20 MV/m accelerating gradient with heat treatment of a six cell, 1.5 GHz cavity for TESLA

Author

Kirchgessner, J. ; Barnes, P. ; Hartung, W. ; Hiller, M. ; Moffat, D. ; Padamsee, H. ; Rubin, D. ; Saraniti, D. ; Sears, J. ; Shu, Q.S. ; Tigner, M.

Author_Institution

Lab. of Nucl. Studies, Cornell Univ., Ithaca, NY, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

921

Abstract

In order to use superconducting RF accelerating structures in the construction of a high energy linear collider, the structures must be designed to meet specific goals. These include low peak surface electric fields, good higher order mode power extraction from the ends, maximum accelerating gradient and, above all, low cost per unit accelerating voltage. Such a structure has been designed, manufactured and tested. Preliminary results have been reported. The cavity was then mechanically braced with Niobium braces and then heat treated. The final test gave 20 MV/m accelerating field. Details of some difficulties encountered will also be presented at this time

Keywords

beam handling equipment; cavity resonators; heat treatment; 1.5 GHz; 20 MV/m accelerating gradient; Nb; Nb braces; TESLA; cost; heat treatment; high energy linear collider; higher order mode power extraction; low peak surface electric fields; six cell 1.5 GHz cavity; superconducting RF accelerating structures; Acceleration; Costs; Heat treatment; Life estimation; Manufacturing; Niobium; Radio frequency; Surface treatment; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308729

Filename

308729