MAJORANA Collaboration's Experience with Germanium Detectors

2nd Workshop on Germanium Detectors and Technologies

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

Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley

CA, United States^1

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

SC, United States^2

Oak Ridge National Laboratory, Oak Ridge

TN, United States^3

Institute for Theoretical and Experimental Physics, Moscow, Russia^4

Joint Institute for Nuclear Research, Dubna, Russia^5

Department of Physics, Duke University, Durham

NC, United States^6

Triangle Universities Nuclear Laboratory, Durham

NC, United States^7

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

WA, 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: Contact geometry;    Energy resolutions;    Germanium detector;    High purity germaniums;    Majorana;    Mounting structure;    P-type;    Pulse shape discrimination;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/606/1/012005/pdf
DOI  :  10.1088/1742-6596/606/1/012005

来源: IOP

【 摘 要 】

The goal of the Majorana Demonstrator project is to search for 0νββ decay in76Ge. Of all candidate isotopes for 0νββ,76Ge has some of the most favorable characteristics. Germanium detectors are a well established technology, and in searches for 0νββ, the high purity germanium crystal acts simultaneously as source and detector. Furthermore, p-type germanium detectors provide excellent energy resolution and a specially designed point contact geometry allows for sensitive pulse shape discrimination. This paper will summarize the experiences the MAJORANA collaboration made with enriched germanium detectors manufactured by ORTEC®. The process from production, to characterization and integration in MAJORANA mounting structure will be described. A summary of the performance of all enriched germanium detectors will be given.