A cryogenic target for Compton scattering experiments at HI gamma S

作者：Kendellen D P^*; Ahmed M W; Baird E; Feldman G; Perreau N; Wallace P W; Weller H R

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2016, 840: 174-180.

DOI：10.1016/j.nima.2016.10.016

• Cryogenic target
• Liquid helium
• Liquid deuterium
• Compton scattering
• Nucleon polarizabilities

We have developed a cryogenic target for use at the High Intensity gamma-ray Source (HI gamma S). The target system is able to liquefy He-4 at 4 K, hydrogen at 20 K, and deuterium at 23 K to fill a 0.3 L Kapton cell. Liquid temperatures and condenser pressures are recorded throughout each run in order to ensure that the target's areal density is known to similar to 1%. The target is being utilized in a series of experiments which probe the electromagnetic polarizabilities of the nucleon.

• 出版日期2016-12-21