Abstract
A prototype device capable of moving a radioactive calibration source to multiple positions was operated at millikelvin temperatures using a modified commercial stepper motor. It was developed as an in-situ calibration strategy for cryogenic dark matter detectors. Data taken by scanning a calibration source across multiple radial positions of a prototype dark matter detector demonstrated its functionality. Construction, heat load, and operation of the device are discussed, as is the effect of the motor on the detector operation. A sample dataset taken over multiple positions of a SuperCDMS detector is presented as an example of the utility of such a device.
Original language | English (US) |
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Article number | 164070 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 971 |
DOIs | |
State | Published - Aug 11 2020 |
Bibliographical note
Publisher Copyright:© 2020 Elsevier B.V.
Keywords
- Calibration
- Cryogenic
- Germanium
- Ionization
- Phonon
- Stepper motor