The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Schubert, S.G. AU - Ding, Z. AU - Gaowei, M. AU - Kühn, J. AU - Muller, E.M. AU - Padmore, H.A. AU - Sinsheimer, J. AU - Smedley, J. AU - Wong, J.J. AU - Xie, J. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - CsK2Sb Growth Studies: Towards High Quantum Efficiency and Smooth Surfaces J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - The properties of CsK2Sb, make this material an ideal candidate as photocathode for electron injector use. Producing photocathodes with quantum efficiencies with 7% and greater at 532 nm poses no challenge, nevertheless the traditional growth mechanisms, which are based on a sequential deposition of Antimony, Potassium and Cesium at a temperature gradient yield a rough surface with a rms roughness in the range of 25 nm. Surface roughness’s in this region impacts the emittance. At an accelerating field of 3 MV/m an rms surface roughness of 25 nm is the dominant effect on emittance and will limit injector performance. Studies are performed to optimize roughness. Various growth procedures are exploited and the surface roughness compared. PB - JACoW CP - Geneva, Switzerland SP - 2566 EP - 2568 KW - cathode KW - simulation KW - emittance KW - detector KW - experiment DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPWA032 UR - http://jacow.org/ipac2015/papers/wepwa032.pdf ER -