TUZBA1
JLAB, Newport News, Virginia, USA
Over the last 20 years a migration has taken place from analog signal processing to digital signal processing for RF cavity control. The motivation behind the new generation of RF controls is twofold. Some of it can be attributed to the challenging RF control requirements needed for the higher performing cavities and accelerators. Second is the explosive growth of digital communication technology and its applicability to RF cavity control. The flexibility and performance of digital controls has allowed these new accelerators (especially light sources) to meet their requirements. This presentation reviews the historical advances of the technology and the world-wide progress in digital RF system control for linacs, rings, normal conducting and superconducting RF systems.
UW-Madison/SRC, Madison, Wisconsin, USA
JLAB, Newport News, Virginia, USA
The University of Wisconsin has completed fabrication and commissioning of a low frequency (199.6 MHz) superconducting electron gun based on a quarter wave resonator (QWR) cavity. Its concept was optimized to be the source for a CW free electron laser facility. The gun design includes active tuning and a high temperature superconducting solenoid. We will report on the status of the Wisconsin SRF electron gun program, including commissioning experience and first beam measurements.
JLAB, Newport News, Virginia, USA
HZB, Berlin, Germany
JLab, Newport News, Virginia, USA
The Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab is nearing completion of an energy upgrade from 6 to 12 GeV. An integral part of the upgrade is the addition of ten new cryomodules, each consisting of eight seven-cell superconducting radio-frequency (SRF) cavities. An average performance of 100+MV of acceleration per cryomodule is needed to achieve the 12 GeV beam energy goal. The production methodology was for industry to provide and deliver the major components to Jefferson Lab, where they were tested and assembled into cryomodules. The production process begins with an inspection upon receiving of all major components followed by individual performance qualification testing. The SRF cavities received their final chemical processing and cleaning at Jefferson Lab. The qualified components along with all associated hardware and instrumentation are assembled, tested, installed into CEBAF and run through an integrated system checkout in preparation for beam operations. The production process is complete and one of the first completed cryomodules has successfully produced 108 MV of acceleration with a linac beam current of 465 uA.
The U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U.S. Government purposes.