Author/Authors :
Janssen، نويسنده , , D. and Büttig، نويسنده , , H. and Evtushenko، نويسنده , , P. and Freitag، نويسنده , , M. and Gabriel، نويسنده , , F. and Hartmann، نويسنده , , B. E. Lehnert، نويسنده , , U. and Michel، نويسنده , , P. and Mِller، نويسنده , , K. and Quast، نويسنده , , T. and Reppe، نويسنده , , B. and Schamlott، نويسنده , , A. and Schneider، نويسنده , , Ch. and Schurig، نويسنده , , R. and Teichert، نويسنده , , J. and Konstantinov، نويسنده ,
Abstract :
For the first time, a superconducting RF gun where a photocathode is inside a superconducting cavity has been working stably over a period of seven weeks. The gun with a half-cell cavity has been operated in the cryostat at 4.2 K. A maximal field strength of 22 MV/m in the cavity and maximal beam energy of 900 keV have been obtained. Measurements of beam current, transmission, energy spread and transverse emittance are presented and discussed.
Keywords :
cavity , Superconductivity , Photocathode , Electron gun , Laser
