WG105
BNL, Upton, Long Island, New York, USA
Stony Brook University, Stony Brook, USA
The 704 MHz superconducting RF gun for R&D ERL project is under comissioning at BNL. Since last November, the SRF gun has been conditioned and demonstrated an operational accelerating voltage of 2 MV (an accelerating gradient of 23.5 MV/m). Preparations for the cathode insertion are in final stages and we expect the gun to generate the first electron beam this summer. This paper discusses the BNL SRF gun system, results of the SRF gun commissioning.
WG304
BNL, Upton, Long Island, New York, USA
Stony Brook University, Stony Brook, USA
The R&D ERL project at BNL aims to demonstrate a high charge, high current energy recovery linac (ERL). The R&D ERL includes two superconducting RF systems: a half-cell superconducting RF (SRF) gun and a five-cell superconducting linac cryomodule, both operating at 703.7 MHz. A series of tests of the five-cell superconducting linac cavity has been carried out in the ERL cave in the past 4 years. The cavity is able to achieve 20 MV/m with a Q0 exceeding 1010 in pulse mode but only 12 MV/m in CW mode due to a thermal problem. The SRF gun has been conditioned and demonstrated an operational accelerating voltage of 2 MV (an accelerating gradient of 23.5 MV/m). This paper discusses commissioning of the SRF gun and the five-cell superconducting linac cryomodule, and the experience gained during operations of the superconducting RF system for the high current ERL.