In situ SEOP polarised 3He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments

S. Boag; E. Babcock; K. H. Andersen; M. Becker; T. R. Charlton; W. C. Chen; R. M. Dalgliesh; S. D. Elmore; C. D. Frost; T. R. Gentile; R. Lopez Anton; S. R. Parnell; A. K. Petoukhov; M. W.A. Skoda; T. Soldner

doi:10.1016/j.physb.2009.06.039

In situ SEOP polarised ³He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments

S. Boag, E. Babcock, K. H. Andersen, M. Becker, T. R. Charlton, W. C. Chen, R. M. Dalgliesh, S. D. Elmore, C. D. Frost, T. R. Gentile, R. Lopez Anton, S. R. Parnell, A. K. Petoukhov, M. W.A. Skoda, T. Soldner

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

We discuss the development and characterisation of a new in situ spin exchange optical pumping (SEOP) based ³He neutron spin filter polarisation device. We present results from a recent test of the prototype system developed with the Institut Laue-Langevin. The polariser was installed on the polarised reflectometer CRISP at ISIS in the analyser position. The ³He was pumped continuously in situ on the beamline. The system also integrated a ³He adiabatic fast passage spin flipper that allowed reversal of the ³He and therefore neutron polarisation state, allowing for measurement of all four polarisation cross-sections. The system was run for a number of days reaching a ³He polarisation of 63%.

Original language	English
Pages (from-to)	2659-2662
Number of pages	4
Journal	Physica B: Physics of Condensed Matter
Volume	404
Issue number	17
DOIs	https://doi.org/10.1016/j.physb.2009.06.039
State	Published - Sep 1 2009
Externally published	Yes

Funding

The authors would like to thank the ILL 3 He and ISIS user support groups for their technical assistance, A. Wildes for supplying the Fe– 58 Fe sample, Professor S. Langridge for his invaluable assistance during the CRISP experiment and Prof. T. Chupp for his fruitful discussions and assistance during the PF1b experiment. This work has been supported by the ILL Millennium Programme and the European Commission under the Sixth Framework Programme through the Key Action: Strengthening the European Research Area, Research Infrastructures. Contract no. RII3-CT-2003-505925.

Keywords

In situ pumping
Neutron spin filter
Polarised neutrons

Access to Document

10.1016/j.physb.2009.06.039

Cite this

Boag, S., Babcock, E., Andersen, K. H., Becker, M., Charlton, T. R., Chen, W. C., Dalgliesh, R. M., Elmore, S. D., Frost, C. D., Gentile, T. R., Lopez Anton, R., Parnell, S. R., Petoukhov, A. K., Skoda, M. W. A., & Soldner, T. (2009). In situ SEOP polarised ³He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments. Physica B: Physics of Condensed Matter, 404(17), 2659-2662. https://doi.org/10.1016/j.physb.2009.06.039

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title = "In situ SEOP polarised 3He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments",

abstract = "We discuss the development and characterisation of a new in situ spin exchange optical pumping (SEOP) based 3He neutron spin filter polarisation device. We present results from a recent test of the prototype system developed with the Institut Laue-Langevin. The polariser was installed on the polarised reflectometer CRISP at ISIS in the analyser position. The 3He was pumped continuously in situ on the beamline. The system also integrated a 3He adiabatic fast passage spin flipper that allowed reversal of the 3He and therefore neutron polarisation state, allowing for measurement of all four polarisation cross-sections. The system was run for a number of days reaching a 3He polarisation of 63%.",

keywords = "In situ pumping, Neutron spin filter, Polarised neutrons",

author = "S. Boag and E. Babcock and Andersen, {K. H.} and M. Becker and Charlton, {T. R.} and Chen, {W. C.} and Dalgliesh, {R. M.} and Elmore, {S. D.} and Frost, {C. D.} and Gentile, {T. R.} and {Lopez Anton}, R. and Parnell, {S. R.} and Petoukhov, {A. K.} and Skoda, {M. W.A.} and T. Soldner",

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Boag, S, Babcock, E, Andersen, KH, Becker, M, Charlton, TR, Chen, WC, Dalgliesh, RM, Elmore, SD, Frost, CD, Gentile, TR, Lopez Anton, R, Parnell, SR, Petoukhov, AK, Skoda, MWA & Soldner, T 2009, 'In situ SEOP polarised ³He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments', Physica B: Physics of Condensed Matter, vol. 404, no. 17, pp. 2659-2662. https://doi.org/10.1016/j.physb.2009.06.039

TY - JOUR

T1 - In situ SEOP polarised 3He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments

AU - Boag, S.

AU - Babcock, E.

AU - Andersen, K. H.

AU - Becker, M.

AU - Charlton, T. R.

AU - Chen, W. C.

AU - Dalgliesh, R. M.

AU - Elmore, S. D.

AU - Frost, C. D.

AU - Gentile, T. R.

AU - Lopez Anton, R.

AU - Parnell, S. R.

AU - Petoukhov, A. K.

AU - Skoda, M. W.A.

AU - Soldner, T.

PY - 2009/9/1

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N2 - We discuss the development and characterisation of a new in situ spin exchange optical pumping (SEOP) based 3He neutron spin filter polarisation device. We present results from a recent test of the prototype system developed with the Institut Laue-Langevin. The polariser was installed on the polarised reflectometer CRISP at ISIS in the analyser position. The 3He was pumped continuously in situ on the beamline. The system also integrated a 3He adiabatic fast passage spin flipper that allowed reversal of the 3He and therefore neutron polarisation state, allowing for measurement of all four polarisation cross-sections. The system was run for a number of days reaching a 3He polarisation of 63%.

AB - We discuss the development and characterisation of a new in situ spin exchange optical pumping (SEOP) based 3He neutron spin filter polarisation device. We present results from a recent test of the prototype system developed with the Institut Laue-Langevin. The polariser was installed on the polarised reflectometer CRISP at ISIS in the analyser position. The 3He was pumped continuously in situ on the beamline. The system also integrated a 3He adiabatic fast passage spin flipper that allowed reversal of the 3He and therefore neutron polarisation state, allowing for measurement of all four polarisation cross-sections. The system was run for a number of days reaching a 3He polarisation of 63%.

KW - In situ pumping

KW - Neutron spin filter

KW - Polarised neutrons

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