1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Stand-alone operation of the dual-core cryogenic current comparator for FAIR

THPM046
5 Jun 2025, 15:30
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC6.T03 Beam Diagnostics and Instrumentation Thursday Poster Session

Speaker

Thomas Sieber (GSI Helmholtz Centre for Heavy Ion Research)

Description

The Cryogenic Current Comparator (CCC) is a superconducting device for measurement of extremely weak currents with magnetic fields in the range of fT. It uses a Superconducting Quantum Interference Device (SQUID) as an ultrasensitive magnetometer and an elaborated superconducting shield for its protection from external magnetic fields. The system is operated in a helium bath cryostat, which has to fulfill many requirements, such as being non-magnetic, pressure/temperature stable (mK), vibration dampening, UHV fit, bakable, compact and accessible for maintenance and repair.
First operation of a CCC as beam current monitor was achieved in the 90s at GSI. The idea has been updated for measurement of slow extracted beams and exotic ions at FAIR, and since 2014 there has been steady optimization by an international collaboration of expert institutes. Looking at noise figures and current resolution as well as practical applicability and costs, a Dual-Core CCC (DCCC) has turned out as best candidate for FAIR. In parallel to detector development the cryostat has been investigated and improved. It has recently achieved stand-alone operation, which is a main requirement for FAIR.

Funding Agency

Supported by BMBF (German Ministry of Research) under contracts 05P18RDRB1 and 05P18SJRB1

Region represented Europe
Paper preparation format Word

Author

Thomas Sieber (GSI Helmholtz Centre for Heavy Ion Research)

Co-authors

Ghanshyambhai Khatri (European Organization for Nuclear Research) Harald Bräuning (GSI Helmholtz Centre for Heavy Ion Research) Jocelyn Tan (European Organization for Nuclear Research) Lorenzo Crescimbeni (Friedrich Schiller University Jena) Marcus Schwickert (GSI Helmholtz Centre for Heavy Ion Research) Matthias Schmelz (Leibniz Institute of Photonic Technology) Max Stapelfeld (Friedrich Schiller University Jena) Ronny Stolz (Leibniz Institute of Photonic Technology) Thomas Stoehlker (GSI Helmholtz Centre for Heavy Ion Research) Torsten Koettig (European Organization for Nuclear Research) Volker Tympel (Helmholtz Institute Jena) Vyacheslav Zakosarenko (Supracon AG)

Presentation materials

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