QUENCH STUDIES AND PREHEATING ANALYSIS OF SEAMLESS

Conference · Sun Sep 01 00:00:00 EDT 2013

OSTI ID:1164410

Palczewski, Ari ^[1]; Geng, Rongli ^[1]; Eremeev, Grigory ^[1]

---

1. JLAB

One of the alternative manufacturing technologies for SRF cavities is hydroforming from seamless tubes. Although this technology has produced cavities with gradient and Q-values comparable to standard EBW/EP cavities, a few questions remain. One of these questions is whether the quench mechanism in hydroformed cavities is the same as in standard electron beam welded cavities. Towards this effort Jefferson Lab performed quench studies on 2 9 cell seamless hydroformed cavities. These cavities include DESY's - Z163 and Z164 nine-cell cavities hydroformed at DESY. Initial Rf test results Z163 were published in SRF2011. In this report we will present post JLAB surface re-treatment quench studies for each cavity. The data will include OST and T-mapping quench localization as well as quench location preheating analysis comparing them to the observations in standard electron beam welded cavities.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1164410
• Report Number(s): JLAB-ACC-13-1824; DOE/OR/23177-2903
• Resource Relation: Conference: SRF 2013, 23-27 Sept 2013. Paris, France
• Country of Publication: United States
• Language: English