Paper 13093-231
Design and performance of the Hitomi/XRISM Adiabatic Demagnetization Refrigerator Controller
19 June 2024 • 17:30 - 19:00 Japan Standard Time | Room G5, North - 1F
Abstract
The Adiabatic Demagnetization Refrigerator Controller (ADRC) in the XRISM Resolve instrument is an electronics box responsible for high-precision sub-K temperature readout and control of the multi-stage adiabatic demagnetization refrigerator subsystem to achieve a thermal stability better than 2.5 uK RMS (over a 10-minute interval) for the calorimeter detectors in both cryogen (liquid helium) and cryo-free modes. It also provides temperature monitoring and heater control for the aperture filters.