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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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Google™ 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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