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Projection imaging with ultracold neutrons

Authors :
M. Blatnik
L. Hayen
E.M. Fries
Steven Clayton
C.-Y. Liu
Kevin Hickerson
Alexander Saunders
N. B. Callahan
T. Bailey
C.R. Chavez
Mark Makela
J. Wexler
C. Cude-Woods
Leah Broussard
E. J. Ramberg
D.J. Salvat
R. W. Pattie
F. Gonzalez
S.E. Holland
Zhehui Wang
Scott Currie
R. Musedinovic
Zhaowen Tang
J.H. Choi
K. Kuk
P. Geltenbort
E. I. Sharapov
C. O'Shaughnessy
B. Plaster
A. R. Young
A. T. Holley
Juan Estrada
M. T. Hassan
Wanchun Wei
Petra Merkel
B. W. Filippone
Christopher Morris
E.R. Adamek
X. Sun
M. A. P. Brown
Mark A. Hoffbauer
Takeyasu M. Ito
Source :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1003:165306
Publication Year :
2021
Publisher :
Elsevier BV, 2021.

Abstract

Ultracold neutron (UCN) projection imaging is demonstrated using a boron-coated back-illuminated CCD camera and the Los Alamos UCN source. Each neutron is recorded through the capture reactions with 10B. By direct detection at least one of the byproducts α , 7Li and γ (electron recoils) derived from the neutron capture and reduction of thermal noise of the scientific CCD camera, a signal-to-noise improvement on the order of 1 0 4 over the indirect detection has been achieved. Sub-pixel position resolution of a few microns is confirmed for individual UCN events. Projection imaging of test objects shows a spatial resolution less than 100 μ m by an integrated UCN flux one the order of 10 6 cm−2. The bCCD can be used to build UCN detectors with an area on the order of 1 m 2 . The combination of micrometer scale spatial resolution, low readout noise of a few electrons, and large area makes bCCD suitable for quantum science of UCN.

Details

ISSN :
01689002
Volume :
1003
Database :
OpenAIRE
Journal :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Accession number :
edsair.doi.dedup.....163fa3201468a65e011079cd4df63f9f