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Title: HYSPEC : A CRYSTAL TIME OF FLIGHT HYBRID SPECTROMETER FOR THE SPALLATION NEUTRON SOURCE.

Abstract

HYSPEC combines time-of-flight spectroscopy with focusing Bragg optics to enhance the flux on small single crystal samples. It will look at a coupled H{sub 2} moderator and will use a 20-25 meter supermirror guide to transport the neutron beam. A counter-rotating chopper pair will monochromate the beam and determine the neutron burst width. A short distance from the chopper pair a vertical focusing crystal is placed in a drum shield that will focus the beam to a 2 cm height, thus maximizing the flux at the sample position. Collimators and beam definers will be placed before and after the sample, which will allow standard sample environment equipment to be used covering a wide range of temperatures and magnetic fields. About 200 He{sup 3} position sensitive detectors will be housed in a moveable detector bank 4.5 m from the sample to cover a horizontal range of 60{sup o} and a vertical range of {+-}7.5{sup o}. HYSPEC can easily be converted to a polarized beam instrument by using a Heusler crystal for a monochromator, and supermirror benders for polarization analysis of the scattered beam. HYSPEC is a moderate resolution instrument optimized for an incident energy range of 5<E{sub 1}<60 meV where itmore » outperforms, in terms of flux on sample, the other inelastic instruments by at least a factor of 2 and up to a factor of 10.« less

Authors:
Publication Date:
Research Org.:
BROOKHAVEN NATIONAL LABORATORY (US)
Sponsoring Org.:
DOE/SC (US)
OSTI Identifier:
15006578
Report Number(s):
BNL-71390-2003-CP
R&D Project: PO10; KC020201; TRN: US0400857
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: 16TH MEETING OF THE INTERNATIONAL COLLABORATION ON ADVANCED NEUTRON SOURCES, DUSSELDORF-NEUSS (DE), 05/12/2003--05/15/2003; Other Information: PBD: 12 May 2003
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; NEUTRON SOURCES; SPALLATION; TIME-OF-FLIGHT SPECTROMETERS; DESIGN

Citation Formats

SHAPIRO,S.M.ZALIZNYAK,I.PASSELL,L.GHOSH,V. HYSPEC : A CRYSTAL TIME OF FLIGHT HYBRID SPECTROMETER FOR THE SPALLATION NEUTRON SOURCE.. United States: N. p., 2003. Web.
SHAPIRO,S.M.ZALIZNYAK,I.PASSELL,L.GHOSH,V. HYSPEC : A CRYSTAL TIME OF FLIGHT HYBRID SPECTROMETER FOR THE SPALLATION NEUTRON SOURCE.. United States.
SHAPIRO,S.M.ZALIZNYAK,I.PASSELL,L.GHOSH,V. 2003. "HYSPEC : A CRYSTAL TIME OF FLIGHT HYBRID SPECTROMETER FOR THE SPALLATION NEUTRON SOURCE.". United States. https://www.osti.gov/servlets/purl/15006578.
@article{osti_15006578,
title = {HYSPEC : A CRYSTAL TIME OF FLIGHT HYBRID SPECTROMETER FOR THE SPALLATION NEUTRON SOURCE.},
author = {SHAPIRO,S.M.ZALIZNYAK,I.PASSELL,L.GHOSH,V.},
abstractNote = {HYSPEC combines time-of-flight spectroscopy with focusing Bragg optics to enhance the flux on small single crystal samples. It will look at a coupled H{sub 2} moderator and will use a 20-25 meter supermirror guide to transport the neutron beam. A counter-rotating chopper pair will monochromate the beam and determine the neutron burst width. A short distance from the chopper pair a vertical focusing crystal is placed in a drum shield that will focus the beam to a 2 cm height, thus maximizing the flux at the sample position. Collimators and beam definers will be placed before and after the sample, which will allow standard sample environment equipment to be used covering a wide range of temperatures and magnetic fields. About 200 He{sup 3} position sensitive detectors will be housed in a moveable detector bank 4.5 m from the sample to cover a horizontal range of 60{sup o} and a vertical range of {+-}7.5{sup o}. HYSPEC can easily be converted to a polarized beam instrument by using a Heusler crystal for a monochromator, and supermirror benders for polarization analysis of the scattered beam. HYSPEC is a moderate resolution instrument optimized for an incident energy range of 5<E{sub 1}<60 meV where it outperforms, in terms of flux on sample, the other inelastic instruments by at least a factor of 2 and up to a factor of 10.},
doi = {},
url = {https://www.osti.gov/biblio/15006578}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon May 12 00:00:00 EDT 2003},
month = {Mon May 12 00:00:00 EDT 2003}
}

Conference:
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