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Persistent URL http://purl.org/net/epubs/work/46397561
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Record Id 46397561
Title Operation of a cryogenic current comparator with nanoampere resolution for continuous beam intensity measurements in the antiproton decelerator at CERN
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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.
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Language English (EN)
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Paper In Conference Proceedings In 9th International Particle Accelerator Conference (IPAC2018), Vancouver, Canada, 3 May 2018, (2018). doi:10.18429/JACoW-IPAC2018-THPML044 2018