Root Causes of Field Emitters in SRF Cavities Placed in CEBAF Tunnel

Conference · Sun May 01 00:00:00 EDT 2016

DOI:https://doi.org/10.18429/JACoW-IPAC2016-THOBB03· OSTI ID:1331991

Geng, Rongli

It has been suspected that appearance of new field emitters can occur in SRF cavities after their placement in accelerator tunnel for long term beam operation. This apparently has been the case for CEBAF. However, no physical evidence has been shown in the past. In this contribution, we will report on the recent results concerning the root cause of field emitters in SRF cavities placed in CEBAF tunnel. We will discuss these results in the context of high-reliability and low-cryogenic-loss operation of CEBAF.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1331991
• Report Number(s): JLAB-ACC-16-2260; DOE/OR/23177-3836
• Resource Relation: Conference: IPAC'16, 08-13 May 2016. Busan, Korea
• Country of Publication: United States
• Language: English