AVS 61st International Symposium & Exhibition
    Vacuum Technology Tuesday Sessions
       Session VT-TuP

Paper VT-TuP5
The XHV Cathode Preparation System of the "High Current High Polarization" Electron Gun for the Proposed eRHIC Project.

Tuesday, November 11, 2014, 6:30 pm, Room Hall D

Session: Vacuum Technology Division Poster Session and Student Poster Contest
Presenter: Omer Rahman, Brookhaven National Laboratory
Authors: O. Rahman, Brookhaven National Laboratory
I. Ben-Zvi, Brookhaven National Laboratory
E. Wang, Brookhaven National Laboratory
T. Rao, Brookhaven National Laboratory
J. Skaritka, Brookhaven National Laboratory
Correspondent: Click to Email
A very compact cathode preparation chamber for the high current high polarization gun for the proposed Erhic project has been designed and assembled at the Brookhaven National Laboratory. This preparation chamber is used to prepare GaAs cathodes to be used to extract electron beam in the multi-cathode gun. Preparation of GaAs strictly requires XHV environment and this system is able to achieve that in a consistent way. In this paper, the construction of the vacuum system including different components, the procedure and pressure results over more than a year of study will be discussed.