Description
Maud Baylac
The institute for nuclear physics at TU Darmstadt houses a test stand for Photo-Cathode Activation, Testing and Cleaning using atomic-Hydrogen (Photo-CATCH). It enables dedicated research on, e.g., quantum efficiency and lifetimes of GaAs photocathodes as well as DC photo-gun design for future use at the in-house Superconducting Darmstadt Linear Accelerator S-DALINAC. This contribution will...
A photogun to generate high intensity, high polarization electron beam with unprecedented kC lifetime is being envisioned at JLab for the proposed Ce+BAF polarized positron source. The positron source will require > 1 milliampere CW with > 90% polarization electron beam at 120 MeV. To be practical for a user program, a photogun operating at 1 milliampere should deliver ~2 kC high polarization...
Polarized positron beams generated from MeV-class accelerators may become useful for applied physics. We first discuss how existing facilities – e.g. the low emittance positron beamline at the MAMI accelerator in Mainz - can be extended towards spin-polarized operation. In the end, however, it is the intensity of the driving polarized electron source which is one of the most important limiting...
The future Electron Ion Collider (EIC) will use photocathode based DC electron guns for both polarized and unpolarized electron beam generation. In this talk, the current status and recent progress of polarized photocathode research and applications at Brookhaven National Lab (BNL) will be presented. We will describe the experimental results from 300 a kV DC electron gun with DBR-SSL-GaAs...
