An improved measurement of the electric dipole moment of the neutron

I. Altarev; G. Ban; G. Bison; K. Bodek; M. Burghoff; Z. Chowdhuri; M. Daum; C. Düsing; M. Fertl; P. Fierlinger; B. Franke; C. Grab; E. Gutsmiedl; G. Hampel; W. Heil; R. Henneck; M. Horras; N. Khomutov; K. Kirch; S. Kistryn; S. Knappe-Grüneberg; A. Knecht; P. Knowles; A. Kozela; A. Kraft; F. Kuchler; J. V. Kratz; T. Lauer; B. Lauss; T. Lefort; Y. Lemiere; A. Mtchedlishvili; O. Naviliat-Cuncic; G. Quéméner; S. Paul; A. S. Pazgalev; G. Petzoldt; C. Plonka-Spehr; E. Pierre; G. Pignol; D. Rebreyend; S. Roccia; G. Rogel; P. Schmidt-Wellenburg; A. Schnabel; N. Severijns; Yu Sobolev; R. Stoepler; A. Weis; N. Wiehl; J. Zejma; J. Zenner; G. Zsigmond

doi:10.1016/j.nuclphysa.2010.05.012

An improved measurement of the electric dipole moment of the neutron

I. Altarev, G. Ban, G. Bison, K. Bodek, M. Burghoff, Z. Chowdhuri, M. Daum, C. Düsing, M. Fertl, P. Fierlinger, B. Franke, C. Grab, E. Gutsmiedl, G. Hampel, W. Heil, R. Henneck, M. Horras, N. Khomutov, K. Kirch, S. KistrynS. Knappe-Grüneberg, A. Knecht, P. Knowles, A. Kozela, A. Kraft, F. Kuchler, J. V. Kratz, T. Lauer, B. Lauss, T. Lefort, Y. Lemiere, A. Mtchedlishvili, O. Naviliat-Cuncic, G. Quéméner, S. Paul, A. S. Pazgalev, G. Petzoldt, C. Plonka-Spehr, E. Pierre, G. Pignol, D. Rebreyend, S. Roccia, G. Rogel, P. Schmidt-Wellenburg, A. Schnabel, N. Severijns, Yu Sobolev, R. Stoepler, A. Weis, N. Wiehl, J. Zejma, J. Zenner, G. Zsigmond

Chair of Precision Measurements at Extreme Conditions

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Abstract

We describe the status of the new measurement of the neutron electric dipole moment (nEDM) to be performed at the strong source of ultra-cold neutrons at the Paul Scherrer Institut. The experimental technique is based on Ramsey's method of separated oscillatory fields, applied to UCN stored in vacuum in a chamber at room temperature. Our approach is performed in three phases: in phase one, new components have been developed and tested at the Institut Laue-Langevin. Phase two is being performed at PSI, where the apparatus was moved in 2009. Here, together with the optimization of the magnetic environment, the prospective UCN density of ~ 100 cm^-3 should enable an improvement of the currently best limit by a factor of five within two years of data taking. In the third phase, a new spectrometer will then gain another order of magnitude in sensitivity. The improvements will be mainly due to (1) much higher UCN intensity, (2) improved magnetometry and magnetic field control, and (3) a double chamber configuration with opposite electric field directions.

Original language	English
Pages (from-to)	47c-52c
Journal	Nuclear Physics, Section A
Volume	844
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2010.05.012
State	Published - Nov 2010

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Altarev, I., Ban, G., Bison, G., Bodek, K., Burghoff, M., Chowdhuri, Z., Daum, M., Düsing, C., Fertl, M., Fierlinger, P., Franke, B., Grab, C., Gutsmiedl, E., Hampel, G., Heil, W., Henneck, R., Horras, M., Khomutov, N., Kirch, K., ... Zsigmond, G. (2010). An improved measurement of the electric dipole moment of the neutron. Nuclear Physics, Section A, 844(1-4), 47c-52c. https://doi.org/10.1016/j.nuclphysa.2010.05.012

@article{cfbf1723e7274461a587e3da0af25821,

title = "An improved measurement of the electric dipole moment of the neutron",

abstract = "We describe the status of the new measurement of the neutron electric dipole moment (nEDM) to be performed at the strong source of ultra-cold neutrons at the Paul Scherrer Institut. The experimental technique is based on Ramsey's method of separated oscillatory fields, applied to UCN stored in vacuum in a chamber at room temperature. Our approach is performed in three phases: in phase one, new components have been developed and tested at the Institut Laue-Langevin. Phase two is being performed at PSI, where the apparatus was moved in 2009. Here, together with the optimization of the magnetic environment, the prospective UCN density of ~ 100 cm-3 should enable an improvement of the currently best limit by a factor of five within two years of data taking. In the third phase, a new spectrometer will then gain another order of magnitude in sensitivity. The improvements will be mainly due to (1) much higher UCN intensity, (2) improved magnetometry and magnetic field control, and (3) a double chamber configuration with opposite electric field directions.",

author = "I. Altarev and G. Ban and G. Bison and K. Bodek and M. Burghoff and Z. Chowdhuri and M. Daum and C. D{\"u}sing and M. Fertl and P. Fierlinger and B. Franke and C. Grab and E. Gutsmiedl and G. Hampel and W. Heil and R. Henneck and M. Horras and N. Khomutov and K. Kirch and S. Kistryn and S. Knappe-Gr{\"u}neberg and A. Knecht and P. Knowles and A. Kozela and A. Kraft and F. Kuchler and Kratz, {J. V.} and T. Lauer and B. Lauss and T. Lefort and Y. Lemiere and A. Mtchedlishvili and O. Naviliat-Cuncic and G. Qu{\'e}m{\'e}ner and S. Paul and Pazgalev, {A. S.} and G. Petzoldt and C. Plonka-Spehr and E. Pierre and G. Pignol and D. Rebreyend and S. Roccia and G. Rogel and P. Schmidt-Wellenburg and A. Schnabel and N. Severijns and Yu Sobolev and R. Stoepler and A. Weis and N. Wiehl and J. Zejma and J. Zenner and G. Zsigmond",

year = "2010",

month = nov,

doi = "10.1016/j.nuclphysa.2010.05.012",

language = "English",

volume = "844",

pages = "47c--52c",

journal = "Nuclear Physics, Section A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "1-4",

}

Altarev, I, Ban, G, Bison, G, Bodek, K, Burghoff, M, Chowdhuri, Z, Daum, M, Düsing, C, Fertl, M, Fierlinger, P, Franke, B, Grab, C, Gutsmiedl, E, Hampel, G, Heil, W, Henneck, R, Horras, M, Khomutov, N, Kirch, K, Kistryn, S, Knappe-Grüneberg, S, Knecht, A, Knowles, P, Kozela, A, Kraft, A, Kuchler, F, Kratz, JV, Lauer, T, Lauss, B, Lefort, T, Lemiere, Y, Mtchedlishvili, A, Naviliat-Cuncic, O, Quéméner, G, Paul, S, Pazgalev, AS, Petzoldt, G, Plonka-Spehr, C, Pierre, E, Pignol, G, Rebreyend, D, Roccia, S, Rogel, G, Schmidt-Wellenburg, P, Schnabel, A, Severijns, N, Sobolev, Y, Stoepler, R, Weis, A, Wiehl, N, Zejma, J, Zenner, J & Zsigmond, G 2010, 'An improved measurement of the electric dipole moment of the neutron', Nuclear Physics, Section A, vol. 844, no. 1-4, pp. 47c-52c. https://doi.org/10.1016/j.nuclphysa.2010.05.012

TY - JOUR

T1 - An improved measurement of the electric dipole moment of the neutron

AU - Altarev, I.

AU - Ban, G.

AU - Bison, G.

AU - Bodek, K.

AU - Burghoff, M.

AU - Chowdhuri, Z.

AU - Daum, M.

AU - Düsing, C.

AU - Fertl, M.

AU - Fierlinger, P.

AU - Franke, B.

AU - Grab, C.

AU - Gutsmiedl, E.

AU - Hampel, G.

AU - Heil, W.

AU - Henneck, R.

AU - Horras, M.

AU - Khomutov, N.

AU - Kirch, K.

AU - Kistryn, S.

AU - Knappe-Grüneberg, S.

AU - Knecht, A.

AU - Knowles, P.

AU - Kozela, A.

AU - Kraft, A.

AU - Kuchler, F.

AU - Kratz, J. V.

AU - Lauer, T.

AU - Lauss, B.

AU - Lefort, T.

AU - Lemiere, Y.

AU - Mtchedlishvili, A.

AU - Naviliat-Cuncic, O.

AU - Quéméner, G.

AU - Paul, S.

AU - Pazgalev, A. S.

AU - Petzoldt, G.

AU - Plonka-Spehr, C.

AU - Pierre, E.

AU - Pignol, G.

AU - Rebreyend, D.

AU - Roccia, S.

AU - Rogel, G.

AU - Schmidt-Wellenburg, P.

AU - Schnabel, A.

AU - Severijns, N.

AU - Sobolev, Yu

AU - Stoepler, R.

AU - Weis, A.

AU - Wiehl, N.

AU - Zejma, J.

AU - Zenner, J.

AU - Zsigmond, G.

PY - 2010/11

Y1 - 2010/11

N2 - We describe the status of the new measurement of the neutron electric dipole moment (nEDM) to be performed at the strong source of ultra-cold neutrons at the Paul Scherrer Institut. The experimental technique is based on Ramsey's method of separated oscillatory fields, applied to UCN stored in vacuum in a chamber at room temperature. Our approach is performed in three phases: in phase one, new components have been developed and tested at the Institut Laue-Langevin. Phase two is being performed at PSI, where the apparatus was moved in 2009. Here, together with the optimization of the magnetic environment, the prospective UCN density of ~ 100 cm-3 should enable an improvement of the currently best limit by a factor of five within two years of data taking. In the third phase, a new spectrometer will then gain another order of magnitude in sensitivity. The improvements will be mainly due to (1) much higher UCN intensity, (2) improved magnetometry and magnetic field control, and (3) a double chamber configuration with opposite electric field directions.

AB - We describe the status of the new measurement of the neutron electric dipole moment (nEDM) to be performed at the strong source of ultra-cold neutrons at the Paul Scherrer Institut. The experimental technique is based on Ramsey's method of separated oscillatory fields, applied to UCN stored in vacuum in a chamber at room temperature. Our approach is performed in three phases: in phase one, new components have been developed and tested at the Institut Laue-Langevin. Phase two is being performed at PSI, where the apparatus was moved in 2009. Here, together with the optimization of the magnetic environment, the prospective UCN density of ~ 100 cm-3 should enable an improvement of the currently best limit by a factor of five within two years of data taking. In the third phase, a new spectrometer will then gain another order of magnitude in sensitivity. The improvements will be mainly due to (1) much higher UCN intensity, (2) improved magnetometry and magnetic field control, and (3) a double chamber configuration with opposite electric field directions.

UR - http://www.scopus.com/inward/record.url?scp=77955042835&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2010.05.012

DO - 10.1016/j.nuclphysa.2010.05.012

M3 - Article

AN - SCOPUS:77955042835

SN - 0375-9474

VL - 844

SP - 47c-52c

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 1-4

ER -

An improved measurement of the electric dipole moment of the neutron

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