Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion

S. R. Mirfayzi, A. Alejo, H. Ahmed, L. A. Wilson, S. Ansell, C. Armstrong, N. M. H. Butler, R. J. Clarke, A. Higginson, M. Notley, D. Raspino, D. R. Rusby, M. Borghesi, N. J. Rhodes, P. McKenna, D. Neely, C. M. Brenner, S. Kar

Research output: Contribution to journalArticle

Abstract

An epithermal neutron imager based on detecting alpha particles created by boron neutron capture mechanism is discussed. The diagnostic mainly consists of a mm thick Boron Nitride (BN) sheet (as an alpha converter) in contact with a non-borated cellulose nitride film (LR115 type-II) detector. While the BN absorbs the neutrons below 0.1 eV, the fast neutrons register insignificantly in the detector due to their low neutron capture and recoil cross-sections. The use of solid-state nuclear track detectors (SSNTD), unlike image plates, micro-channel plates and scintillators, provide safeguard from the x-rays, gamma-rays and electrons. The diagnostic was tested on a proof-of-principle basis, in front of a laser driven source of moderated neutrons, which suggests the potential of using this diagnostic (BN+SSNTD) for dosimetry and imaging
applications.

Fingerprint

Neutron
Dosimetry
dosimeters
Neutrons
Nitrides
Imaging
Detector
Laser
Detectors
Imaging techniques
neutrons
boron nitrides
Boron nitride
Lasers
detectors
lasers
Diagnostics
solid state
microchannel plates
Microchannel Plate

Keywords

  • instrumentation
  • neutron sources
  • neutron detectors
  • neutron radiography
  • epithermal neutron imager
  • alpha particles
  • boron neutron capture mechanism
  • dosimetry
  • imaging
  • alpha conversion

Cite this

Mirfayzi, S. R., Alejo, A., Ahmed, H., Wilson, L. A., Ansell, S., Armstrong, C., ... Kar, S. (Accepted/In press). Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion. Journal of Instrumentation.
Mirfayzi, S. R. ; Alejo, A. ; Ahmed, H. ; Wilson, L. A. ; Ansell, S. ; Armstrong, C. ; Butler, N. M. H. ; Clarke, R. J. ; Higginson, A. ; Notley, M. ; Raspino, D. ; Rusby, D. R. ; Borghesi, M. ; Rhodes, N. J. ; McKenna, P. ; Neely, D. ; Brenner, C. M. ; Kar, S. / Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion. In: Journal of Instrumentation. 2016.
@article{0b31f5faaf854229a5de64d78c799632,
title = "Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion",
abstract = "An epithermal neutron imager based on detecting alpha particles created by boron neutron capture mechanism is discussed. The diagnostic mainly consists of a mm thick Boron Nitride (BN) sheet (as an alpha converter) in contact with a non-borated cellulose nitride film (LR115 type-II) detector. While the BN absorbs the neutrons below 0.1 eV, the fast neutrons register insignificantly in the detector due to their low neutron capture and recoil cross-sections. The use of solid-state nuclear track detectors (SSNTD), unlike image plates, micro-channel plates and scintillators, provide safeguard from the x-rays, gamma-rays and electrons. The diagnostic was tested on a proof-of-principle basis, in front of a laser driven source of moderated neutrons, which suggests the potential of using this diagnostic (BN+SSNTD) for dosimetry and imagingapplications.",
keywords = "instrumentation, neutron sources, neutron detectors, neutron radiography, epithermal neutron imager, alpha particles, boron neutron capture mechanism, dosimetry, imaging, alpha conversion",
author = "Mirfayzi, {S. R.} and A. Alejo and H. Ahmed and Wilson, {L. A.} and S. Ansell and C. Armstrong and Butler, {N. M. H.} and Clarke, {R. J.} and A. Higginson and M. Notley and D. Raspino and Rusby, {D. R.} and M. Borghesi and Rhodes, {N. J.} and P. McKenna and D. Neely and Brenner, {C. M.} and S. Kar",
note = "Accepted 12th July 2016",
year = "2016",
month = "7",
day = "12",
language = "English",
journal = "Journal of Instrumentation",
issn = "1748-0221",

}

Mirfayzi, SR, Alejo, A, Ahmed, H, Wilson, LA, Ansell, S, Armstrong, C, Butler, NMH, Clarke, RJ, Higginson, A, Notley, M, Raspino, D, Rusby, DR, Borghesi, M, Rhodes, NJ, McKenna, P, Neely, D, Brenner, CM & Kar, S 2016, 'Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion' Journal of Instrumentation.

Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion. / Mirfayzi, S. R.; Alejo, A.; Ahmed, H.; Wilson, L. A.; Ansell, S.; Armstrong, C.; Butler, N. M. H.; Clarke, R. J.; Higginson, A.; Notley, M.; Raspino, D.; Rusby, D. R. ; Borghesi, M.; Rhodes, N. J.; McKenna, P.; Neely, D.; Brenner, C. M.; Kar, S.

In: Journal of Instrumentation, 12.07.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion

AU - Mirfayzi, S. R.

AU - Alejo, A.

AU - Ahmed, H.

AU - Wilson, L. A.

AU - Ansell, S.

AU - Armstrong, C.

AU - Butler, N. M. H.

AU - Clarke, R. J.

AU - Higginson, A.

AU - Notley, M.

AU - Raspino, D.

AU - Rusby, D. R.

AU - Borghesi, M.

AU - Rhodes, N. J.

AU - McKenna, P.

AU - Neely, D.

AU - Brenner, C. M.

AU - Kar, S.

N1 - Accepted 12th July 2016

PY - 2016/7/12

Y1 - 2016/7/12

N2 - An epithermal neutron imager based on detecting alpha particles created by boron neutron capture mechanism is discussed. The diagnostic mainly consists of a mm thick Boron Nitride (BN) sheet (as an alpha converter) in contact with a non-borated cellulose nitride film (LR115 type-II) detector. While the BN absorbs the neutrons below 0.1 eV, the fast neutrons register insignificantly in the detector due to their low neutron capture and recoil cross-sections. The use of solid-state nuclear track detectors (SSNTD), unlike image plates, micro-channel plates and scintillators, provide safeguard from the x-rays, gamma-rays and electrons. The diagnostic was tested on a proof-of-principle basis, in front of a laser driven source of moderated neutrons, which suggests the potential of using this diagnostic (BN+SSNTD) for dosimetry and imagingapplications.

AB - An epithermal neutron imager based on detecting alpha particles created by boron neutron capture mechanism is discussed. The diagnostic mainly consists of a mm thick Boron Nitride (BN) sheet (as an alpha converter) in contact with a non-borated cellulose nitride film (LR115 type-II) detector. While the BN absorbs the neutrons below 0.1 eV, the fast neutrons register insignificantly in the detector due to their low neutron capture and recoil cross-sections. The use of solid-state nuclear track detectors (SSNTD), unlike image plates, micro-channel plates and scintillators, provide safeguard from the x-rays, gamma-rays and electrons. The diagnostic was tested on a proof-of-principle basis, in front of a laser driven source of moderated neutrons, which suggests the potential of using this diagnostic (BN+SSNTD) for dosimetry and imagingapplications.

KW - instrumentation

KW - neutron sources

KW - neutron detectors

KW - neutron radiography

KW - epithermal neutron imager

KW - alpha particles

KW - boron neutron capture mechanism

KW - dosimetry

KW - imaging

KW - alpha conversion

UR - http://iopscience.iop.org/journal/1748-0221

M3 - Article

JO - Journal of Instrumentation

T2 - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

ER -