CEBAF RF separator system
The 4 GeV CEBAF accelerator at Thomas Jefferson National Accelerator Facility (Jefferson Lab) is arranged in a five-pass racetrack configuration, with two superconducting radio-frequency (SRF) linacs joined by independent magnetic transport arcs. The 1497 MHz continuous electron beam is composed of 3 interlaced variable-intensity 499 MHz beams that can be independently directed from any of the five passes to any of the three experimental halls. Beam extraction is made possible by a system of nine warm sub-harmonic separator cavities capable of delivering a 100 microrad kick to any pass at a maximum machine energy of 6 GeV. Each separator cavity is a half-wavelength, two cell design with a high transverse shunt impedance and a small transverse dimension. The cavities are powered by 1kW solid state amplifiers operating at 499 MHz. Cavity phase and gradient control are provided through a modified version of the same control module used for the CEBAF SRF cavity controls. The system has recently been tested while delivering beam to Hall C. In this paper the authors present a description of the RF separator system and recent test results with beam.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 756683
- Report Number(s):
- DOE/ER/40150-1613; JLAB-ACC-96-18; TRN: US0003228
- Resource Relation:
- Conference: LINAC 96, Geneva (CH), 08/26/1996--08/30/1996; Other Information: PBD: 1 Sep 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
The RF system for the CEBAF polarized photo injector
The CEBAF RF Separator System Upgrade