3.5-cell large grain niobium superconducting cavity for a dc superconducting rf photoinjector

被引：12
|
作者：
Quan, Shengwen [1 ]
Zhu, Feng [1 ]
Hao, Jiankui [1 ]
Lu, Xiangyang [1 ]
Zhang, Baocheng [1 ]
Xu, Wencan [1 ]
Zhao, Kui [1 ]
机构：
[1] Peking Univ, Inst Heavy Ion Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
来源：
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2010年 / 13卷 / 04期
关键词：
PEKING-UNIVERSITY;
D O I：
10.1103/PhysRevSTAB.13.042001
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We have developed a new compact high average current dc superconducting rf (DC-SRF) photoinjector. A 3.5-cell superconducting cavity with a mid-beta structure is the key component of the DC-SRF photoinjector. Herein, we present the new design, fabrication, and vertical test results of the 3.5-cell large grain niobium superconducting cavity. After preliminary surface preparation and room temperature rf measurements, the cavity was sent to Jefferson Lab for a vertical cold test. The gradient of the cavity reaches 23: 5 MV/m, and the Q(0) value is higher than 1: 2 x 10(10). The high-quality 3.5-cell cavity will guarantee the good performance of the DC-SRF photoinjector.
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页数：5
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