| |
- T. Sieber, L. Crescimbeni, D.M. Haider, M. Schwickert, T. Stöhlker
GSI, Darmstadt, Germany
- D.M. Haider, N. Marsic
TEMF, TU Darmstadt, Darmstadt, Germany
- M. Schmelz, R. Stolz, V. Zakosarenko
IPHT, Jena, Germany
- F. Schmid
FSU Jena, Jena, Germany
- T. Stöhlker
IOQ, Jena, Germany
- T. Stöhlker, V. Tympel
HIJ, Jena, Germany
- J. Tan
CERN, Meyrin, Switzerland
- V. Zakosarenko
Supracon AG, Jena, Germany
|
|
| |
The Cryogenic Current Comparator (CCC) is a SQUID based superconducting device for intensity measurement, firstly proposed as a beam diagnostics instrument in the 90s at GSI. After prove of principle the CCC was introduced into other facilities, attesting great potential for high resolution measurements but at the same time considerable mechanical and cryogenics challenges and costs. In the course of plannings for FAIR the CCC has been revitalized. Systematic investigations started, involving commercially available SQUID systems, which led to improvements of detector and cryostat. The developments resulted in nA spill measurements at GSI (2014) followed by the installation of a CCC in CERN Antiproton Decelerator (AD), which has in the meantime become a key instrument. Since then optimization of the device is ongoing, with respect to various operating conditions, system robustness, current resolution and last but not least system costs. Alternative CCC versions with improved magnetic shielding have been developed as well as ¿Dual Core‘ versions for background noise reduction. We give an overview of CCC optimization and development steps, with focus on applications at GSI and FAIR.
|
|