| Title |
Operation of a Cryogenic Current Comparator with Nanoampere Resolution for Continuous Beam Intensity Measurements in the Antiproton Decelerator at CERN |
| Authors |
- M.F. Fernandes, D. Alves, T. Koettig, A. Lees, J. Tan
CERN, Geneva, Switzerland
- M.F. Fernandes, C.P. Welschpresenter
The University of Liverpool, Liverpool, United Kingdom
- M. Schwickert, T. Stöhlker
GSI, Darmstadt, Germany
- T. Stöhlker
IOQ, Jena, Germany
- C.P. Welschpresenter
Cockcroft Institute, Warrington, Cheshire, United Kingdom
|
| Abstract |
Low-intensity charged particle beams are particularly challenging for non-perturbative beam diagnostics due to the small amplitude of induced electromagnetic fields. The Antiproton Decelerator (AD) and Extra Low ENergy Antiproton (ELENA) rings at CERN decelerate beams containing 10⁷ antiprotons. An absolute intensity measurement of the circulating beam is essential to monitor the operational efficiency and to provide important calibration data for the antimatter experiments. This paper reviews the design of an operational Cryogenic Current Comparator (CCC) based on Superconducting QUantum Interference Device (SQUID) for current and intensity monitoring in the AD. Such a system has been operational throughout 2017, relying on a stand-alone cryogenic infrastructure based on a pulse-tube cryocooler. System performance is presented and correlated with different working environments, confirming a resolution in the nanoampere range.
|
| Funding |
This project has received funding from the European Union's Seventh Framework Programme, under grant agreement number 289485. |
| Paper |
download THPML044.PDF [1.070 MB / 4 pages] |
| Export |
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※ EndNote |
| Conference |
IPAC2018, Vancouver, BC, Canada |
| Series |
International Particle Accelerator Conference (9th) |
| Proceedings |
Link to full IPAC2018 Proccedings |
| Session |
MC3/6/7 Poster Session |
| Date |
03-May-18 16:00–17:30 |
| Main Classification |
06 Beam Instrumentation, Controls, Feedback, and Operational Aspects |
| Sub Classification |
T03 Beam Diagnostics and Instrumentation |
| Keywords |
cryogenics, operation, proton, antiproton, injection |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editors |
Shane Koscielniak (TRIUMF, Vancouver, BC, Canada); Todd Satogata (JLab, Newport News, VA, USA); Volker RW Schaa (GSI, Darmstadt, Germany); Jana Thomson (TRIUMF, Vancouver, BC, Canada) |
| ISBN |
978-3-95450-184-7 |
| Published |
June 2018 |
| Copyright |
|
