Operational experience with CW high gradient and high QL cryomodules

Conference · Mon Dec 01 04:00:00 EST 2014

OSTI ID:1189922

Hovater, J. Curt ^[1]; Allison, Trent L. ^[1]; Bachimanchi, Ramakrishna ^[1]; Daly, Edward F. ^[1]; Drury, Michael A. ^[1]; Lahti, George E. ^[1]; Mounts, Clyde I. ^[1]; Nelson, Richard M. ^[1]; Plawski, Tomasz E. ^[1]

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1. JLAB

The Continuous Electron Beam Accelerator Facility (CEBAF) energy upgrade from 6 GeV to 12 GeV includes the installation of ten new 100 MV cryomodules (80 cavities). The superconducting RF cavities are designed to operate CW at an accelerating gradient of 19.3 MV/m with a QL of 3×107. The RF system employs single cavity control using new digital LLRF controls and 13 kW klystrons. Recently, all of the new cryomodules and associated RF hardware and software have been commissioned and operated in the CEBAF accelerator. Electrons at linac currents up to 10 ?A have been successfully accelerated and used for nuclear physics experiments. This paper reports on the commissioning and operation of the cryomodules and RF system.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1189922
• Report Number(s): JLAB-ACE-14-1958; DOE/OR/23177-3184
• Country of Publication: United States
• Language: English