Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method

R. W. Pattie; E. R. Adamek; T. Brenner; A. Brandt; L. J. Broussard; N. B. Callahan; S. M. Clayton; C. Cude-Woods; S. A. Currie; P. Geltenbort; T. M. Ito; T. Lauer; C. Y. Liu; J. Majewski; M. Makela; Y. Masuda; C. L. Morris; J. C. Ramsey; D. J. Salvat; A. Saunders; J. Schroffenegger; Z. Tang; W. Wei; Z. Wang; E. Watkins; A. R. Young; B. A. Zeck

doi:10.1016/j.nima.2017.07.051

Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method

R. W. Pattie, E. R. Adamek, T. Brenner, A. Brandt, L. J. Broussard, N. B. Callahan, S. M. Clayton, C. Cude-Woods, S. A. Currie, P. Geltenbort, T. M. Ito, T. Lauer, C. Y. Liu, J. Majewski, M. Makela, Y. Masuda, C. L. Morris, J. C. Ramsey, D. J. Salvat, A. SaundersJ. Schroffenegger, Z. Tang, W. Wei, Z. Wang, E. Watkins, A. R. Young, B. A. Zeck

Neutron Symmetries

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Abstract

We report on the evaluation of commercial electroless nickel phosphorus (NiP) coatings for ultracold neutron (UCN) transport and storage. The material potential of 50μm thick NiP coatings on stainless steel and aluminum substrates was measured to be V_F=213(5.2) neV using the time-of-flight spectrometer ASTERIX at the Lujan Center. The loss per bounce probability was measured in pinhole bottling experiments carried out at ultracold neutron sources at Los Alamos Neutron Science Center and the Institut Laue-Langevin. For these tests a new guide coupling design was used to minimize gaps between the guide sections. The observed UCN loss in the bottle was interpreted in terms of an energy independent effective loss per bounce, which is the appropriate model when gaps in the system and upscattering are the dominate loss mechanisms, yielding a loss per bounce of 1.3(1)×10⁻⁴. We also present a detailed discussion of the pinhole bottling methodology and an energy dependent analysis of the experimental results.

Original language	English
Pages (from-to)	64-73
Number of pages	10
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	872
DOIs	https://doi.org/10.1016/j.nima.2017.07.051
State	Published - Nov 11 2017

Funding

This work was supported by the Los Alamos National Laboratory LDRD office ( DR-20140015DR ), the Department of Energy ( DE-FG02-97ER41042 ,), and the National Science Foundation ( 1307426 ) and is covered by LA-UR-17-20247. These measurements would not have been possible without the effort of the LANSCE accelerator staff and the ILL reactor crew.

Keywords

Neutron guide coating
Ultracold neutron

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10.1016/j.nima.2017.07.051

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Pattie, R. W., Adamek, E. R., Brenner, T., Brandt, A., Broussard, L. J., Callahan, N. B., Clayton, S. M., Cude-Woods, C., Currie, S. A., Geltenbort, P., Ito, T. M., Lauer, T., Liu, C. Y., Majewski, J., Makela, M., Masuda, Y., Morris, C. L., Ramsey, J. C., Salvat, D. J., ... Zeck, B. A. (2017). Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 872, 64-73. https://doi.org/10.1016/j.nima.2017.07.051

@article{d5b8915e66054b90b90033181f5dfe02,

title = "Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method",

abstract = "We report on the evaluation of commercial electroless nickel phosphorus (NiP) coatings for ultracold neutron (UCN) transport and storage. The material potential of 50μm thick NiP coatings on stainless steel and aluminum substrates was measured to be VF=213(5.2) neV using the time-of-flight spectrometer ASTERIX at the Lujan Center. The loss per bounce probability was measured in pinhole bottling experiments carried out at ultracold neutron sources at Los Alamos Neutron Science Center and the Institut Laue-Langevin. For these tests a new guide coupling design was used to minimize gaps between the guide sections. The observed UCN loss in the bottle was interpreted in terms of an energy independent effective loss per bounce, which is the appropriate model when gaps in the system and upscattering are the dominate loss mechanisms, yielding a loss per bounce of 1.3(1)×10−4. We also present a detailed discussion of the pinhole bottling methodology and an energy dependent analysis of the experimental results.",

keywords = "Neutron guide coating, Ultracold neutron",

author = "Pattie, {R. W.} and Adamek, {E. R.} and T. Brenner and A. Brandt and Broussard, {L. J.} and Callahan, {N. B.} and Clayton, {S. M.} and C. Cude-Woods and Currie, {S. A.} and P. Geltenbort and Ito, {T. M.} and T. Lauer and Liu, {C. Y.} and J. Majewski and M. Makela and Y. Masuda and Morris, {C. L.} and Ramsey, {J. C.} and Salvat, {D. J.} and A. Saunders and J. Schroffenegger and Z. Tang and W. Wei and Z. Wang and E. Watkins and Young, {A. R.} and Zeck, {B. A.}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = nov,

day = "11",

doi = "10.1016/j.nima.2017.07.051",

language = "English",

volume = "872",

pages = "64--73",

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

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Pattie, RW, Adamek, ER, Brenner, T, Brandt, A, Broussard, LJ, Callahan, NB, Clayton, SM, Cude-Woods, C, Currie, SA, Geltenbort, P, Ito, TM, Lauer, T, Liu, CY, Majewski, J, Makela, M, Masuda, Y, Morris, CL, Ramsey, JC, Salvat, DJ, Saunders, A, Schroffenegger, J, Tang, Z, Wei, W, Wang, Z, Watkins, E, Young, AR & Zeck, BA 2017, 'Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 872, pp. 64-73. https://doi.org/10.1016/j.nima.2017.07.051

Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method. / Pattie, R. W.; Adamek, E. R.; Brenner, T. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 872, 11.11.2017, p. 64-73.

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

TY - JOUR

T1 - Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method

AU - Pattie, R. W.

AU - Adamek, E. R.

AU - Brenner, T.

AU - Brandt, A.

AU - Broussard, L. J.

AU - Callahan, N. B.

AU - Clayton, S. M.

AU - Cude-Woods, C.

AU - Currie, S. A.

AU - Geltenbort, P.

AU - Ito, T. M.

AU - Lauer, T.

AU - Liu, C. Y.

AU - Majewski, J.

AU - Makela, M.

AU - Masuda, Y.

AU - Morris, C. L.

AU - Ramsey, J. C.

AU - Salvat, D. J.

AU - Saunders, A.

AU - Schroffenegger, J.

AU - Tang, Z.

AU - Wei, W.

AU - Wang, Z.

AU - Watkins, E.

AU - Young, A. R.

AU - Zeck, B. A.

PY - 2017/11/11

Y1 - 2017/11/11

N2 - We report on the evaluation of commercial electroless nickel phosphorus (NiP) coatings for ultracold neutron (UCN) transport and storage. The material potential of 50μm thick NiP coatings on stainless steel and aluminum substrates was measured to be VF=213(5.2) neV using the time-of-flight spectrometer ASTERIX at the Lujan Center. The loss per bounce probability was measured in pinhole bottling experiments carried out at ultracold neutron sources at Los Alamos Neutron Science Center and the Institut Laue-Langevin. For these tests a new guide coupling design was used to minimize gaps between the guide sections. The observed UCN loss in the bottle was interpreted in terms of an energy independent effective loss per bounce, which is the appropriate model when gaps in the system and upscattering are the dominate loss mechanisms, yielding a loss per bounce of 1.3(1)×10−4. We also present a detailed discussion of the pinhole bottling methodology and an energy dependent analysis of the experimental results.

AB - We report on the evaluation of commercial electroless nickel phosphorus (NiP) coatings for ultracold neutron (UCN) transport and storage. The material potential of 50μm thick NiP coatings on stainless steel and aluminum substrates was measured to be VF=213(5.2) neV using the time-of-flight spectrometer ASTERIX at the Lujan Center. The loss per bounce probability was measured in pinhole bottling experiments carried out at ultracold neutron sources at Los Alamos Neutron Science Center and the Institut Laue-Langevin. For these tests a new guide coupling design was used to minimize gaps between the guide sections. The observed UCN loss in the bottle was interpreted in terms of an energy independent effective loss per bounce, which is the appropriate model when gaps in the system and upscattering are the dominate loss mechanisms, yielding a loss per bounce of 1.3(1)×10−4. We also present a detailed discussion of the pinhole bottling methodology and an energy dependent analysis of the experimental results.

KW - Neutron guide coating

KW - Ultracold neutron

UR - http://www.scopus.com/inward/record.url?scp=85027863226&partnerID=8YFLogxK

U2 - 10.1016/j.nima.2017.07.051

DO - 10.1016/j.nima.2017.07.051

M3 - Article

AN - SCOPUS:85027863226

SN - 0168-9002

VL - 872

SP - 64

EP - 73

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

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

ER -

Pattie RW, Adamek ER, Brenner T, Brandt A, Broussard LJ, Callahan NB et al. Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2017 Nov 11;872:64-73. doi: 10.1016/j.nima.2017.07.051

Evaluation of commercial nickel–phosphorus coating for ultracold neutron guides using a pinhole bottling method

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