210 Pb sources producing ∼130 beta decays/hr. In ∼800 live hours, no events leaked into the 8–115 keV signal region, giving upper limit leakage fraction 1.7 × 10−5 at 90% C.L., corresponding to < 0.6 surface event background in the future 200-kg SuperCDMS SNOLAB experiment.

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G o o g l e ™ Scholar: Agnése, R. - Anderson, Adam J. - Balakishiyeva, Durdana N. - Basu Thakur, R. - Bauer, Daniel A. - Borgland, AW W. - Brandt, Daniel E. - Brink, Paul L. - Bunker, Robert L. - Cabrera, Blas - Całdwell, David O. - Cerdeño, David G. - Chagani, Hassan - Cherry, Matthew R. - Cooley, Jodi A. - Cornell, Bradford - Crewdson, Chase H. - Cushman, Priscilla B. - Daal, Miguel - Di Stéfano, Philippe C F - Do Couto E Silva, Eduardo - Doughty, T. - Esteban, L. - Fallows, S. - Figueroa-Feliciano, Enectalí - Fox, Jake R. - Fritts, M. C. - Godfrey, Gary L. - Golwala, Sunil R. - Hall, Jeter C. - Harris, Harlan Rusty - Hasi, Jasmine - Hertel, Scott A. - Hines, Bruce A. - Hofer, T. - Holmgren, Donald J. - Hsu, L. - Huber, Martin E. - Jastram, A. - Kamaev, Oleg - Kara, B. - Kelsey, Michael H. - Kenany, S. A. - Kennedy, A. - Kenney, Christopher J. - Kiveni, M. - Koch, Katrin - Loer, Ben - Lopez Asamar, E. - Mahapatra, Rupak - Mandic, Vuk - Martínez, César - McCarthy, Kevin A. - Mirabolfathi, N. - Moffatt, R. A. - Moore, David C. - Nadeau, P. - Nelson, Robert H. - Novák, Libor - Page, Katharine - Partridge, Richard A. - Pépin, Marc P. - Phipps, Alex T J - Prasad, Karthik Ganeshwar - Pyle, M. C. - Qiu, H. - Radpour, R. - Rau, Wolfgang - Redl, Peter - Reisetter, A. - Resch, R. W. - Ricci, Y. - Saab, Tarek - Sadoulet, Bernard - Sander, Jonathan S. - Schmitt, Richard L. - Schneck, K. - Schnee, Richard W. - Scorza, Silvia - Seitz, Dennis N. - Serfass, Bruno - Shank, B. - Speller, D. - Tomada, Astrid - Villano, A. N. - Welliver, B. - Wright, Dennis H. - Yellin, Steven J. - Yen, Jeffrey J. - Young, Betty - Zhang, J.

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