K J Coakley et al 2003 Meas. Sci. Technol. 14 131 doi:10.1088/0957-0233/14/1/319
Estimation of neutron mean wavelength from rocking curve data*
K J Coakley1, Z Chowdhuri2, W M Snow2, J M Richardson3 and M S Dewey4
Show affiliationsAt NIST, an in-beam neutron lifetime experiment is underway. In part of the experiment, a neutron detector is calibrated. The accuracy of the detector calibration depends, in part, on how accurately the mean wavelength of a neutron beam can be estimated from rocking curve data. Based on a stochastic model for neutron scattering, we simulate rocking curve data. To speed up the simulation, an importance sampling method is used. For the cases studied, importance sampling reduces the execution time of the simulation code by over a factor of 500. For simulated data, the statistical bias of the mean wavelength estimate is found to be 0.004%.
- Footnote
- PACS
- MSC
- Subjects
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Accelerators, beams and electromagnetism
Instrumentation and measurement
- Dates
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Issue 1 (January 2003)
Received 18 July 2002, accepted for publication 21 November 2002, in final form 25 October 2002
Published 17 December 2002
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Estimation of neutron mean wavelength from rocking curve data
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