Performance of the prototype LANL solid deuterium ultra-cold neutron source

Roger E. Hill; J. M. Anaya; T. J. Bowles; G. L. Greene; G. Hogan; S. Lamoreaux; L. Marek; R. Mortenson; C. L. Morris; A. Saunders; S. J. Seestrom; W. Teasdale; S. Hoedl; C. Y. Liu; D. A. Smith; A. Young; B. W. Filippone; J. Hua; T. Ito; E. Pasyuk; P. Geltenbort; A. Garcia; B. Fujikawa; S. Baessler; A. Serebrov

doi:10.1016/S0168-9002(99)01060-8

Performance of the prototype LANL solid deuterium ultra-cold neutron source

Roger E. Hill
, J. M. Anaya
, T. J. Bowles
, G. L. Greene
, G. Hogan
, S. Lamoreaux
, L. Marek
, R. Mortenson
, C. L. Morris
, A. Saunders
, S. J. Seestrom
, W. Teasdale
, S. Hoedl
, C. Y. Liu
, D. A. Smith
, A. Young
, B. W. Filippone
, J. Hua
, T. Ito
, E. Pasyuk

P. Geltenbort, A. Garcia, B. Fujikawa, S. Baessler, A. Serebrov

Research output: Contribution to journal › Conference article › peer-review

14 Scopus citations

Abstract

A prototype of a solid deuterium (SD₂) source of Ultra-Cold Neutrons (UCN) is currently being tested at LANSCE. The source is contained within an assembly consisting of a 4 K polyethylene moderator surrounded by a 77 K beryllium flux trap in which is embedded a spallation target. Time-of-flight measurements have been made of the cold neutron spectrum emerging directly from the flux trap assembly. A comparison is presented of these measurements with results of Monte Carlo (LAHET/MCNP) calculations of the cold neutron fluxes produced in the prototype assembly by a beam of 800 MeV protons incident on the tungsten target. A UCN detector was coupled to the assembly through a guide system with a critical velocity of 8 m/s (⁵⁸Ni). The rates and time-of-flight data from this detector are compared with calculated values. Measurements of UCN production as a function of SD₂ volume (thickness) are compared with predicted values. The dependence of UCN production on SD₂ temperature and proton beam intensity are also presented.

Original language	English
Pages (from-to)	674-681
Number of pages	8
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	440
Issue number	3
DOIs	https://doi.org/10.1016/S0168-9002(99)01060-8
State	Published - Jun 2000
Externally published	Yes
Event	The International Workshop on 'Particle Physics with Slow Neutrons' - Grenoble, France Duration: Oct 22 1998 → Oct 24 1998

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10.1016/S0168-9002(99)01060-8

Cite this

Hill, R. E., Anaya, J. M., Bowles, T. J., Greene, G. L., Hogan, G., Lamoreaux, S., Marek, L., Mortenson, R., Morris, C. L., Saunders, A., Seestrom, S. J., Teasdale, W., Hoedl, S., Liu, C. Y., Smith, D. A., Young, A., Filippone, B. W., Hua, J., Ito, T., ... Serebrov, A. (2000). Performance of the prototype LANL solid deuterium ultra-cold neutron source. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 440(3), 674-681. https://doi.org/10.1016/S0168-9002(99)01060-8

@article{977b984a41f6462eb99c6c9ddab2aada,

title = "Performance of the prototype LANL solid deuterium ultra-cold neutron source",

abstract = "A prototype of a solid deuterium (SD2) source of Ultra-Cold Neutrons (UCN) is currently being tested at LANSCE. The source is contained within an assembly consisting of a 4 K polyethylene moderator surrounded by a 77 K beryllium flux trap in which is embedded a spallation target. Time-of-flight measurements have been made of the cold neutron spectrum emerging directly from the flux trap assembly. A comparison is presented of these measurements with results of Monte Carlo (LAHET/MCNP) calculations of the cold neutron fluxes produced in the prototype assembly by a beam of 800 MeV protons incident on the tungsten target. A UCN detector was coupled to the assembly through a guide system with a critical velocity of 8 m/s (58Ni). The rates and time-of-flight data from this detector are compared with calculated values. Measurements of UCN production as a function of SD2 volume (thickness) are compared with predicted values. The dependence of UCN production on SD2 temperature and proton beam intensity are also presented.",

author = "Hill, \{Roger E.\} and Anaya, \{J. M.\} and Bowles, \{T. J.\} and Greene, \{G. L.\} and G. Hogan and S. Lamoreaux and L. Marek and R. Mortenson and Morris, \{C. L.\} and A. Saunders and Seestrom, \{S. J.\} and W. Teasdale and S. Hoedl and Liu, \{C. Y.\} and Smith, \{D. A.\} and A. Young and Filippone, \{B. W.\} and J. Hua and T. Ito and E. Pasyuk and P. Geltenbort and A. Garcia and B. Fujikawa and S. Baessler and A. Serebrov",

year = "2000",

month = jun,

doi = "10.1016/S0168-9002(99)01060-8",

language = "English",

volume = "440",

pages = "674--681",

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

issn = "0168-9002",

publisher = "Elsevier",

number = "3",

note = "The International Workshop on 'Particle Physics with Slow Neutrons' ; Conference date: 22-10-1998 Through 24-10-1998",

}

Hill, RE, Anaya, JM, Bowles, TJ, Greene, GL, Hogan, G, Lamoreaux, S, Marek, L, Mortenson, R, Morris, CL, Saunders, A, Seestrom, SJ, Teasdale, W, Hoedl, S, Liu, CY, Smith, DA, Young, A, Filippone, BW, Hua, J, Ito, T, Pasyuk, E, Geltenbort, P, Garcia, A, Fujikawa, B, Baessler, S & Serebrov, A 2000, 'Performance of the prototype LANL solid deuterium ultra-cold neutron source', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 440, no. 3, pp. 674-681. https://doi.org/10.1016/S0168-9002(99)01060-8

Performance of the prototype LANL solid deuterium ultra-cold neutron source. / Hill, Roger E.; Anaya, J. M.; Bowles, T. J. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 440, No. 3, 06.2000, p. 674-681.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

T1 - Performance of the prototype LANL solid deuterium ultra-cold neutron source

AU - Hill, Roger E.

AU - Anaya, J. M.

AU - Bowles, T. J.

AU - Greene, G. L.

AU - Hogan, G.

AU - Lamoreaux, S.

AU - Marek, L.

AU - Mortenson, R.

AU - Morris, C. L.

AU - Saunders, A.

AU - Seestrom, S. J.

AU - Teasdale, W.

AU - Hoedl, S.

AU - Liu, C. Y.

AU - Smith, D. A.

AU - Young, A.

AU - Filippone, B. W.

AU - Hua, J.

AU - Ito, T.

AU - Pasyuk, E.

AU - Geltenbort, P.

AU - Garcia, A.

AU - Fujikawa, B.

AU - Baessler, S.

AU - Serebrov, A.

PY - 2000/6

Y1 - 2000/6

N2 - A prototype of a solid deuterium (SD2) source of Ultra-Cold Neutrons (UCN) is currently being tested at LANSCE. The source is contained within an assembly consisting of a 4 K polyethylene moderator surrounded by a 77 K beryllium flux trap in which is embedded a spallation target. Time-of-flight measurements have been made of the cold neutron spectrum emerging directly from the flux trap assembly. A comparison is presented of these measurements with results of Monte Carlo (LAHET/MCNP) calculations of the cold neutron fluxes produced in the prototype assembly by a beam of 800 MeV protons incident on the tungsten target. A UCN detector was coupled to the assembly through a guide system with a critical velocity of 8 m/s (58Ni). The rates and time-of-flight data from this detector are compared with calculated values. Measurements of UCN production as a function of SD2 volume (thickness) are compared with predicted values. The dependence of UCN production on SD2 temperature and proton beam intensity are also presented.

AB - A prototype of a solid deuterium (SD2) source of Ultra-Cold Neutrons (UCN) is currently being tested at LANSCE. The source is contained within an assembly consisting of a 4 K polyethylene moderator surrounded by a 77 K beryllium flux trap in which is embedded a spallation target. Time-of-flight measurements have been made of the cold neutron spectrum emerging directly from the flux trap assembly. A comparison is presented of these measurements with results of Monte Carlo (LAHET/MCNP) calculations of the cold neutron fluxes produced in the prototype assembly by a beam of 800 MeV protons incident on the tungsten target. A UCN detector was coupled to the assembly through a guide system with a critical velocity of 8 m/s (58Ni). The rates and time-of-flight data from this detector are compared with calculated values. Measurements of UCN production as a function of SD2 volume (thickness) are compared with predicted values. The dependence of UCN production on SD2 temperature and proton beam intensity are also presented.

UR - https://www.scopus.com/pages/publications/0033895028

U2 - 10.1016/S0168-9002(99)01060-8

DO - 10.1016/S0168-9002(99)01060-8

M3 - Conference article

AN - SCOPUS:0033895028

SN - 0168-9002

VL - 440

SP - 674

EP - 681

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

IS - 3

T2 - The International Workshop on 'Particle Physics with Slow Neutrons'

Y2 - 22 October 1998 through 24 October 1998

ER -

Performance of the prototype LANL solid deuterium ultra-cold neutron source

Abstract

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