Title :
High brightness injectors based on photocathode dc gun
Author_Institution :
Thomas Jefferson Nat. Accelerator Facility, Newport News, VA, USA
Abstract :
Sample results of new injector design method based on a photocathode dc gun are presented, based on other work analytically proving the validity of the emittance compensation scheme for the case even when beam bunching is involved. We have designed several new injectors appropriate for different bunch charge ranges accordingly. Excellent beam quality produced by these injectors clearly shows that a photocathode dc gun can compete with a rf gun on an equal footing as the source of an electron beam for the bunch charge ranging up to 2 nano Coulomb (nC). This work therefore elevates a dc gun based injector to the preferred choice for many ongoing high brightness accelerator projects considering the proven operational stability and high average power capability of the dc gun
Keywords :
electron guns; particle beam bunching; particle beam injection; photocathodes; beam bunching; beam quality; bunch charge; emittance compensation; high brightness injectors; photocathode dc gun; Brightness; Cathodes; Design methodology; Electric breakdown; Electron beams; Job design; Linear particle accelerator; Particle beams; Stability; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987343
