TY - GEN
T1 - Study of Cs-Te photocathode for rf electron gun
AU - Matsuzaki, Shuri
AU - Nishida, Mariko
AU - Sakaue, Kazuyuki
AU - Washio, Masakazu
AU - Iijima, Hokuto
N1 - Funding Information:
Work supported by Cooperative and Supporting Program for Researches and Educations in Universities and NEDO(New Energy and Industrial Technology Development Organization.
Publisher Copyright:
Copyright © 2015 CC-BY-3.0 and by the respective authors.
PY - 2015
Y1 - 2015
N2 - At Waseda University, we have been studying high quality electron beam with an rf electron gun. In recent accelerator study and application researches, high quality electron beam are strongly required. Photocathode is a key component to generate higher quality electron beam, thus we started to develop a Cs-Te photocathode as an electron source since 2007. Cs-Te photocathode shows high quantum efficiency (Q.E.) (∼10 %) and has long life time (∼several months). From 2013, we built a photocathode evaporation chamber and started photocathode study. In this study, our purpose is to clarify their property and to establish an ideal evaporation recipe. We succeeded in producing high quality Cs-Te photocathode, and electron beam generated by our Cs-Te photocathode shows high charge (4.6 nC/bunch) and high Q.E. (1.74 %) in our rf electron gun. Furthermore, we found a Q.E recovery after Cs deposition process and it causes higher Q.E. than usual due to, we believe, Cs deposition quantity or Cs deposition speed. Thus we are now surveying the optimum Cs evaporation parameters. In this conference, we will report a detail of our photocathode development system, the latest progress of optimization study of Cs-Te photocathode and future plans.
AB - At Waseda University, we have been studying high quality electron beam with an rf electron gun. In recent accelerator study and application researches, high quality electron beam are strongly required. Photocathode is a key component to generate higher quality electron beam, thus we started to develop a Cs-Te photocathode as an electron source since 2007. Cs-Te photocathode shows high quantum efficiency (Q.E.) (∼10 %) and has long life time (∼several months). From 2013, we built a photocathode evaporation chamber and started photocathode study. In this study, our purpose is to clarify their property and to establish an ideal evaporation recipe. We succeeded in producing high quality Cs-Te photocathode, and electron beam generated by our Cs-Te photocathode shows high charge (4.6 nC/bunch) and high Q.E. (1.74 %) in our rf electron gun. Furthermore, we found a Q.E recovery after Cs deposition process and it causes higher Q.E. than usual due to, we believe, Cs deposition quantity or Cs deposition speed. Thus we are now surveying the optimum Cs evaporation parameters. In this conference, we will report a detail of our photocathode development system, the latest progress of optimization study of Cs-Te photocathode and future plans.
UR - http://www.scopus.com/inward/record.url?scp=84994667373&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84994667373&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84994667373
T3 - 6th International Particle Accelerator Conference, IPAC 2015
SP - 1632
EP - 1634
BT - 6th International Particle Accelerator Conference, IPAC 2015
PB - Joint Accelerator Conferences Website (JACoW)
T2 - 6th International Particle Accelerator Conference, IPAC 2015
Y2 - 3 May 2015 through 8 May 2015
ER -