Low Background Signal Readout Electronics for the Majorana Demonstrator

2nd Workshop on Germanium Detectors and Technologies

Guinn, I.^1 ; Abgrall, N.^2 ; Avignone, F.T.^3,4 ; Barabash, A.S.^5 ; Bertrand, F.E.^4 ; Brudanin, V.^6 ; Busch, M.^7,8 ; Buuck, M.^1 ; Byram, D.^9 ; Caldwell, A.S.^10 ; Chan, Y.-D.^2 ; Christofferson, C.D.^10 ; Cuesta, C.^1 ; Detwiler, J.A.^1 ; Efremenko, Yu^11 ; Ejiri, H.^12 ; Elliott, S.R.^13 ; Galindo-Uribarri, A.^4 ; Giovanetti, G.K.^8,14 ; Goett, J.^13 ; Green, M.P.^4 ; Gruszko, J.^1 ; Guiseppe, V.E.^3 ; Henning, R.^8,14 ; Hoppe, E.W.^15 ; Howard, S.^10 ; Howe, M.A.^8,14 ; Jasinski, B.R.^9 ; Keeter, K.J.^16 ; Kidd, M.F.^17 ; Konovalov, S.I.^5 ; Kouzes, R.T.^15 ; Laferriere, B.D.^15 ; Leon, J.^1 ; Macmullin, J.^8,14 ; Martin, R.D.^9 ; Meijer, S.J.^8,14 ; Mertens, S.^2 ; Orrell, J.L.^15 ; O'Shaughnessy, C.^8,14 ; Overman, N.R.^15 ; Poon, A.W.P.^2 ; Radford, D.C.^4 ; Rager, J.^8,14 ; Rielage, K.^13 ; Robertson, R.G.H.^1 ; Romero-Romero, E.^4,11 ; Ronquest, M.C.^13 ; Shanks, B.^8,14 ; Shirchenko, M.^6 ; Snyder, N.^9 ; Suriano, A.M.^10 ; Tedeschi, D.^3 ; Trimble, J.E.^8,14 ; Varner, R.L.^4 ; Vasilyev, S.^6 ; Vetter, K.^2,18 ; Vorren, K.^8,14 ; White, B.R.^4 ; Wilkerson, J.F.^4,8,14 ; Wiseman, C.^3 ; Xu, W.^13 ; Yakushev, E.^6 ; Yu, C.-H.^4 ; Yumatov, V.^5

Center for Experimental Nuclear Physics and Astrophysics, Department of Physics, University of Washington, Seattle

WA, United States^1

Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley

CA, United States^2

Department of Physics and Astronomy, University of South Carolina, Columbia

SC, United States^3

Oak Ridge National Laboratory, Oak Ridge

TN, United States^4

Institute for Theoretical and Experimental Physics, Moscow, Russia^5

Joint Institute for Nuclear Research, Dubna, Russia^6

Department of Physics, Duke University, Durham

NC, United States^7

Triangle Universities Nuclear Laboratory, Durham

NC, United States^8

Department of Physics, University of South Dakota, Vermillion

SD, United States

(10) South Dakota School of Mines and Technology, Rapid City

SD, United States

(11) Department of Physics and Astronomy, University of Tennessee, Knoxville

TN, United States

(12) Research Center for Nuclear Physics, Department of Physics, Osaka University, Ibaraki, Osaka, Japan

(13) Los Alamos National Laboratory, Los Alamos

NM, United States

(14) Department of Physics and Astronomy, University of North Carolina, Chapel Hill

NC, United States

(15) Pacific Northwest National Laboratory, Richland

WA, United States

(16) Department of Physics, Black Hills State University, Spearfish

SD, United States

(17) Tennessee Tech University, Cookeville

TN, United States

(18) Department of Nuclear Engineering, University of California, Berkeley

CA, United States^9

关键词: Close proximity;    Germanium detector;    Low background;    Low noise;    Majorana;    Neutrinoless double-beta decays;    Q-values;    Region of interest;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/606/1/012009/pdf
DOI  :  10.1088/1742-6596/606/1/012009

来源: IOP

【 摘 要 】

The Majorana Demonstrator is a planned 40 kg array of Germanium detectors intended to demonstrate the feasibility of constructing a tonne-scale experiment that will seek neutrinoless double beta decay (0νββ) in76Ge. Such an experiment would require backgrounds of less than 1 count/tonne-year in the 4 keV region of interest around the 2039 keV Q-value of the ββ decay. Designing low-noise electronics, which must be placed in close proximity to the detectors, presents a challenge to reaching this background target. This paper will discuss the Majorana collaboration's solutions to some of these challenges.