Calibration of a neutron polarimeter

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Bulletin of the American Physical Society

OSTI ID:255536

Niculescu, I; Eden, T; Baker, K ^[1]

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1. and others

We measured the average analyzing power (A{sub y}) and the efficiency of a neutron polarimeter that was designed for use in experiments to measure the electric form factor of the neutron at Bates and CEBAF. The measurements used the {sup 14}C(p, n) {sup 14}N with polarized protons at IUCF. For incident neutron energies of 159.5 and 195 MeV, (A{sub y}) is 0.329{plus_minus}0.006 and 0.300{plus_minus}0.008, respectively; the corresponding efficiencies are 0.16% and 0.28%. With a lead-steel wall, consisting of 10 cm of lead sandwiched between 3.5-cm steel plates, ahead of the polarimeter, the average analyzing power is 0.307{plus_minus}0.008 for 159.5 MeV incident neutrons. This result indicates a small depolarization from the lead-steel wall.

• OSTI ID: 255536
• Report Number(s): CONF-9510116--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 10 Vol. 40; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
66 PHYSICS
CALIBRATION
CARBON 14 TARGET
ELECTROMAGNETIC FORM FACTORS
NEUTRON DETECTORS
NEUTRONS
POLARIMETERS
PROTON REACTIONS