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36 results on '"Guiseppe, V.E."'

1. The processing of enriched germanium for the Majorana Demonstrator and R&D for a next generation double-beta decay experiment

Author

Abgrall, N., Arnquist, I.J., Avignone III, F.T., Barabash, A.S., Bertrand, F.E., Bradley, A.W., Brudanin, V., Busch, M., Buuck, M., Caja, J., Caja, M., Caldwell, T.S., Christofferson, C.D., Chu, P.-H., Cuesta, C., Detwiler, J.A., Dunagan, C., Dunstan, D.T., Efremenko, Yu., Ejiri, H., Elliott, S.R., Gilliss, T., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guinn, I.S., Guiseppe, V.E., Haufe, C.R.S., Henning, R., Hoppe, E.W., Jasinski, B.R., Kidd, M.F., Konovalov, S.I., Kouzes, R.T., Lopez, A.M., MacMullin, J., Martin, R.D., Massarczyk, R., Meijer, S.J., Mertens, S., Meyer, J.H., Myslik, J., O’Shaughnessy, C., Poon, A.W.P., Radford, D.C., Rager, J., Reine, A.L., Reising, J.A., Rielage, K., Robertson, R.G.H., Shanks, B., Shirchenko, M., Suriano, A.M., Tedeschi, D., Toth, L.M., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Yu, C.-H., Yumatov, V., Zhitnikov, I., and Zhu, B.X.

Published
2018
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2. The Majorana Demonstrator calibration system

Author

Abgrall, N., Arnquist, I.J., Avignone III, F.T., Barabash, A.S., Bertrand, F.E., Boswell, M., Bradley, A.W., Brudanin, V., Busch, M., Buuck, M., Caldwell, T.S., Christofferson, C.D., Chu, P.-H., Cuesta, C., Detwiler, J.A., Dunagan, C., Efremenko, Yu., Ejiri, H., Elliott, S.R., Fu, Z., Gehman, V.M., Gilliss, T., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guinn, I.S., Guiseppe, V.E., Haufe, C.R., Henning, R., Hoppe, E.W., Howe, M.A., Jasinski, B.R., Keeter, K.J., Kidd, M.F., Konovalov, S.I., Kouzes, R.T., Lopez, A.M., MacMullin, J., Martin, R.D., Massarczyk, R., Meijer, S.J., Mertens, S., Orrell, J.L., O’Shaughnessy, C., Poon, A.W.P., Radford, D.C., Rager, J., Reine, A.L., Rielage, K., Robertson, R.G.H., Shanks, B., Shirchenko, M., Suriano, A.M., Tedeschi, D., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yu, C.-H., Yumatov, V., Zhitnikov, I., and Zhu, B.X.

Published
2017
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3. Muon flux measurements at the davis campus of the sanford underground research facility with the majorana demonstrator veto system

Author

Abgrall, N., Aguayo, E., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Bradley, A.W., Brudanin, V., Busch, M., Buuck, M., Byram, D., Caldwell, A.S., Chan, Y-D., Christofferson, C.D., Chu, P.-H., Cuesta, C., Detwiler, J.A., Dunagan, C., Efremenko, Yu., Ejiri, H., Elliott, S.R., Galindo-Uribarri, A., Gilliss, T., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guinn, I.S., Guiseppe, V.E., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Jasinski, B.R., Keeter, K.J., Kidd, M.F., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Lopez, A.M., MacMullin, J., Martin, R.D., Massarczyk, R., Meijer, S.J., Mertens, S., Orrell, J.L., O’Shaughnessy, C., Overman, N.R., Poon, A.W.P., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Schmitt, C., Shanks, B., Shirchenko, M., Snyder, N., Suriano, A.M., Tedeschi, D., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Yu, C.-H., Yumatov, V., and Zhitnikov, I.

Published
2017
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4. The Majorana Demonstrator radioassay program

Author

Abgrall, N., Arnquist, I.J., Avignone, F.T., III, Back, H.O., Barabash, A.S., Bertrand, F.E., Boswell, M., Bradley, A.W., Brudanin, V., Busch, M., Buuck, M., Byram, D., Caldwell, A.S., Chan, Y.-D., Christofferson, C.D., Chu, P.-H., Cuesta, C., Detwiler, J.A., Dunmore, J.A., Efremenko, Yu., Ejiri, H., Elliott, S.R., Finnerty, P., Galindo-Uribarri, A., Gehman, V.M., Gilliss, T., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guinn, I.S., Guiseppe, V.E., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Jasinski, B.R., Johnson, R.A., Keeter, K.J., Kidd, M.F., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Loach, J.C., MacMullin, J., MacMullin, S., Martin, R.D., Massarczyk, R., Meijer, S., Mertens, S., Miller, M.L., Orrell, J.L., O'Shaughnessy, C., Overman, N.R., Poon, A.W.P., Pushkin, K., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Schubert, A.G., Shanks, B., Shirchenko, M., Snavely, K.J., Snyder, N., Steele, D., Suriano, A.M., Tedeschi, D., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Yu, C.-H., Yumatov, V., and Zhitnikov, I.

Published
2016
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5. Status of the Majorana Demonstrator

Author

Cuesta, C., Abgrall, N., Arnquist, I.J., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Brudanin, V., Busch, M., Buuck, M., Byram, D., Caldwell, A.S., Chan, Y.-D., Christofferson, C.D., Detwiler, J.A., Efremenko, Yu., Ejiri, H., Elliott, S.R., Galindo-Uribarri, A., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guinn, I.S., Guiseppe, V.E., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Jasinski, B.R., Keeter, K.J., Kidd, M.F., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., MacMullin, J., Martin, R.D., Meijer, S.J., Mertens, S., Orrell, J.L., O'Shaughnessy, C., Overman, N.R., Poon, A.W.P., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Schmitt, C., Shanks, B., Shirchenko, M., Snyder, N., Suriano, A.M., Tedeschi, D., Timkin, V., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Yu, C.-H., and Yumatov, V.

Published
2015
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6. The Majorana Parts Tracking Database

Author

Abgrall, N., Aguayo, E., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Brudanin, V., Busch, M., Byram, D., Caldwell, A.S., Chan, Y-D., Christofferson, C.D., Combs, D.C., Cuesta, C., Detwiler, J.A., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Esterline, J., Fast, J.E., Finnerty, P., Fraenkle, F.M., Galindo-Uribarri, A., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guiseppe, V.E., Gusev, K., Hallin, A.L., Hazama, R., Hegai, A., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Keeter, K.J., Kidd, M.F., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J. Diaz, Leviner, L.E., Loach, J.C., MacMullin, J., Martin, R.D., Meijer, S.J., Mertens, S., Miller, M.L., Mizouni, L., Nomachi, M., Orrell, J.L., O׳Shaughnessy, C., Overman, N.R., Petersburg, R., Phillips, D.G., II, Poon, A.W.P., Pushkin, K., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Shanks, B., Shima, T., Shirchenko, M., Snavely, K.J., Snyder, N., Soin, A., Suriano, A.M., Tedeschi, D., Thompson, J., Timkin, V., Tornow, W., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Young, A.R., Yu, C.-H., Yumatov, V., and Zhitnikov, I.

Published
2015
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8. Background Model for the Majorana Demonstrator

Author

Cuesta, C., Abgrall, N., Aguayo, E., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Boswell, M., Brudanin, V., Busch, M., Byram, D., Caldwell, A.S., Chan, Y-D., Christofferson, C.D., Combs, D.C., Detwiler, J.A., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Fast, J.E., Finnerty, P., Fraenkle, F.M., Galindo-Uribarri, A., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guiseppe, V.E., Gusev, K., Hallin, A.L., Hazama, R., Hegai, A., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Keeter, K.J., Kidd, M.F., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Leviner, L.E., Loach, J.C., MacMullin, J., MacMullin, S., Martin, R.D., Meijer, S., Mertens, S., Nomachi, M., Orrell, J.L., O'Shaughnessy, C., Overman, N.R., Phillips, D.G., II, Poon, A.W.P., Pushkin, K., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Schubert, A.G., Shanks, B., Shima, T., Shirchenko, M., Snavely, K.J., Snyder, N., Suriano, A.M., Thompson, J., Timkin, V., Tornow, W., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Young, A.R., Yu, C.-H., and Yumatov, V.

Published
2015
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9. Testing the Ge Detectors for the MAJORANA DEMONSTRATOR

Author

Xu, W., Abgrall, N., Aguayo, E., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Boswell, M., Brudanin, V., Busch, M., Byram, D., Caldwell, A.S., Chan, Y-D., Christofferson, C.D., Combs, D.C., Cuesta, C., Detwiler, J.A., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Fast, J.E., Finnerty, P., Fraenkle, F.M., Galindo-Uribarri, A., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guiseppe, V.E., Gusev, K., Hallin, A.L., Hazama, R., Hegai, A., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Keeter, K.J., Kidd, M.F., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Leviner, L.E., Loach, J.C., MacMullin, J., MacMullin, S., Martin, R.D., Meijer, S., Mertens, S., Nomachi, M., Orrell, J.L., O'Shaughnessy, C., Overman, N.R., Phillips, D.G., II, Poon, A.W.P., Pushkin, K., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Schubert, A.G., Shanks, B., Shima, T., Shirchenko, M., Snavely, K.J., Snyder, N., Suriano, A.M., Thompson, J., Timkin, V., Tornow, W., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Yakushev, E., Young, A.R., Yu, C.-H., and Yumatov, V.

Published
2015
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10. The Majorana Low-noise Low-background Front-end Electronics

Author

Abgrall, N., Aguayo, E., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Boswell, M., Brudanin, V., Busch, M., Byram, D., Caldwell, A.S., Chan, Y-D., Christofferson, C.D., Combs, D.C., Cuesta, C., Detwiler, J.A., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Fast, J.E., Finnerty, P., Fraenkle, F.M., Galindo-Uribarri, A., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guiseppe, V.E., Gusev, K., Hallin, A.L., Hazama, R., Hegai, A., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Keeter, K.J., Kidd, M.F., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Leviner, L.E., Loach, J.C., MacMullin, J., MacMullin, S., Martin, R.D., Meijer, S., Mertens, S., Nomachi, M., Orrell, J.L., O'Shaughnessy, C., Overman, N.R., Phillips, D.G., II, Poon, A.W.P., Pushkin, K., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Schubert, A.G., Shanks, B., Shima, T., Shirchenko, M., Snavely, K.J., Snyder, N., Suriano, A.M., Thompson, J., Timkin, V., Tornow, W., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Young, A.R., Yu, C.-H., and Yumatov, V.

Published
2015
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11. The MAJORANA DEMONSTRATOR for 0νββ: Current Status and Future Plans

Author

Green, M.P., Abgrall, N., Aguayo, E., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Boswell, M., Brudanin, V., Busch, M., Byram, D., Caldwell, A.S., Chan, Y.-D., Christofferson, C.D., Combs, D.C., Cuesta, C., Detwiler, J.A., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Fast, J.E., Finnerty, P., Fraenkle, F.M., Galindo-Uribarri, A., Giovanetti, G.K., Goett, J., Gruszko, J., Guiseppe, V.E., Gusev, K., Hallin, A.L., Hazama, R., Hegai, A., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Keeter, K.J., Kidd, M.F., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Leviner, L.E., Loach, J.C., MacMullin, J., MacMullin, S., Martin, R.D., Meijer, S., Mertens, S., Nomachi, M., Orrell, J.L., O'Shaughnessy, C., Overman, N.R., Phillips, D.G., II, Poon, A.W.P., Pushkin, K., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Schubert, A.G., Shanks, B., Shima, T., Shirchenko, M., Snavely, K.J., Snyder, N., Suriano, A.M., Thompson, J., Timkin, V., Tornow, W., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Young, A.R., Yu, C.-H., and Yumatov, V.

Published
2015
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12. A Dark Matter Search with MALBEK

Author

Giovanetti, G.K., Abgrall, N., Aguayo, E., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Boswell, M., Brudanin, V., Busch, M., Byram, D., Caldwell, A.S., Chan, Y-D., Christofferson, C.D., Combs, D.C., Cuesta, C., Detwiler, J.A., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Fast, J.E., Finnerty, P., Fraenkle, F.M., Galindo-Uribarri, A., Goett, J., Green, M.P., Gruszko, J., Guiseppe, V.E., Gusev, K., Hallin, A.L., Hazama, R., Hegai, A., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Keeter, K.J., Kidd, M.F., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Leviner, L.E., Loach, J.C., MacMullin, J., MacMullin, S., Martin, R.D., Meijer, S., Mertens, S., Nomachi, M., Orrell, J.L., O'Shaughnessy, C., Overman, N.R., Phillips, D.G., II, Poon, A.W.P., Pushkin, K., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Ronquest, M.C., Schubert, A.G., Shanks, B., Shima, T., Shirchenko, M., Snavely, K.J., Snyder, N., Suriano, A.M., Thompson, J., Timkin, V., Tornow, W., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Young, A.R., Yu, C.-H., and Yumatov, V.

Published
2015
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13. THE MAJORANA DOUBLE BETA DECAY EXPERIMENT: PRESENT STATUS

Author

Barabash, A.S., primary, Abgrall, N., additional, Arnquist, I.J., additional, Avignone, F.T., additional, Bertrand, F.E., additional, Bradley, A.W., additional, Brudanin, V., additional, Busch, M., additional, Buuck, M., additional, Caldwell, A.S., additional, Chan, Y-D., additional, Christofferson, C.D., additional, Chu, P.-H., additional, Cuesta, C., additional, Detwiler, J.A., additional, Dunagan, C., additional, Efremenko, Yu., additional, Ejiri, H., additional, Elliott, S.R., additional, Galindo-Uribarri, A., additional, Gilliss, T., additional, Giovanetti, G.K., additional, Goett, J., additional, Green, M.P., additional, Gruszko, J., additional, Guinn, I.S., additional, Guiseppe, V.E., additional, Henning, R., additional, Hoppe, E.W., additional, Howard, S., additional, Howe, M.A., additional, Jasinski, B.R., additional, Keeter, K.J., additional, Kidd, M.F., additional, Konovalov, S.I., additional, Kouzes, R.T., additional, LaFerriere, B.D., additional, Leon, J., additional, Lopez, M., additional, MacMullin, J., additional, Martin, R.D., additional, Massarczyk, R., additional, Meijer, S.J., additional, Mertens, S., additional, Orrell, J.L., additional, O’Shaughnessy, C., additional, Poon, A.W.P., additional, Radford, D.C., additional, Rager, J., additional, Rielage, K., additional, Robertson, R.G.H., additional, Romero-Romero, E., additional, Shanks, B., additional, Shirchenko, M., additional, Suriano, A.M., additional, Tedeschi, D., additional, Trimble, J.E., additional, Varner, R.L., additional, Vasilyev, S., additional, Vetter, K., additional, Vorren, K., additional, White, B.R., additional, Wilkerson, J.F., additional, Wiseman, C., additional, Xu, W., additional, Yakushev, E., additional, Yu, C.-H., additional, Yumatov, V., additional, and Zhitnikov, I., additional

Published
2017
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14. Characteristics of signals originating near the lithium-diffused N+ contact of high purity germanium p-type point contact detectors

Author

Aguayo, E., Amman, M., Avignone, F.T., III, Barabash, A.S., Barton, P.J., Beene, J.R., Bertrand, F.E., Boswell, M., Brudanin, V., Busch, M., Chan, Y.-D., Christofferson, C.D., Collar, J.I., Combs, D.C., Cooper, R.J., Detwiler, J.A., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Esterline, J., Fast, J.E., Fields, N., Finnerty, P., Fraenkle, F.M., Galindo-Uribarri, A., Gehman, V.M., Giovanetti, G.K., Green, M.P., Guiseppe, V.E., Gusey, K., Hallin, A.L., Hazama, R., Henning, R., Hoppe, E.W., Horton, M., Howard, S., Howe, M.A., Johnson, R.A., Keeter, K.J., Kidd, M.F., Knecht, A., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Leviner, L.E., Loach, J.C., Looker, Q., Luke, P.N., MacMullin, S., Marino, M.G., Martin, R.D., Merriman, J.H., Miller, M.L., Mizouni, L., Nomachi, M., Orrell, J.L., Overman, N.R., Perumpilly, G., Phillips, D.G., II, Poon, A.W.P., Radford, D.C., Rielage, K., Robertson, R.G.H., Ronquest, M.C., Schubert, A.G., Shima, T., Shirchenko, M., Snavely, K.J., Steele, D., Strain, J., Timkin, V., Tornow, W., Varner, R.L., Vetter, K., Vorren, K., Wilkerson, J.F., Yakushev, E., Yaver, H., Young, A.R., Yu, C.-H., and Yumatov, V.

Published
2013
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16. The Majorana Experiment

Author

Aalseth, C.E., Aguayo, E., Amman, M., Avignone, F.T., III, Back, H.O., Bai, X., Barabash, A.S., Barbeau, P.S., Bergevin, M., Bertrand, F.E., Boswell, M., Brudanin, V., Bugg, W., Burritt, T.H., Busch, M., Capps, G., Chan, Y.-D., Collar, J.I., Cooper, R.J., Creswick, R., Detwiler, J.A., Diaz, J., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Ely, J., Esterline, J., Farach, H., Fast, J.E., Fields, N., Finnerty, P., Fraenkle, F.M., Gehman, V.M., Giovanetti, G.K., Green, M., Guiseppe, V.E., Gusey, K., Hallin, A.L., Harper, G.C., Hazama, R., Henning, R., Hime, A., Hong, H., Hoppe, E.W., Hossbach, T.W., Howard, S., Howe, M.A., Johnson, R.A., Keeter, K.J., Keillor, M., Keller, C., Kephart, J.D., Kidd, M.F., Knecht, A., Kochetov, O., Konovalov, S.I., Kouzes, R.T., LaRoque, B.H., Leviner, L., Loach, J.C., Luke, P.N., MacMullin, S., Marino, M.G., Martin, R.D., Medlin, D., Mei, D.-M., Miley, H.S., Miller, M.L., Mizouni, L., Myers, A.W., Nomachi, M., Orrell, J.L., Peterson, D., Phillips, D.G., II, Poon, A.W.P., Perevozchikov, O., Perumpilly, G., Prior, G., Radford, D.C., Reid, D., Rielage, K., Robertson, R.G.H., Rodriguez, L., Ronquest, M.C., Salazar, H., Schubert, A.G., Shima, T., Shirchenko, M., Sobolev, V., Steele, D., Strain, J., Swift, G., Thomas, K., Timkin, V., Tornow, W., Van Wechel, T.D., Vanyushin, I., Varner, R.L., Vetter, K., Vorren, K., Wilkerson, J.F., Wolfe, B.A., Xiang, W., Yakushev, E., Yaver, H., Young, A.R., Yu, C.-H., Yumatov, V., and Zhang, C.

Published
2011
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17. Astroparticle physics with a customized low-background broad energy Germanium detector

Author

Aalseth, C.E., Amman, M., Avignone, F.T., III, Back, H.O., Barabash, A.S., Barbeau, P.S., Bergevin, M., Bertrand, F.E., Boswell, M., Brudanin, V., Bugg, W., Burritt, T.H., Busch, M., Capps, G., Chan, Y.-D., Collar, J.I., Cooper, R.J., Creswick, R., Detwiler, J.A., Diaz, J., Doe, P.J., Efremenko, Yu., Egorov, V., Ejiri, H., Elliott, S.R., Ely, J., Esterline, J., Farach, H., Fast, J.E., Fields, N., Finnerty, P., Fujikawa, B., Fuller, E., Gehman, V.M., Giovanetti, G.K., Guiseppe, V.E., Gusey, K., Hallin, A.L., Harper, G.C., Hazama, R., Henning, R., Hime, A., Hoppe, E.W., Hossbach, T.W., Howe, M.A., Johnson, R.A., Keeter, K.J., Keillor, M., Keller, C., Kephart, J.D., Kidd, M.F., Knecht, A., Kochetov, O., Konovalov, S.I., Kouzes, R.T., Leviner, L., Loach, J.C., Luke, P.N., MacMullin, S., Marino, M.G., Martin, R.D., Mei, D.-M., Miley, H.S., Miller, M.L., Mizouni, L., Meyers, A.W., Nomachi, M., Orrell, J.L., Peterson, D., Phillips, D.G., II, Poon, A.W.P., Prior, G., Qian, J., Radford, D.C., Rielage, K., Robertson, R.G.H., Rodriguez, L., Rykaczewski, K.P., Salazar, H., Schubert, A.G., Shima, T., Shirchenko, M., Steele, D., Strain, J., Swift, G., Thomas, K., Timkin, V., Tornow, W., Van Wechel, T.D., Vanyushin, I., Varner, R.L., Vetter, K., Wilkerson, J.F., Wolfe, B.A., Xiang, W., Yakushev, E., Yaver, H., Young, A.R., Yu, C.-H., Yumatov, V., Zhang, C., and Zimmerman, S.

Published
2011
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18. The Majorana Demonstrator readout electronics system

Author

Abgrall, N., additional, Amman, M., additional, Arnquist, I.J., additional, Avignone, F.T., additional, Barabash, A.S., additional, Barton, C.J., additional, Barton, P.J., additional, Bertrand, F.E., additional, Bhimani, K.H., additional, Bos, B., additional, Bradley, A.W., additional, Burritt, T.H., additional, Busch, M., additional, Buuck, M., additional, Caldwell, T.S., additional, Chan, Y-D., additional, Christofferson, C.D., additional, Chu, P.-H., additional, Clark, M.L., additional, Cooper, R.J., additional, Cuesta, C.., additional, Detwiler, J.A., additional, Drobizhev, A., additional, Edwins, D.W., additional, Efremenko, Yu., additional, Ejiri, H., additional, Elliott, S.R., additional, Gilliss, T., additional, Giovanetti, G.K., additional, Green, M.P., additional, Gruszko, J., additional, Guinn, I.S., additional, Guiseppe, V.E., additional, Haufe, C.R., additional, Hegedus, R.J., additional, Henning, R., additional, Hervas Aguilar, D., additional, Hoppe, E.W., additional, Hostiuc, A., additional, Kidd, M.F., additional, Kim, I., additional, Kouzes, R.T., additional, Li, A., additional, Loach, J.C., additional, Lopez, A.M., additional, López-Castaño, J.M., additional, Luke, P.N., additional, Martin, E.L., additional, Martin, R.D., additional, Massarczyk, R., additional, Meijer, S.J., additional, Mertens, S., additional, Myslik, J., additional, Oli, T.K., additional, Othman, G., additional, Peterson, D., additional, Pettus, W., additional, Poon, A.W.P., additional, Radford, D.C., additional, Rager, J., additional, Reine, A.L., additional, Rielage, K., additional, Robertson, R.G.H., additional, Ruof, N.W., additional, Sayki, B., additional, Stortini, M.J., additional, Tedeschi, D., additional, Turqueti, M., additional, Van Wechel, T.D., additional, Varner, R.L., additional, Vasilyev, S., additional, Vetter, K., additional, Wilkerson, J.F., additional, Wiseman, C., additional, Xu, W., additional, Yaver, H., additional, Yu, C.-H., additional, Zhu, B.X., additional, and Zimmermann, S., additional

Published
2022
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19. Experimental study of C 13 (α,n) O 16 reactions in the Majorana Demonstrator calibration data

Author

Othman, G., Green, M.P., Ejiri, H., Guiseppe, V.E., Wiseman, C., Martin, E.L., Li, A., Varner, R.L., Yu, C.-H., Meijer, S.J., Chu, P.-H., Pettus, W., Clark, M.L., Radford, D.C., Efremenko, Y., López-Castaño, J.M., Rielage, K., Hervas Aguilar, D., Barabash, A.S., Arnquist, I.J., Lannen, T.E., Busch, M., Buuck, M., Blalock, E., Bos, B., Christofferson, C.D., Paudel, L.S., Giovanetti, G.K., Gruszko, J., Elliott, S.R., Guinn, I.S., Wilkerson, J.F., Tedeschi, D., Xu, W., Massarczyk, R., Vasilyev, S., Martin, R.D., Zhu, B.X., Oli, T.K., Cuesta, C., Lopez, A.M., Detwiler, J.A., Kouzes, R.T., Hoppe, E.W., Ruof, N.W., Barton, C.J., Bhimani, K.H., Caldwell, T.S., Chan, Y.-D., Hostiuc, A., Majorana Collaboration, Avignone, F.T., III, Kidd, M.F., Poon, A.W.P., Kim, I., Haufe, C.R., Henning, R., and Reine, A.L.

Abstract

Neutron captures and delayed decays of reaction products are common sources of backgrounds in ultrarare event searches. In this work, we studied C13(α,n)O16 reactions induced by α particles emitted within the calibration sources of the Majorana Demonstrator. These sources are thorium-based calibration standards enclosed in carbon-rich materials. The reaction rate was estimated by using the 6129-keV γ rays emitted from the excited O16 states that are populated when the incoming α particles exceed the reaction Q value. Thanks to the excellent energy performance of the Demonstrator's germanium detectors, these characteristic photons can be clearly observed in the calibration data. Facilitated by Geant4 simulations, a comparison between the observed 6129-keV photon rates and predictions by a talys-based software was performed. The measurements and predictions were found to be consistent, albeit with large statistical uncertainties. This agreement provides support for background projections from (α,n) reactions in future double-beta decay search efforts.

Published
2022
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20. The MAJORANA DEMONSTRATOR Readout Electronics System

Author

Detwiler, J.A., Lopez, A.M., Bertrand, F.E., Bos, B., Chan, Y.-D., Peterson, D., Ejiri, H., Kouzes, R.T., Avignone, F.T., III, Arnquist, I.J., Guiseppe, V.E., Bradley, A.W., Yaver, H., Myslik, J., Oli, T.K., Chu, P.-H., Wilkerson, J.F., Wiseman, C., Yu, C.-H., Amman, M., Varner, R.L., Barabash, A.S., Drobizhev, A., Vasilyev, S., Hervas Aguilar, D., Hegedus, R.J., Hoppe, E.W., Li, A., Luke, P.N., Abgrall, N., Martin, E.L., Pettus, W., Busch, M., Caldwell, T.S., Zimmermann, S., Zhu, B.X., Sayki, B., Stortini, M.J., Massarczyk, R., Meijer, S.J., Rielage, K., Robertson, R.G.H., Giovanetti, G.K., Kidd, M.F., Hostiuc, A., Rager, J., Barton, P.J., Bhimani, K.H., Loach, J.C., Cooper, R.J., Martin, R.D., Henning, R., Clark, M.L., Burritt, T.H., Gilliss, T., Gruszko, J., Mertens, S., Haufe, C.R., Ruof, N.W., Green, M.P., Tedeschi, D., Turqueti, M., Kim, I., Barton, C.J., Reine, A.L., Elliott, S.R., Cuesta, C., Othman, G., Efremenko, Y., Poon, A.W.P., Radford, D.C., Buuck, M., Edwins, D.W., Xu, W., Christofferson, C.D., Vetter, K., Guinn, I.S., López-Castaño, J.M., and Van Wechel, T.D.

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment, Instrumentation, Mathematical Physics, High Energy Physics - Experiment
Abstract

The MAJORANA DEMONSTRATOR comprises two arrays of high-purity germanium detectors constructed to search for neutrinoless double-beta decay in 76-Ge and other physics beyond the Standard Model. Its readout electronics were designed to have low electronic noise, and radioactive backgrounds were minimized by using low-mass components and low-radioactivity materials near the detectors. This paper provides a description of all components of the MAJORANA DEMONSTRATOR readout electronics, spanning the front-end electronics and internal cabling, back-end electronics, digitizer, and power supplies, along with the grounding scheme. The spectroscopic performance achieved with these readout electronics is also demonstrated., For submission to JINST, 17 figures. v2: revised version

Published
2021

21. The Majorana Demonstrator Status and Preliminary Results

Author

Yu C.-H., Alvis S.I., Arnquist I.J., Avignone F.T., Barabash A.S., Barton C.J., Bertrand F.E., Bode T., Brudanin V., Busch M., Buuck M., Caldwell T.S., Chan Y.-D., Christofferson C.D., Chu P.-H., Cuesta C., Detwiler J.A., Dunagan C., Efremenko Yu, Ejiri H., Elliott S.R., Gilliss T., Giovanetti G.K., Green M., Gruszko J., Guinn I.S., Guiseppe V.E., Haufe C.R., Hehn L., Henning R., Hoppe E.W., Howe M.A., Keeter K.J., Kidd M.F., Konovalov S.I., Kouzes R.T., Lopez A.M., Martin R.D., Massarczyk R., Meijer S.J., Mertens S., Myslik J., Othman G., Pettus W., Poon A.W.P., Radford D.C., Rager J., Reine A.L., Rielage K., Ruof N.W., Shanks B., Shirchenko M., Suriano A.M., Tedeschi D., Varner R.L., Vasilyev S., Vetter K., Vorren K., White B.R., Wilkerson J.F., Wiseman C., Xu W., Yakushev E., Yumatov V., Zhitnikov I., and Zhu B.Z.

Subjects
Physics, QC1-999
Abstract

The Majorana Collaboration is using an array of high-purity Ge detectors to search for neutrinoless double-beta decay in 76Ge. Searches for neutrinoless double-beta decay are understood to be the only viable experimental method for testing the Majorana nature of the neutrino. Observation of this decay would imply violation of lepton number, that neutrinos are Majorana in nature, and provide information on the neutrino mass. The Majorana Demonstrator comprises 44.1 kg of p-type point-contact Ge detectors (29.7 kg enriched in 76Ge) surrounded by a low-background shield system. The experiment achieved a high efficiency of converting raw Ge material to detectors and an unprecedented detector energy resolution of 2.5 keV FWHM at Qββ. The Majorana collaboration began taking physics data in 2016. This paper summarizes key construction aspects of the Demonstrator and shows preliminary results from initial data.

Published
2018
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22. Search for double- β decay of Ge 76 to excited states of Se 76 with the majorana demonstrator

Author

Varner, R.L., Elliott, S.R., Ruof, N.W., Gilliss, T., Busch, M., Chu, P.-H., Reine, A.L., Guinn, I.S., Stortini, M.J., Tedeschi, D., Saykl, B., Giovanetti, G.K., Efremenko, Y., Blalock, E., Wilkerson, J.F., Vasilyev, S., Myslik, J., Zhu, B.X., Xu, W., Christofferson, C.D., Buuck, M., Hostiuc, A., Kouzes, R.T., Lopez, A.M., Martin, R.D., Wiseman, C., Barabash, A.S., Kidd, M.F., López-Castaño, J.M., Edwards, T.R., Green, M.P., Ejiri, H., Gruszko, J., Martin, E.L., Othman, G., Paudel, L.S., Meijer, S.J., Bos, B., Yu, C.-H., Chan, Y.-D., Massarczyk, R., Guiseppe, V.E., Detwiler, J.A., Rielage, K., Bertrand, F.E., Hervas Aguilar, D., Kim, I., Hegedus, R.J., Avignone, F.T., III, Poon, A.W.P., Caldwell, T.S., Mertens, S., Oli, T.K., Cuesta, C., Drobizhev, A., Barton, C.J., Haufe, C.R., Pettus, W., Hoppe, E.W., Arnquist, I.J., Clark, M.L., Radford, D.C., and Edwins, D.W.

Abstract

The majorana demonstrator is a neutrinoless double-β decay search consisting of a low-background modular array of high-purity germanium detectors, ∼2/3 of which are enriched to 88% in Ge76. The experiment is also searching for double-beta decay of Ge76 to excited states (e.s.) in Se76. Ge76 can decay into three daughter states of Se76, with clear event signatures consisting of a ββ-decay followed by the prompt emission of one or two γ rays. This results with high probability in multi-detector coincidences. The granularity of the demonstrator detector array enables powerful discrimination of this event signature from backgrounds. Using 41.9 kg yr of isotopic exposure, the demonstrator has set world leading limits for each e.s. decay of Ge76, with 90% CL lower half-life limits in the range of (0.75-4.0)×1024 yr. In particular, for the 2ν transition to the first 0+ e.s. of Se76, a lower half-life limit of 7.5×1023 yr at 90% CL was achieved.

Published
2021

23. Signatures of muonic activation in the Majorana Demonstrator

Author

Massarczyk, R., Green, M.P., Hoppe, E.W., Blalock, E., Cuesta, C., Reine, A.L., Mertens, S., Lopez, A.M., Chan, Y.-D., Guiseppe, V.E., Ruof, N.W., Radford, D.C., Meijer, S.J., Gruszko, J., Efremenko, Y., Avignone, F.T., III, Tedeschi, D., Yu, C.-H., Rielage, K., Oli, T.K., Ejiri, H., Wiseman, C., Vasilyev, S., Chu, P.-H., Othman, G., Martin, R.D., Zhu, B.X., Giovanetti, G.K., Hervas Aguilar, D., Henning, R., Caldwell, T.S., Xu, W., Lannen, T.E.V., Kim, I., Elliott, S.R., Buuck, M., Arnquist, I.J., Christofferson, C.D., Paudel, L.S., Bertrand, F.E., Clark, M.L., López-Castaño, J.M., Edwards, T.R., Bos, B., Detwiler, J.A., Wilkerson, J.F., Varner, R.L., Haufe, C.R., Kouzes, R.T., Pettus, W., Hostiuc, A., Martin, E.L., Busch, M., Kidd, M.F., Guinn, I.S., Barton, C.J., Barabash, A.S., and Poon, A.W.P.

Subjects
Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Experiments searching for very rare processes such as neutrinoless double-beta decay require a detailed understanding of all sources of background. Signals from radioactive impurities present in construction and detector materials can be suppressed using a number of well-understood techniques. Background from in-situ cosmogenic interactions can be reduced by siting an experiment deep underground. However, the next generation of such experiments have unprecedented sensitivity goals of 10$^{28}$ years half-life with background rates of 10$^{-5}$cts/(keV kg yr) in the region of interest. To achieve these goals, the remaining cosmogenic background must be well understood. In the work presented here, Majorana Demonstrator data is used to search for decay signatures of meta-stable germanium isotopes. Contributions to the region of interest in energy and time are estimated using simulations, and compared to Demonstrator data. Correlated time-delayed signals are used to identify decay signatures of isotopes produced in the germanium detectors. A good agreement between expected and measured rate is found and different simulation frameworks are used to estimate the uncertainties of the predictions. The simulation campaign is then extended to characterize the background for the LEGEND experiment, a proposed tonne-scale effort searching for neutrinoless double-beta decay in $^{76}$Ge., Comment: 14 pages, 12 figures

Published
2021
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25. Search for neutrinoless double- β decay in Ge 76 with 26 kg yr of exposure from the Majorana Demonstrator

Author

Ejiri, H., Hehn, L., Haufe, C.R., Hoppe, E.W., Zhitnikov, I., Ruof, N.W., Piliounis, A., Gilliss, T., Green, M.P., Alvis, S.I., Yumatov, V., Poon, A.W.P., Bos, B., Xu, W., Kouzes, R.T., Kidd, M.F., Tedeschi, D., Shanks, B., Cuesta, C., Mertens, S., López-Castaño, J.M., Wilkerson, J.F., Vasilyev, S., Myslik, J., Buuck, M., Hegedus, R.J., Avignone, F.T., III, Barabash, A.S., Guiseppe, V.E., Howe, M.A., Martin, R.D., Hervas Aguilar, D., Rielage, K., Othman, G., Detwiler, J.A., Busch, M., Rager, J., Gruszko, J., Giovanetti, G.K., Barton, C.J., Zhu, B.X., Christofferson, C.D., Yakushev, E., Efremenko, Y., Chu, P.-H., Clark, M.L., Chan, Y.-D., Varner, R.L., Konovalov, S.I., Basu, V., Guinn, I.S., Massarczyk, R., Pettus, W., Yu, C.-H., Caldwell, T.S., Henning, R., Majorana Collaboration, Reine, A.L., Shirchenko, M., Radford, D.C., Bertrand, F.E., Wiseman, C., Arnquist, I.J., Meijer, S.J., White, B.R., and Elliott, S.R.

Abstract

The Majorana Collaboration is operating an array of high-purity Ge detectors to search for the neutrinoless double-β decay of Ge76. The Majorana Demonstrator consists of 44.1 kg of Ge detectors (29.7 kg enriched to 88% in Ge76) split between two modules constructed from ultraclean materials. Both modules are contained in a low-background shield at the Sanford Underground Research Facility in Lead, South Dakota. We present updated results on the search for neutrinoless double-β decay in Ge76 with 26.0±0.5 kg yr of enriched exposure. With the Demonstrator's energy resolution of 2.53 keV FWHM at Qββ, which is the best among all neutrinoless double-β decay experiments, we observe one event in the region of interest with 0.65 events expected from the estimated background, resulting in a lower limit on the Ge76 neutrinoless double-β decay half-life of 2.7×1025 yr [90% confidence level (CL)] with a median sensitivity of 4.8×1025 yr (90% CL). Depending on the matrix elements used, a 90% CL upper limit on the effective Majorana neutrino mass in the range of 200-433 meV is obtained. The measured background in the configurations with full shielding and optimized grounding is 11.9±2.0 counts/(FWHM t yr).

Published
2019
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26. Search for trinucleon decay in the Majorana Demonstrator

Author

Wiseman, C., Zhitnikov, I., Bos, B., Ejiri, H., Basu, V., Kidd, M.F., Gruszko, J., Rielage, K., Efremenko, Y., Hegedus, R.J., Meijer, S.J., Yu, C.-H., Barabash, A.S., Hervas Aguilar, D., Bertrand, F.E., Green, M.P., Barton, C.J., Chu, P.-H., Reine, A.L., Detwiler, J.A., Piliounis, A., Pettus, W., Yakushev, E., Ruof, N.W., Vasilyev, S., Cuesta, C., Howe, M.A., Varner, R.L., Xu, W., Massarczyk, R., Avignone, F.T., III, Elliott, S.R., Busch, M., Konovalov, S.I., Christofferson, C.D., Buuck, M., Rager, J., Hoppe, E.W., Chan, Y.-D., Tedeschi, D., Guiseppe, V.E., Yumatov, V., Radford, D.C., López-Castaño, J.M., Brudanin, V., Giovanetti, G.K., Wilkerson, J.F., Caldwell, T.S., Guinn, I.S., Othman, G., Poon, A.W.P., White, B.R., Kouzes, R.T., Myslik, J., Haufe, C.R., Arnquist, I.J., Shirchenko, M., Zhu, B.X., Gilliss, T., Mertens, S., Majorana Collaboration, Shanks, B., Martin, R.D., Hehn, L., Keeter, K.J., and Alvis, S.I.

Abstract

The Majorana Demonstrator is an ultra-low-background experiment searching for neutrinoless double-beta decay in Ge76. The heavily shielded array of germanium detectors, placed nearly a mile underground at the Sanford Underground Research Facility in Lead, South Dakota, also allows searches for new exotic physics. We present the first limits for trinucleon decay-specific modes and invisible decay modes for Ge isotopes. We find a half-life limit of 4.9×1025 yr for the decay Ge76(ppn)→Zn73 e+π+ and 4.7×1025 yr for the decay Ge76(ppp)→Cu73 e+π+π+. The half-life limit for the invisible triproton decay mode of Ge76 was found to be 7.5×1024 yr.

Published
2019
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27. Multisite event discrimination for the majorana demonstrator

Author

Henning, R., Othman, G., Yakushev, E., Reine, A.L., Zhu, B.X., Rielage, K., Ejiri, H., Yumatov, V., Rager, J., Guinn, I.S., Keeter, K.J., Guiseppe, V.E., Poon, A.W.P., Varner, R.L., Xu, W., Buuck, M., Kouzes, R.T., Myslik, J., Gruszko, J., Barton, C.J., Basu, V., Hoppe, E.W., Alvis, S.I., Caldwell, T.S., Chu, P.-H., Hehn, L., Wiseman, C., Meijer, S.J., Bos, B., Radford, D.C., Ruof, N.W., Mertens, S., Hegedus, R.J., Howe, M.A., Konovalov, S.I., Haufe, C.R., Yu, C.-H., Elliott, S.R., White, B.R., Chan, Y.-D., Gilliss, T., Christofferson, C.D., Shirchenko, M., Wilkerson, J.F., Massarczyk, R., Detwiler, J.A., Majorana Collaboration, Green, M.P., Barabash, A.S., Shanks, B., Vasilyev, S., Pettus, W., Kidd, M.F., Cuesta, C., Giovanetti, G.K., Martin, R.D., Tedeschi, D., Hervas Aguilar, D., Lopez, A.M., Bertrand, F.E., Piliounis, A., Arnquist, I.J., and Avignone, F.T., III

Abstract

The Majorana Demonstrator is searching for neutrinoless double-beta decay (0νββ) in Ge76 using arrays of point-contact germanium detectors operating at the Sanford Underground Research Facility. Background results in the 0νββ region of interest from data taken during construction, commissioning, and the start of full operations have been recently published. A pulse shape analysis cut applied to achieve this result, named AvsE, is described in this paper. This cut is developed to remove events whose waveforms are typical of multisite energy deposits while retaining (90±3.5)% of single-site events. This pulse shape discrimination is based on the relationship between the maximum current and energy, and tuned using Th228 calibration source data. The efficiency uncertainty accounts for variation across detectors, energy, and time, as well as for the position distribution difference between calibration and 0νββ events, established using simulations.

Published
2019
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28. Search for Neutrinoless Double- β Decay in Ge 76 with the Majorana Demonstrator

Author

Christofferson, C.D., Finnerty, P., Chan, Y.-D., Haufe, C.R., Myslik, J., Tedeschi, D., Caldwell, T.S., Martin, R.D., Miller, M.L., Fuller, E., McDonald, A.B., Vetter, K., Amman, M., Aalseth, C.E., Zhu, B.X., Doe, P.J., Gruszko, J., Johnson, R.A., Othman, G., Zhitnikov, I., Lesko, K.T., Barbeau, P.S., Aguayo, E., Orrell, J.L., Leviner, L.E., Steele, D., Collar, J.I., Henning, R., Pushkin, K., Macmullin, S., Chu, P.-H., Wiseman, C., Bertrand, F.E., Suriano, A.M., Avignone, F.T., III, Fraenkle, F.M., Hehn, L., Meijer, S.J., Poon, A.W.P., Macmullin, J., Ruof, N.W., Lopez, A.M., Barton, C.J., Fujikawa, B.K., Kephart, J.D., Barabash, A.S., Yakushev, E., Marino, M.G., Dunmore, J.A., Green, M.P., Zimmermann, S., O'Shaughnessy, C., Bradley, A.W., Elliott, S.R., Tornow, W., Knecht, A., Hossbach, T.W., Bos, B., Rager, J., Ejiri, H., Young, A.R., Hoppe, E.W., Gehman, V.M., Guinn, I.S., Radford, D.C., Brodzinski, R.L., Shirchenko, M., Galindo-Uribarri, A., Mei, D.-M., Efremenko, Y., Loach, J.C., Fast, J.E., Merriman, J.H., Snavely, K.J., Overman, N.R., Phillips, D.G., II, Boswell, M., Rielage, K., Miley, H.S., Kouzes, R.T., Wilkerson, J.F., Xu, W., Reine, A.L., Ronquest, M.C., Brudanin, V., Varner, R.L., Konovalov, S.I., Detwiler, J.A., Kidd, M.F., Gilliss, T., Hallin, A.L., Arnquist, I.J., Pettus, W., Yaver, H., Abgrall, N., Massarczyk, R., Vasilyev, S., Howe, M.A., Shanks, B., Schubert, A.G., Back, H.O., Laferriere, B.D., Yu, C.-H., Jasinski, B.R., Goett, J., Luke, P.N., Snyder, N., Bode, T., Giovanetti, G.K., Vorren, K., Yumatov, V., Combs, D.C., Leon, J., Mertens, S., White, B.R., Reeves, J.H., Busch, M., Robertson, R.G.H., Keeter, K.J., Trimble, J.E., Barton, P.J., Cuesta, C., Caldwell, A.S., Cooper, R.J., Guiseppe, V.E., Alvis, S.I., Perumpilly, G., Buuck, M., and Fu, Z.

Abstract

The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-β decay in Ge76. The Majorana Demonstrator comprises 44.1 kg of Ge detectors (29.7 kg enriched in Ge76) split between two modules contained in a low background shield at the Sanford Underground Research Facility in Lead, South Dakota. Here we present results from data taken during construction, commissioning, and the start of full operations. We achieve unprecedented energy resolution of 2.5 keV FWHM at Qββ and a very low background with no observed candidate events in 9.95 kg yr of enriched Ge exposure, resulting in a lower limit on the half-life of 1.9×1025 yr (90% C.L.). This result constrains the effective Majorana neutrino mass to below 240-520 meV, depending on the matrix elements used. In our experimental configuration with the lowest background, the background is 4.0-2.5+3.1 counts/(FWHM t yr).

Published
2018
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29. High voltage testing for the Majorana Demonstrator

Author

Abgrall, N., Arnquist, I.J., Avignone, F.T., III, Barabash, A.S., Bertrand, F.E., Bradley, A.W., Brudanin, V., Busch, M., Buuck, M., Byram, D., Caldwell, A.S., Chan, Y-D., Christofferson, C.D., Chu, P.-H., Cuesta, C., Detwiler, J.A., Doe, P.J., Dunagan, C., Efremenko, Yu., Ejiri, H., Elliott, S.R., Fu, Z., Galindo-Uribarri, A., Giovanetti, G.K., Goett, J., Green, M.P., Gruszko, J., Guinn, I.S., Guiseppe, V.E., Henning, R., Hoppe, E.W., Howard, S., Howe, M.A., Jasinski, B.R., Keeter, K.J., Kidd, M.F., Konovalov, S.I., Kouzes, R.T., LaFerriere, B.D., Leon, J., Li, A., MacMullin, J., Martin, R.D., Massarczyk, R., Meijer, S.J., Mertens, S., Orrell, J.L., O'Shaughnessy, C., Poon, A.W.P., Radford, D.C., Rager, J., Rielage, K., Robertson, R.G.H., Romero-Romero, E., Shanks, B., Shirchenko, M., Snyder, N., Suriano, A.M., Tedeschi, D., Thompson, A., Ton, K.T., Trimble, J.E., Varner, R.L., Vasilyev, S., Vetter, K., Vorren, K., White, B.R., Wilkerson, J.F., Wiseman, C., Xu, W., Yakushev, E., Yu, C.-H., and Yumatov, V.

Published
2016
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30. Initial Results from the Majorana Demonstrator

Author

Elliott, S.R., primary, Abgrall, N., additional, Arnquist, I.J., additional, Avignone, F.T., additional, Barabash, A.S., additional, Bertrand, F.E., additional, Bradley, A.W., additional, Brudanin, V., additional, Busch, M., additional, Buuck, M., additional, Caldwell, T.S., additional, Chan, Y-D., additional, Christofferson, C.D., additional, Chu, P.-H., additional, Cuesta, C., additional, Detwiler, J.A., additional, Dunagan, C., additional, Efremenko, Yu., additional, Ejiri, H., additional, Fullmer, A., additional, Galindo-Uribarri, A., additional, Gilliss, T., additional, Giovanetti, G.K., additional, Green, M.P., additional, Gruszko, J., additional, Guinn, I.S., additional, Guiseppe, V.E., additional, Henning, R., additional, Hoppe, E.W., additional, Howe, M.A., additional, Jasinski, B.R., additional, Keeter, K.J., additional, Kidd, M.F., additional, Konovalov, S.I., additional, Kouzes, R.T., additional, Leon, J., additional, Lopez, A.M., additional, MacMullin, J., additional, Martin, R.D., additional, Massarczyk, R., additional, Meijer, S.J., additional, Mertens, S., additional, Orrell, J.L., additional, O’Shaughnessy, C., additional, Poon, A.W.P., additional, Radford, D.C., additional, Rager, J., additional, Rielage, K., additional, Robertson, R.G.H., additional, Romero-Romero, E., additional, Shanks, B., additional, Shirchenko, M., additional, Suriano, A.M., additional, Tedeschi, D., additional, Trimble, J.E., additional, Varner, R.L., additional, Vasilyev, S., additional, Vetter, K., additional, Vorren, K., additional, White, B.R., additional, Wilkerson, J.F., additional, Wiseman, C., additional, Xu, W., additional, Yakushev, E., additional, Yu, C.-H., additional, Yumatov, V., additional, and Zhitnikov, I., additional

Published
2017
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31. The Majorana Demonstrator: Progress towards showing the feasibility of a tonne-scale 76Ge neutrinoless double-beta decay experiment

Author

Aguayo, E., Finnerty, P., Loach, J.C., Robertson, R.G.H., Wilkerson, J.F., Varner, R.L., Boswell, M., Leon, J., Brudanin, V., Vorren, K., Ronquest, M.C., Hoppe, E.W., Christofferson, C.D., Shima, T., Chan, Y.-D., Fields, N., Galindo-Uribarri, A., Keeter, K.J., Kochetov, O., Merriman, J.H., Knecht, A., Timkin, V., Miller, M.L., Phillips, D.G., Guiseppe, V.E., Hazma, R., Radford, D.C., Barton, P.J., Ejiri, H., Hallin, A.L., MacMullin, S., Howe, M.A., Strain, J., Elliott, S.R., Perumpilly, G., Luke, P.N., Avignone, F.T., III, Amman, M., Giovanetti, G.K., Schubert, A.G., Young, A.R., Combs, D.C., Collar, J.I., Fraenkle, F.M., Yakushev, E., Shirchenko, M., Detwiler, J.A., Cooper, R.J., Gehman, V.M., Efremenko, Y., Konovalov, S.I., Mizouni, L., Orrell, J.L., Leviner, L.E., Horton, M., Poon, A.W.P., Vetter, K., Henning, R., Tornow, W., Rielage, K., Bertrand, F.E., Beene, J.R., LaFerriere, B.D., Busch, M., Johnson, R.A., Marino, M.G., Fast, J.E., Martin, R.D., Barabash, A.S., Kidd, M.F., Esterline, J., Yumatov, V., Green, M.P., Yaver, H., Snavely, K.J., Doe, P.J., Yu, C.-H., Egorov, V., Kouzes, R.T., Gusey, K., Nomachi, M., Overman, N.R., Steele, D., and Howard, S.

Abstract

The Majorana Demonstrator will search for the neutrinoless double-beta decay (0vββ) of the 76Ge isotope with a mixed array of enriched and natural germanium detectors. The observation of this rare decay would indicate the neutrino is its own anti-particle, demonstrate that lepton number is not conserved, and provide information on the absolute mass-scale of the neutrino. The Demonstrator is being assembled at the 4850 foot level of the Sanford Underground Research Facility in Lead, South Dakota. The array will be contained in a low-background environment and surrounded by passive and active shielding. The goals for the Demonstrator are: demonstrating a background rate less than 3 t-1 y-1 in the 4 keV region of interest (ROI) surrounding the 2039 keV 76Ge endpoint energy; establishing the technology required to build a tonne-scale germanium based double-beta decay experiment; testing the recent claim of observation of 0vββ [1]; and performing a direct search for light WIMPs (3-10 GeV/c2).

Published
2014
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32. Dark matter sensitivities of the Majorana Demonstrator

Author

Gehman, V.M., Green, M.P., Miller, M.L., Yakushev, E., Snavely, K.J., Prior, G., Martin, R.D., Marino, M.G., Ejiri, H., Back, H.O., Giovanetti, G.K., Thomas, K., Rielage, K., Fields, N., Finnerty, P., Bertrand, F.E., Bergevin, M., Henning, R., Hazma, R., Varner, R.L., Tornow, W., Kouzes, R.T., Orrell, J.L., Mizouni, L., Nomachi, M., LaRoque, B.H., Collar, J.I., Howard, S., LaFerriere, B.D., Radford, D.C., Keller, C., Guiseppe, V.E., Beene, J.R., Schubert, A.G., Young, A.R., Christofferson, C.D., Poon, A.W.P., Efremenko, Y., Vetter, K., Kidd, M.F., Avignone, F.T., III, Overman, N.R., Steele, D., Leon, J., Hoppe, E.W., Cooper, R.J., Leviner, L.E., Loach, J.C., Gusey, K., Esterline, J., Elliott, S.R., Egorov, V., Robertson, R.G.H., Aguayo, E., Yu, C.-H., Boswell, M., Brudanin, V., Perumpilly, G., Strain, J., Knecht, A., Vanyushin, I., Mei, D.-M., Merriman, J.H., Barabash, A.S., Detwiler, J.A., Horton, M., Howe, M.A., Konovalov, S.I., Fraenkle, F.M., Vorren, K., Wilkerson, J.F., Shirchenko, M., Chan, Y.-D., Keeter, K.J., MacMullin, S., Fast, J.E., Ronquest, M.C., Shima, T., Busch, M., Combs, D.C., Kochetov, O., Zhang, C., Hallin, A.L., Phillips II, D.G., Yumatov, V., Timkin, V., Doe, P.J., and Johnson, R.A.

Abstract

The Majorana Demonstrator is an array of natural and enriched high purity germanium detectors that will search for the neutrinoless double-beta decay of Germanium-76 and perform a search for weakly interacting massive particles with masses below 10 GeV. To reach the background rate goal in the neutrinoless double-beta decay region of interest of 4 counts/keV/t/y, the DEMONSTRATOR will utilize a number of background reduction strategies, including a time-correlated event cut for 68Ge that requires a sub-keV energy threshold. This low energy threshold allows the DEMONSTRATOR to extend its physics reach to include a search for light WIMPs. We will discuss the detector systems and data analysis techniques required to achieve sub-keV thresholds as well as present the projected dark matter sensitivities of the Majorana Demonstrator.

Published
2012
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33. The Majorana Demonstrator: A Search for Neutrinoless Double-beta Decay of Germanium-76

Author

Vorren, K., Egorov, V., Varner, R.L., Robertson, R.G.H., Doe, P.J., Gehman, V.M., Esterline, J., Yu, C.-H., Fields, N., Yakushev, E., Zhang, C., Shirchenko, M., Mei, D.-M., Tornow, W., Konovalov, S.I., Kochetov, O., Bergevin, M., Orrell, J.L., Beene, J.R., Thomas, K., Strain, J., Knecht, A., Back, H.O., Finnerty, P., Merriman, J.H., Barabash, A.S., Wilkerson, J.F., Miller, M.L., Overman, N.R., Bertrand, F.E., Vetter, K., LaRoque, B.H., Giovanetti, G.K., Poon, A.W.P., Chan, Y.-D., Mizouni, L., Avignone, F.T., III, Aguayo, E., Brudanin, V., Boswell, M., Phillips II, D.G., Yumatov, V., Loach, J.C., Shima, T., Radford, D.C., Perumpilly, G., Christofferson, C.D., Martin, R.D., Elliott, S.R., Kouzes, R.T., Timkin, V., Schubert, A.G., Cooper, R.J., Combs, D.C., Prior, G., Hoppe, E.W., Guiseppe, V.E., Efremenko, Y., Rielage, K., MacMullin, S., Kidd, M.F., Hazma, R., Steele, D., Green, M.P., Ronquest, M.C., Horton, M., Hallin, A.L., Gusey, K., Snavely, K.J., Leon, J., Fast, J.E., LaFerriere, B.D., Howe, M.A., Nomachi, M., Henning, R., Busch, M., Howard, S., Fraenkle, F.M., Vanyushin, I., Leviner, L.E., Keller, C., Johnson, R.A., Marino, M.G., Young, A.R., Detwiler, J.A., Ejiri, H., Keeter, K.J., and Collar, J.I.

Abstract

The observation of neutrino less double-beta decay would show that neutrinos are Majorana particles and provide information on neutrino mass. Attaining sensitivities for neutrino masses in the inverted hierarchy region requires large, tonne scale detectors with extremely low backgrounds, at the level of 10-3 counts keV-1 t-1 y-1 or lower in the region of the signal. The MAJORANA collaboration is constructing the DEMONSTRATOR, an array consisting of 40 kg of p-type point contact germanium detectors, at least half of which will be enriched to 86% in 76Ge. The primary aim is to show the feasibility for a future tonne scale measurement. With a sub-keV energy threshold, the array should also be able to search for light WIMP dark matter. This paper presents a brief update on the status of constructing the DEMONSTRATOR including an electroforming facility that is now operating underground at the Sanford Underground Research Facility.

Published
2012
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34. Partial γ-ray production cross sections for (n,xnγ) reactions in natural argon at 1-30 MeV

Author

Boswell, M., Henning, R., Devlin, M., Fotiades, N., Kawano, T., Elliott, S.R., Guiseppe, V.E., Laroque, B.H., O'Donnell, J.M., Nelson, R.O., and MacMullin, S.

Abstract

Background: Neutron-induced backgrounds are a significant concern for experiments that require extremely low levels of radioactive backgrounds such as direct dark matter searches and neutrinoless double-β decay experiments. Unmeasured neutron scattering cross sections are often accounted for incorrectly in Monte Carlo simulations.Purpose: The purpose of this article is to determine partial γ-ray production cross sections for (n,xnγ) reactions in natural argon for incident neutron energies between 1 and 30 MeV.Methods: The broad-spectrum neutron beam at the Los Alamos Neutron Science Center (LANSCE) was used used for the measurement. Neutron energies were determined using time of flight, and resulting γ rays from neutron-induced reactions were detected using the GErmanium Array for Neutron Induced Excitations (GEANIE).Results: Partial γ-ray cross sections were measured for six excited states in 40Ar and two excited states in 39Ar. Measured (n,xnγ) cross sections were compared to the talys and CoH3 nuclear reaction codes.Conclusions: These new measurements will help to identify potential backgrounds in neutrinoless double-β decay and dark matter experiments that use argon as a detection medium or shielding. The measurements will also aid in the identification of neutron interactions in these experiments through the detection of γ rays produced by (n,xnγ) reactions.

Published
2012
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35. The Majorana Demonstrator: A search for neutrinoless double-beta decay of germanium-76

Author

Schuberta, A.G., primary, Aguayo, E., additional, Avignone III, F.T., additional, Zhang, C., additional, Back, H.O., additional, Barabash, A.S., additional, Bergevin, M., additional, Bertrand, F.E., additional, Boswell, M., additional, Brudanin, V., additional, Busch, M., additional, Chan, Y.D., additional, Christofferson, C.D., additional, Collar, J.I., additional, Combs, D.C., additional, Cooper, R.J., additional, Detwiler, J.A., additional, Leon, J., additional, Doe, P.J., additional, Efremenko, Yu., additional, Egorov, V., additional, Ejiri, H., additional, Elliott, S.R., additional, Esterline, J., additional, Fast, J.E., additional, Fields, N., additional, Finnerty, P., additional, Fraenkle, F.M., additional, Gehman, V.M., additional, Giovanetti, G.K., additional, Green, M.P., additional, Guiseppe, V.E., additional, Gusey, K., additional, Hallin, A.L., additional, Hazama, R., additional, Henning, R., additional, Hime, A., additional, Hoppe, E.W., additional, Horton, M., additional, Howard, S., additional, Howe, M.A. A., additional, Johnson, R.A., additional, Keeter, K.J., additional, Keillor, M.E., additional, Keller, C., additional, Kephart, J.D., additional, Kidd, M.F., additional, Knecht, A., additional, Kochetov, O., additional, Konovalov, S.I., additional, Kouzes, R.T., additional, LaFerriere, B., additional, LaRoque, B.H., additional, Leviner, L.E., additional, Loach, J.C., additional, MacMullin, S., additional, Marino, M.G., additional, Martin, R.D., additional, Mei, D.-M., additional, Merriman, J., additional, Miller, M.L., additional, Mizouni, L., additional, Nomachi, M., additional, Orrell, J.L., additional, Overman, N., additional, Phillips II, D.G., additional, Poon, A.W.P., additional, Perumpilly, G., additional, Prior, G., additional, Radford, D.C., additional, Rielage, K., additional, Robertson, R.G.H., additional, Ronquest, M.C., additional, Shima, T., additional, Shirchenko, M., additional, Snavely, K.J., additional, Sobolev, V., additional, Steele, D., additional, Strain, J., additional, Thomas, K., additional, Timkin, V., additional, Tornow, W., additional, Vanyushin, I., additional, Varner, R.L., additional, Vetter, K., additional, Vorren, K., additional, Wilkerson, J.F., additional, Wolfe, B.A., additional, Yakushev, E., additional, Young, A.R., additional, Yu, C.-H., additional, and Yumatov, V., additional

Published
2012
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36. The MAJORANA Neutrinoless Double-Beta Decay Experiment

Author

Guiseppe, V.E., primary, Aalseth, C.E., additional, Akashi-Ronquest, M., additional, Amman, M., additional, Amsbaugh, J.F., additional, Avignone, F.T., additional, Back, H.O., additional, Barabash, A.S., additional, Barbeau, P., additional, Beene, J.R., additional, Bergevin, M., additional, Bertrand, F.E., additional, Boswell, M., additional, Brudanin, V., additional, Bugg, W., additional, Burritt, T.H., additional, Chan, Y-D., additional, Cianciolo, T.V., additional, Collar, J., additional, Creswick, R., additional, Cromaz, M., additional, Detwiler, J.A., additional, Doe, P.J., additional, Dunmore, J.A., additional, Efremenko, Yu., additional, Egorov, V., additional, Ejiri, H., additional, Elliott, S.R., additional, Ely, J., additional, Esterline, J., additional, Farach, H., additional, Farmer, T., additional, Fast, J., additional, Finnerty, P., additional, Fujikawa, B., additional, Gehman, V.M., additional, Greenberg, C., additional, Gusey, K., additional, Hallin, A.L., additional, Hazama, R., additional, Henning, R., additional, Hime, A., additional, Hoppe, E., additional, Hossbach, T., additional, Howe, M.A., additional, Hurley, D., additional, Hyronimus, B., additional, Johnson, R.A., additional, Keeter, K.J., additional, Keillor, M., additional, Keller, C., additional, Kephart, J., additional, Kidd, M., additional, Kochetov, O., additional, Konovalov, S.I., additional, Kouzes, R.T., additional, Lesko, K.T., additional, Leviner, L., additional, Luke, P., additional, McDonald, A.B., additional, MacMullin, S., additional, Marino, M.G., additional, Mei, D.-M., additional, Miley, H.S., additional, Myers, A.W., additional, Nomachi, M., additional, Odom, B., additional, Orrell, J., additional, Poon, A.W.P., additional, Prior, G., additional, Radford, D.C., additional, Reeves, J.H., additional, Rielage, K., additional, Riley, N., additional, Robertson, R.G.H., additional, Rodriguez, L., additional, Rykaczewski, K.P., additional, Schubert, A.G., additional, Shima, T., additional, Shirchenko, M., additional, Strain, J., additional, Thompson, R., additional, Timkin, V., additional, Tornow, W., additional, Tull, C., additional, Van Weche, T. D., additional, Vanyushin, I., additional, Varner, R.L., additional, Vetter, K., additional, Warner, R., additional, Wilkerson, J.F., additional, Wouters, J.M., additional, Yakushev, E., additional, Young, A.R., additional, Yu, C.-H., additional, Yumatov, V., additional, and Zhang, C., additional

Published
2008
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