Production Rate Measurement of Tritium and Other Cosmogenic Isotopes in Germanium with CDMSlite
Creators: name: SuperCDMS Collaboration
name: Agnese, R.
name: Aralis, T.
name: Aramaki, T.
name: Arnquist, I. J.
name: Azadbakht, E.
name: Baker, W.
name: Barker, D.
name: Bauer, D. A.
name: Binder, T.
name: Bowles, M. A.
name: Brink, P. L.
name: Bunker, R.
name: Cabrera, B.
name: Calkins, R.
name: Cartaro, C.
name: Cerdeño, D. G.
name: Chang, Y. -Y.
name: Cooley, J.
name: Cornell, B.
name: Cushman, P.
name: Doughty, T.
name: Fascione, E.
name: Figueroa-Feliciano, E.
name: Fink, C. W.
name: Fritts, M.
name: Gerbier, G.
name: Germond, R.
name: Ghaith, M.
name: Golwal, S. R.
name: Harris, H. R.
name: Hong, Z.
name: Hoppe, E. W.
name: Hsu, L.
name: Huber, M. E.
name: Iyer, V.
name: Jardin, D.
name: Jastram, A.
name: Jena, C.
name: Kelsey, M. H.
name: Kennedy, A.
name: Kubik, A.
name: Kurinsky, N. A.
name: Lawrence, R. E.
name: Loer, B.
name: Asamar, E. Lopez
name: Lukens, P.
name: MacDonell, D.
name: Mahapatra, R.
name: Mandic, V.
name: Mast, N.
name: Miller, E.
name: Mirabolfathi, N.
name: Mohanty, B.
name: Mendoza, J. D. Morales
name: Nelson, J.
name: Orrell, J. L.
name: Oser, S. M.
name: Page, W. A.
name: Partridge, R.
name: Pepin, M.
name: Ponce, F.
name: Poudel, S.
name: Pyle, M.
name: Qiu, H.
name: Rau, W.
name: Reisetter, A.
name: Ren, R.
name: Reynolds, T.
name: Roberts, A.
name: Robinson, A. E.
name: Rogers, H. E.
name: Saab, T.
name: Sadoulet, B.
name: Banik, S.
name: Sander, J.
name: Scarff, A.
name: Schnee, R. W.
name: Scorza, S.
name: Senapati, K.
name: Serfass, B.
name: Speller, D.
name: Stein, M.
name: Street, J.
name: Tanaka, H. A.
name: Toback, D.
name: Underwood, R.
name: Villano, A. N.
name: von Krosigk, B.
name: Watkins, S. L.
name: Wilson, J. S.
name: Wilson, M. J.
name: Winchell, J.
name: Wright, D. H.
name: Yellin, S.
name: Young, B. A.
name: Zhang, X.
name: Zhao, X.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Future direct searches for low-mass dark matter particles with germanium detectors, such as SuperCDMS SNOLAB, are expected to be limited by backgrounds from radioactive isotopes activated by cosmogenic radiation inside the germanium. There are limited experimental data available to constrain production rates and a large spread of theoretical predictions. We examine the calculation of expected production rates, and analyze data from the second run of the CDMS low ionization threshold experiment (CDMSlite) to estimate the rates for several isotopes. We model the measured CDMSlite spectrum and fit for contributions from tritium and other isotopes. Using the knowledge of the detector history, these results are converted to cosmogenic production rates at sea level. The production rates in atoms/(kg$\cdot$day) are 74$\pm$9 for $^3$H, 1.5$\pm$0.7 for $^{55}$Fe, 17$\pm$5 for $^{65}$Zn, and 30$\pm$18 for $^{68}$Ge.
description: 14 pages, 10 figures, 5 tables. v5 contains the extended data release (and documentation) of the CDMSlite Run 2 data as ancillary files