Automated Hydroforming of Seamless Superconducting RF Cavity

Conference · Tue Jul 31 00:00:00 EDT 2012

OSTI ID:1048688

Nagata, Tomohiko ^[1]; Shinozawa, Seiichi ^[1]; Abe, Noriyuki ^[1]; Nagakubo, Junki ^[1]; Murakami, Hirohiko ^[1]; Tajima, Tsuyoshi ^[2]; Inoue, Hitoshi ^[3]; Yamanaka, Masashi ^[3]; Ueno, Kenji ^[3]

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1. ULVAC, Inc.
2. Los Alamos National Laboratory
3. High Energy Accelerator Research Organization, KEK

We are studying the possibility of automated hydroforming process for seamless superconducting RF cavities. Preliminary hydroforming tests of three-cell cavities from seamless tubes made of C1020 copper have been performed. The key point of an automated forming is to monitor and strictly control some parameters such as operation time, internal pressure and material displacements. Especially, it is necessary for our studies to be able to control axial and radial deformation independently. We plan to perform the forming in two stages to increase the reliability of successful forming. In the first stage hydroforming by using intermediate constraint dies, three-cell cavities were successfully formed in less than 1 minute. In parallel, we did elongation tests on cavity-quality niobium and confirmed that it is possible to achieve an elongation of >64% in 2 stages that is required for our forming of 1.3 GHz cavities.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: DOE/LANL
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1048688
• Report Number(s): LA-UR-12-23686; TRN: US1204245
• Resource Relation: Conference: The 9th Annual Meeting of Particle Accelerator Society of Japan ; 2012-08-08 - 2012-08-11 ; Osaka, Japan
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
43 PARTICLE ACCELERATORS
42 ENGINEERING
ACCELERATORS
CAVITIES
COPPER
DEFORMATION
ELONGATION
MONITORS
NIOBIUM
RELIABILITY