Contamination control and assay results for the Majorana Demonstrator ultra clean components

C. D. Christofferson; N. Abgrall; S. I. Alvis; I. J. Arnquist; F. T. Avignone; A. S. Barabash; C. J. Barton; F. E. Bertrand; T. Bode; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; T. S. Caldwell; Y. D. Chan; P. H. Chu; C. Cuesta; J. A. Detwiler; C. Dunagan; Yu Efremenko; H. Ejiri; S. R. Elliott; T. Gilliss; G. K. Giovanetti; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; C. R. Haufe; L. Hehn; R. Henning; E. W. Hoppe; M. A. Howe; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; A. M. Lopez; R. D. Martin; R. Massarczyk; S. J. Meijer; S. Mertens; J. Myslik; C. O'Shaughnessy; G. Othman; A. W.P. Poon; D. C. Radford; J. Rager; A. L. Reine; K. Rielage; R. G.H. Robertson; N. W. Rouf; B. Shanks; M. Shirchenko; A. M. Suriano; D. Tedeschi; J. E. Trimble; R. L. Varner; S. Vasilyev; K. Vetter; K. Vorren; B. R. White; J. F. Wilkerson; C. Wiseman; W. Xu; E. Yakushev; C. H. Yu; V. Yumatov; I. Zhitnikov; B. X. Zhu

doi:10.1063/1.5019001

Contamination control and assay results for the Majorana Demonstrator ultra clean components

C. D. Christofferson, N. Abgrall, S. I. Alvis, I. J. Arnquist, F. T. Avignone, A. S. Barabash, C. J. Barton, F. E. Bertrand, T. Bode, A. W. Bradley, V. Brudanin, M. Busch, M. Buuck, T. S. Caldwell, Y. D. Chan, P. H. Chu, C. Cuesta, J. A. Detwiler, C. Dunagan, Yu EfremenkoH. Ejiri, S. R. Elliott, T. Gilliss, G. K. Giovanetti, M. P. Green, J. Gruszko, I. S. Guinn, V. E. Guiseppe, C. R. Haufe, L. Hehn, R. Henning, E. W. Hoppe, M. A. Howe, K. J. Keeter, M. F. Kidd, S. I. Konovalov, R. T. Kouzes, A. M. Lopez, R. D. Martin, R. Massarczyk, S. J. Meijer, S. Mertens, J. Myslik, C. O'Shaughnessy, G. Othman, A. W.P. Poon, D. C. Radford, J. Rager, A. L. Reine, K. Rielage, R. G.H. Robertson, N. W. Rouf, B. Shanks, M. Shirchenko, A. M. Suriano, D. Tedeschi, J. E. Trimble, R. L. Varner, S. Vasilyev, K. Vetter, K. Vorren, B. R. White, J. F. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, C. H. Yu, V. Yumatov, I. Zhitnikov, B. X. Zhu

Neutrino Research

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

The Majorana Demonstrator is a neutrinoless double beta decay experiment utilizing enriched Ge-76 detectors in 2 separate modules inside of a common solid shield at the Sanford Underground Research Facility. The Demonstrator has utilized world leading assay sensitivities to develop clean materials and processes for producing ultra-pure copper and plastic components. This experiment is now operating, and initial data provide new insights into the success of cleaning and processing. Post production copper assays after the completion of Module 1 showed an increase in U and Th contamination in finished parts compared to starting bulk material. A revised cleaning method and additional round of surface contamination studies prior to Module 2 construction have provided evidence that more rigorous process control can reduce surface contamination. This article describes the assay results and discuss further studies to take advantage of assay capabilities for the purpose of maintaining ultra clean fabrication and process design.

Original language	English
Title of host publication	Low Radioactivity Techniques 2017, LRT 2017
Subtitle of host publication	Proceedings of the 6th International Workshop on Low Radioactivity Techniques
Editors	Douglas S. Leonard
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735416130
DOIs	https://doi.org/10.1063/1.5019001
State	Published - Jan 3 2018
Event	6th International Workshop on Low Radioactivity Techniques, LRT 2017 - Seoul, Korea, Republic of Duration: May 23 2017 → May 27 2017

Publication series

Name	AIP Conference Proceedings
Volume	1921
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	6th International Workshop on Low Radioactivity Techniques, LRT 2017
Country/Territory	Korea, Republic of
City	Seoul
Period	05/23/17 → 05/27/17

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, the Particle Astrophysics and Nuclear Physics Programs of the National Science Foundation, and the Sanford Underground Research Facility.

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10.1063/1.5019001

Cite this

Christofferson, C. D., Abgrall, N., Alvis, S. I., Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Bertrand, F. E., Bode, T., Bradley, A. W., Brudanin, V., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y. D., Chu, P. H., Cuesta, C., Detwiler, J. A., Dunagan, C., ... Zhu, B. X. (2018). Contamination control and assay results for the Majorana Demonstrator ultra clean components. In D. S. Leonard (Ed.), Low Radioactivity Techniques 2017, LRT 2017: Proceedings of the 6th International Workshop on Low Radioactivity Techniques Article 060005 (AIP Conference Proceedings; Vol. 1921). American Institute of Physics Inc.. https://doi.org/10.1063/1.5019001

Christofferson, C. D. ; Abgrall, N. ; Alvis, S. I. et al. / Contamination control and assay results for the Majorana Demonstrator ultra clean components. Low Radioactivity Techniques 2017, LRT 2017: Proceedings of the 6th International Workshop on Low Radioactivity Techniques. editor / Douglas S. Leonard. American Institute of Physics Inc., 2018. (AIP Conference Proceedings).

@inproceedings{3989546d76c74af8952d9c0d4ec53cb5,

title = "Contamination control and assay results for the Majorana Demonstrator ultra clean components",

abstract = "The Majorana Demonstrator is a neutrinoless double beta decay experiment utilizing enriched Ge-76 detectors in 2 separate modules inside of a common solid shield at the Sanford Underground Research Facility. The Demonstrator has utilized world leading assay sensitivities to develop clean materials and processes for producing ultra-pure copper and plastic components. This experiment is now operating, and initial data provide new insights into the success of cleaning and processing. Post production copper assays after the completion of Module 1 showed an increase in U and Th contamination in finished parts compared to starting bulk material. A revised cleaning method and additional round of surface contamination studies prior to Module 2 construction have provided evidence that more rigorous process control can reduce surface contamination. This article describes the assay results and discuss further studies to take advantage of assay capabilities for the purpose of maintaining ultra clean fabrication and process design.",

author = "Christofferson, {C. D.} and N. Abgrall and Alvis, {S. I.} and Arnquist, {I. J.} and Avignone, {F. T.} and Barabash, {A. S.} and Barton, {C. J.} and Bertrand, {F. E.} and T. Bode and Bradley, {A. W.} and V. Brudanin and M. Busch and M. Buuck and Caldwell, {T. S.} and Chan, {Y. D.} and Chu, {P. H.} and C. Cuesta and Detwiler, {J. A.} and C. Dunagan and Yu Efremenko and H. Ejiri and Elliott, {S. R.} and T. Gilliss and Giovanetti, {G. K.} and Green, {M. P.} and J. Gruszko and Guinn, {I. S.} and Guiseppe, {V. E.} and Haufe, {C. R.} and L. Hehn and R. Henning and Hoppe, {E. W.} and Howe, {M. A.} and Keeter, {K. J.} and Kidd, {M. F.} and Konovalov, {S. I.} and Kouzes, {R. T.} and Lopez, {A. M.} and Martin, {R. D.} and R. Massarczyk and Meijer, {S. J.} and S. Mertens and J. Myslik and C. O'Shaughnessy and G. Othman and Poon, {A. W.P.} and Radford, {D. C.} and J. Rager and Reine, {A. L.} and K. Rielage and Robertson, {R. G.H.} and Rouf, {N. W.} and B. Shanks and M. Shirchenko and Suriano, {A. M.} and D. Tedeschi and Trimble, {J. E.} and Varner, {R. L.} and S. Vasilyev and K. Vetter and K. Vorren and White, {B. R.} and Wilkerson, {J. F.} and C. Wiseman and W. Xu and E. Yakushev and Yu, {C. H.} and V. Yumatov and I. Zhitnikov and Zhu, {B. X.}",

note = "Publisher Copyright: {\textcopyright} 2018 Author(s).; 6th International Workshop on Low Radioactivity Techniques, LRT 2017 ; Conference date: 23-05-2017 Through 27-05-2017",

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series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

editor = "Leonard, {Douglas S.}",

booktitle = "Low Radioactivity Techniques 2017, LRT 2017",

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Christofferson, CD, Abgrall, N, Alvis, SI, Arnquist, IJ, Avignone, FT, Barabash, AS, Barton, CJ, Bertrand, FE, Bode, T, Bradley, AW, Brudanin, V, Busch, M, Buuck, M, Caldwell, TS, Chan, YD, Chu, PH, Cuesta, C, Detwiler, JA, Dunagan, C, Efremenko, Y, Ejiri, H, Elliott, SR, Gilliss, T, Giovanetti, GK, Green, MP, Gruszko, J, Guinn, IS, Guiseppe, VE, Haufe, CR, Hehn, L, Henning, R, Hoppe, EW, Howe, MA, Keeter, KJ, Kidd, MF, Konovalov, SI, Kouzes, RT, Lopez, AM, Martin, RD, Massarczyk, R, Meijer, SJ, Mertens, S, Myslik, J, O'Shaughnessy, C, Othman, G, Poon, AWP, Radford, DC, Rager, J, Reine, AL, Rielage, K, Robertson, RGH, Rouf, NW, Shanks, B, Shirchenko, M, Suriano, AM, Tedeschi, D, Trimble, JE, Varner, RL, Vasilyev, S, Vetter, K, Vorren, K, White, BR, Wilkerson, JF, Wiseman, C, Xu, W, Yakushev, E, Yu, CH, Yumatov, V, Zhitnikov, I & Zhu, BX 2018, Contamination control and assay results for the Majorana Demonstrator ultra clean components. in DS Leonard (ed.), Low Radioactivity Techniques 2017, LRT 2017: Proceedings of the 6th International Workshop on Low Radioactivity Techniques., 060005, AIP Conference Proceedings, vol. 1921, American Institute of Physics Inc., 6th International Workshop on Low Radioactivity Techniques, LRT 2017, Seoul, Korea, Republic of, 05/23/17. https://doi.org/10.1063/1.5019001

Contamination control and assay results for the Majorana Demonstrator ultra clean components. / Christofferson, C. D.; Abgrall, N.; Alvis, S. I. et al.
Low Radioactivity Techniques 2017, LRT 2017: Proceedings of the 6th International Workshop on Low Radioactivity Techniques. ed. / Douglas S. Leonard. American Institute of Physics Inc., 2018. 060005 (AIP Conference Proceedings; Vol. 1921).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Contamination control and assay results for the Majorana Demonstrator ultra clean components

AU - Christofferson, C. D.

AU - Abgrall, N.

AU - Alvis, S. I.

AU - Arnquist, I. J.

AU - Avignone, F. T.

AU - Barabash, A. S.

AU - Barton, C. J.

AU - Bertrand, F. E.

AU - Bode, T.

AU - Bradley, A. W.

AU - Brudanin, V.

AU - Busch, M.

AU - Buuck, M.

AU - Caldwell, T. S.

AU - Chan, Y. D.

AU - Chu, P. H.

AU - Cuesta, C.

AU - Detwiler, J. A.

AU - Dunagan, C.

AU - Efremenko, Yu

AU - Ejiri, H.

AU - Elliott, S. R.

AU - Gilliss, T.

AU - Giovanetti, G. K.

AU - Green, M. P.

AU - Gruszko, J.

AU - Guinn, I. S.

AU - Guiseppe, V. E.

AU - Haufe, C. R.

AU - Hehn, L.

AU - Henning, R.

AU - Hoppe, E. W.

AU - Howe, M. A.

AU - Keeter, K. J.

AU - Kidd, M. F.

AU - Konovalov, S. I.

AU - Kouzes, R. T.

AU - Lopez, A. M.

AU - Martin, R. D.

AU - Massarczyk, R.

AU - Meijer, S. J.

AU - Mertens, S.

AU - Myslik, J.

AU - O'Shaughnessy, C.

AU - Othman, G.

AU - Poon, A. W.P.

AU - Radford, D. C.

AU - Rager, J.

AU - Reine, A. L.

AU - Rielage, K.

AU - Robertson, R. G.H.

AU - Rouf, N. W.

AU - Shanks, B.

AU - Shirchenko, M.

AU - Suriano, A. M.

AU - Tedeschi, D.

AU - Trimble, J. E.

AU - Varner, R. L.

AU - Vasilyev, S.

AU - Vetter, K.

AU - Vorren, K.

AU - White, B. R.

AU - Wilkerson, J. F.

AU - Wiseman, C.

AU - Xu, W.

AU - Yakushev, E.

AU - Yu, C. H.

AU - Yumatov, V.

AU - Zhitnikov, I.

AU - Zhu, B. X.

PY - 2018/1/3

Y1 - 2018/1/3

N2 - The Majorana Demonstrator is a neutrinoless double beta decay experiment utilizing enriched Ge-76 detectors in 2 separate modules inside of a common solid shield at the Sanford Underground Research Facility. The Demonstrator has utilized world leading assay sensitivities to develop clean materials and processes for producing ultra-pure copper and plastic components. This experiment is now operating, and initial data provide new insights into the success of cleaning and processing. Post production copper assays after the completion of Module 1 showed an increase in U and Th contamination in finished parts compared to starting bulk material. A revised cleaning method and additional round of surface contamination studies prior to Module 2 construction have provided evidence that more rigorous process control can reduce surface contamination. This article describes the assay results and discuss further studies to take advantage of assay capabilities for the purpose of maintaining ultra clean fabrication and process design.

AB - The Majorana Demonstrator is a neutrinoless double beta decay experiment utilizing enriched Ge-76 detectors in 2 separate modules inside of a common solid shield at the Sanford Underground Research Facility. The Demonstrator has utilized world leading assay sensitivities to develop clean materials and processes for producing ultra-pure copper and plastic components. This experiment is now operating, and initial data provide new insights into the success of cleaning and processing. Post production copper assays after the completion of Module 1 showed an increase in U and Th contamination in finished parts compared to starting bulk material. A revised cleaning method and additional round of surface contamination studies prior to Module 2 construction have provided evidence that more rigorous process control can reduce surface contamination. This article describes the assay results and discuss further studies to take advantage of assay capabilities for the purpose of maintaining ultra clean fabrication and process design.

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U2 - 10.1063/1.5019001

DO - 10.1063/1.5019001

M3 - Conference contribution

AN - SCOPUS:85040529013

T3 - AIP Conference Proceedings

BT - Low Radioactivity Techniques 2017, LRT 2017

A2 - Leonard, Douglas S.

PB - American Institute of Physics Inc.

T2 - 6th International Workshop on Low Radioactivity Techniques, LRT 2017

Y2 - 23 May 2017 through 27 May 2017

ER -

Christofferson CD, Abgrall N, Alvis SI, Arnquist IJ, Avignone FT, Barabash AS et al. Contamination control and assay results for the Majorana Demonstrator ultra clean components. In Leonard DS, editor, Low Radioactivity Techniques 2017, LRT 2017: Proceedings of the 6th International Workshop on Low Radioactivity Techniques. American Institute of Physics Inc. 2018. 060005. (AIP Conference Proceedings). doi: 10.1063/1.5019001

Contamination control and assay results for the Majorana Demonstrator ultra clean components

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