An Assessment of the Center for Neutron Research at the National Institute of Standards and Technology Fiscal Year 2021 (2022) / Chapter Skim
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3 Adequacy of Instrumentation
3 Adequacy of Instrumentation
Pages 18-25
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From page 18... ...
hosts a suite of 30 neutron beam instruments, of which 17 are neutron scattering instruments operated by NCNR; 11 are imaging, analytical chemistry, and neutron physics instruments operated by the NIST Physical and Materials Measurement Laboratories (MML) ; and 1 is a test station.1 The nSoft Small-Angle Neutron Scattering (SANS)
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From page 19... ...
Challenges and Opportunities The new instrument, combined with the new cold source, will deliver a significant step in performance over the current NSE, which has a successful and growing scientific impact. However, there will still be limitations owing to lower flux compared to reactor-based instruments elsewhere, but a focus on the bioscience areas where the team are world leading will ensure that the upgrade delivers scientifically.
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From page 20... ...
The user program was unfortunately interrupted by the pandemic and unplanned outage, but the team has worked well to ensure that experiments were still performed and that users obtained data. Challenges and Opportunities The closures of the Orphee reactor at the Laboratoire Leon Brillouin (Saclay, France)
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From page 21... ...
The vSANS capabilities are much sought after in the user community and represent an opportunity to enable experiments that cannot be performed elsewhere. BT-8/DARTS UPGRADE Accomplishments The engineering diffractometer has been significantly upgraded, with a new detector, a new multilayer monochromator, new sample strain equipment, and a new sample positioning assembly.
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From page 22... ...
The new instrument will present challenges in data processing and analysis, but there is again an opportunity to learn from similar instruments elsewhere. D2 COLD SOURCE The D2 cold source project will replace liquid hydrogen with liquid deuterium as a moderator to produce cold neutrons.
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From page 23... ...
Challenges and Opportunities The NSF-CHRNS project to deliver time-stamped, and hence time-resolved, data acquisition across the neutron scattering instrument suite presents a significant opportunity for new experiments and new science. The use of time-stamped data recording at a continuous source represents technical challenges in The design and deployment of a new timing network to put all equipment on the same clock; The integration of detector systems and data acquisition systems with the new timing system; and Efficient data storage and data processing.
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From page 24... ...
Key Finding: The long-term impact of 7 years of flat budgets has caused a reduction of NCNR instrument staff by 20 percent, to a level significantly below international standards. Key Conclusion: The reduction of instrument staff, already low by international standards, is reducing capabilities essential for a world-class user facility and reducing NCNR's ability to develop and continuously upgrade cutting-edge instruments, necessary for a very old reactor to increase scientific productivity.
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From page 25... ...
upgrade and the Polarized Large Angle Resolution Spectrometer (PoLAR) secondary continuous-angle multiple energy analysis spectrometer for the Spin Polarized Inelastic Neutron Spectrometer (SPINS)
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