The National Science Foundation (NSF) and National Institute of Standards and Technology (NIST) have developed a comprehensive guide to neutron spin filter (NSF) equipment, categorizing them into four main types based on their design and functionality. The guide aims to assist researchers in selecting the most appropriate equipment for their specific experiments.
1. Shielded Solenoids: These devices consist of an inner aluminum cylinder wound with copper wire, producing a uniform magnetic field around the NSF. They incorporate an adiabatic spin inversion sleeve and are used at various instruments, including SANS, TRIPLE AXIS, and CANDOR.
2. End-Compensated “Magic” Boxes: These devices feature an inner aluminum frame with copper and mumetal winding, producing a uniform magnetic field around the NSF. They incorporate an adiabatic spin inversion box and are primarily used on the TRIPLE AXIS instrument before the sample.
3. Unshielded Solenoids: These devices consist of a cylindrical aluminum body with Teflon-coated wire, producing a uniform magnetic field around the NSF. They are used solely on the MACS instrument, enclosing the polarizer, analyzer(s), and sample, including sample environment equipment.
4. Electromagnets and Coils: These devices include electromagnets (high field) and apparatuses (low field) used to apply a sample field. They are primarily used at 30m SANS and VSANS.
The guide provides general parameters for each type of NSF equipment, helping researchers make informed decisions when planning their experiments.
Source: https://www.nist.gov/ncnr/spin-filters/spin-filter-info/nsf-devicesequipment
Keywords: Magnetic Field, Neutron Spin Filter, Uniform, Magnetic, Field
