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Characteristics of signals originating near the lithium-diffused N+ contact of high purity germanium p-type point contact detectors

Publication ,  Journal Article
Aguayo, E; Amman, M; Avignone, FT; Barabash, AS; Barton, PJ; Beene, JR; Bertrand, FE; Boswell, M; Brudanin, V; Busch, M; Chan, YD; Collar, JI ...
Published in: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
February 11, 2013

A study of signals originating near the lithium-diffused n+ contact of p-type point contact (PPC) high purity germanium detectors (HPGe) is presented. The transition region between the active germanium and the fully dead layer of the n+ contact is examined. Energy depositions in this transition region are shown to result in partial charge collection. This provides a mechanism for events with a well defined energy to contribute to the continuum of the energy spectrum at lower energies. A novel technique to quantify the contribution from this source of background is introduced. Experiments that operate germanium detectors with a very low energy threshold may benefit from the methods presented herein.

Duke Scholars

Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

February 11, 2013

Volume

701

Start / End Page

176 / 185

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

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Aguayo, E., Amman, M., Avignone, F. T., Barabash, A. S., Barton, P. J., Beene, J. R., … Yumatov, V. (2013). Characteristics of signals originating near the lithium-diffused N+ contact of high purity germanium p-type point contact detectors. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 701, 176–185. https://doi.org/10.1016/j.nima.2012.11.004
Aguayo, E., M. Amman, F. T. Avignone, A. S. Barabash, P. J. Barton, J. R. Beene, F. E. Bertrand, et al. “Characteristics of signals originating near the lithium-diffused N+ contact of high purity germanium p-type point contact detectors.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 701 (February 11, 2013): 176–85. https://doi.org/10.1016/j.nima.2012.11.004.
Aguayo E, Amman M, Avignone FT, Barabash AS, Barton PJ, Beene JR, et al. Characteristics of signals originating near the lithium-diffused N+ contact of high purity germanium p-type point contact detectors. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2013 Feb 11;701:176–85.
Aguayo, E., et al. “Characteristics of signals originating near the lithium-diffused N+ contact of high purity germanium p-type point contact detectors.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 701, Feb. 2013, pp. 176–85. Scopus, doi:10.1016/j.nima.2012.11.004.
Aguayo E, Amman M, Avignone FT, Barabash AS, Barton PJ, Beene JR, Bertrand FE, Boswell M, Brudanin V, Busch M, Chan YD, Christofferson CD, Collar JI, Combs DC, Cooper RJ, Detwiler JA, Doe PJ, Efremenko Y, Egorov V, Ejiri H, Elliott SR, Esterline J, Fast JE, Fields N, Finnerty P, Fraenkle FM, Galindo-Uribarri A, Gehman VM, Giovanetti GK, Green MP, Guiseppe VE, Gusey K, Hallin AL, Hazama R, Henning R, Hoppe EW, Horton M, Howard S, Howe MA, Johnson RA, Keeter KJ, Kidd MF, Knecht A, Kochetov O, Konovalov SI, Kouzes RT, LaFerriere BD, Leon J, Leviner LE, Loach JC, Looker Q, Luke PN, MacMullin S, Marino MG, Martin RD, Merriman JH, Miller ML, Mizouni L, Nomachi M, Orrell JL, Overman NR, Perumpilly G, Phillips DG, Poon AWP, Radford DC, Rielage K, Robertson RGH, Ronquest MC, Schubert AG, Shima T, Shirchenko M, Snavely KJ, Steele D, Strain J, Timkin V, Tornow W, Varner RL, Vetter K, Vorren K, Wilkerson JF, Yakushev E, Yaver H, Young AR, Yu CH, Yumatov V. Characteristics of signals originating near the lithium-diffused N+ contact of high purity germanium p-type point contact detectors. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2013 Feb 11;701:176–185.
Journal cover image

Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

February 11, 2013

Volume

701

Start / End Page

176 / 185

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences