TY - JOUR
T1 - Fast Monte Carlo simulation of a dispersive sample on the SEQUOIA spectrometer at the SNS
AU - Granroth, Garrett E.
AU - Chen, Meili
AU - Kohl, James A.
AU - Hagen, Mark E.
AU - Cobb, John W.
PY - 2007
Y1 - 2007
N2 - Simulation of an inelastic scattering experiment, with a sample and a large pixilated detector, usually requires days of time because of finite processor speeds. We report simulations on an spallation neutron source (SNS) instrument, SEQUOIA, that reduce the time to less than 2 h by using parallelization and the resources of the TeraGrid. SEQUOIA is a fine resolution (ΔE/Ei ∼ 1%) chopper spectrometer under construction at the SNS. It utilizes incident energies from Ei = 20 meV-2 eV and will have ∼ 144,000 detector pixels covering 1.6 Sr of solid angle. The full spectrometer, including a 1-D dispersive sample, has been simulated using the Monte Carlo package McStas. This paper summarizes the method of parallelization for and results from these simulations. In addition, limitations of and proposed improvements to current analysis software will be discussed.
AB - Simulation of an inelastic scattering experiment, with a sample and a large pixilated detector, usually requires days of time because of finite processor speeds. We report simulations on an spallation neutron source (SNS) instrument, SEQUOIA, that reduce the time to less than 2 h by using parallelization and the resources of the TeraGrid. SEQUOIA is a fine resolution (ΔE/Ei ∼ 1%) chopper spectrometer under construction at the SNS. It utilizes incident energies from Ei = 20 meV-2 eV and will have ∼ 144,000 detector pixels covering 1.6 Sr of solid angle. The full spectrometer, including a 1-D dispersive sample, has been simulated using the Monte Carlo package McStas. This paper summarizes the method of parallelization for and results from these simulations. In addition, limitations of and proposed improvements to current analysis software will be discussed.
KW - Monte Carlo simulation
KW - Neutron instrumentation
KW - Neutron spectroscopy
KW - Parallel computing
UR - http://www.scopus.com/inward/record.url?scp=85013607846&partnerID=8YFLogxK
U2 - 10.1080/10238160601046092
DO - 10.1080/10238160601046092
M3 - Article
AN - SCOPUS:85013607846
SN - 1023-8166
VL - 15
SP - 91
EP - 94
JO - Journal of Neutron Research
JF - Journal of Neutron Research
IS - 1
ER -