Published June 2017 | Version v1
Report Metadata-only

Development of superconducting cavity in ULVAC

Creators

  • 1. ULVAC, Inc., Chigasaki, Kanagawa (Japan)
  • 2. High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki (Japan)

Description

We study about seamless cavity made from our high purity Nb materials as research for lower cost fabrication than present process. Seamless cavity is applied hydroforming process from seamless tube, i.e. direct cavity-shape forming without EB welding process at cell equator and iris area. Single cell and three-cell seamless cavity was successfully formed. Single cell cavity showed Eacc max = 37 MV/m. In order to suppress a surface roughness in case of tube deformation, we modified a spinning machine so that we could obtain a high dimensional accuracy tube with small crystal grain. About 30 % reduction of grain size was observed in an improved seamless tube. Also, material yield increased to 24 % according to omit the machining from tube fabrication process. (author)

Part of:
Proceedings of the 18th KEK mechanical engineering workshop

Additional details

Additional titles

Original title (Japanese)
アルバックにおける超伝導加速空洞の開発

Identifiers

URL
https://lib-extopc.kek.jp/preprints/PDF/2017/1725/1725001.pdf;

Publishing Information

Imprint Title
Proceedings of the 18th KEK mechanical engineering workshop
Imprint Pagination
90 p.
Journal Page Range
p. 50-52
Report number
KEK-PROC--2017-1

Conference

Title
18. KEK mechanical engineering workshop
Dates
14 Apr 2017
Place
Tsukuba, Ibaraki (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
55009079
Subject category
S43: PARTICLE ACCELERATORS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
CAVITIES; COST ESTIMATION; DEFORMATION; ELECTRON BEAM WELDING; ELECTRON DIFFRACTION; GRAIN ORIENTATION; GRAIN SIZE; INTERNATIONAL LINEAR COLLIDER; KEK; MAGNETIC FIELDS; NIOBIUM; PLASTICITY; SUPERCONDUCTING CAVITY RESONATORS
Descriptors DEC
ACCELERATORS; CAVITY RESONATORS; COHERENT SCATTERING; DIFFRACTION; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; FABRICATION; JAPANESE ORGANIZATIONS; JOINING; LINEAR ACCELERATORS; LINEAR COLLIDERS; MECHANICAL PROPERTIES; METALS; MICROSTRUCTURE; NATIONAL ORGANIZATIONS; ORIENTATION; REFRACTORY METALS; RESONATORS; SCATTERING; SIZE; SUPERCONDUCTING DEVICES; TRANSITION ELEMENTS; WELDING

Optional Information

Notes
4 refs., 6 figs. Imprint:#7B2C#18#56DE##9AD8##30A8##30CD##7814##30E1##30AB##FF65##30EF##30FC##30AF##30B7##30E7##30C3##30D7##5831##544A##96C6#