4 January 2023 Construction and testing of a common mode choke for cryogenic detector pre-amplifiers
Mathias Richerzhagen, Joshua Hopgood
Author Affiliations +
Abstract

Common-mode choke inductors are useful tools for resolving grounding issues in large detector systems. Using inductive components on cryogenic pre-amplifier boards has so far been prevented by the poor low-temperature performance of common ferrite materials such as NiZn and MnZn. Recently developed nanocrystalline and amorphous ferrite materials promise improved performance up to the point where using magnetics at liquid nitrogen temperatures becomes feasible. This research applies the work of Yin et al. on characterizing ferrite materials by constructing and testing a common mode choke inductor for use on detector pre-amplifiers for the ELT first generation instruments.

© 2023 Society of Photo-Optical Instrumentation Engineers (SPIE)
Mathias Richerzhagen and Joshua Hopgood "Construction and testing of a common mode choke for cryogenic detector pre-amplifiers," Journal of Astronomical Telescopes, Instruments, and Systems 9(1), 010501 (4 January 2023). https://doi.org/10.1117/1.JATIS.9.1.010501
Received: 16 September 2022; Accepted: 21 December 2022; Published: 4 January 2023
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KEYWORDS
Cryogenics

Magnetism

Liquids

Nitrogen

Equipment

Control systems

Network security

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