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Long Lifetime of Bialkali Photocathodes Operating in High Gradient Superconducting Radio Frequency Gun by Wang, E. (author);Litvinenko, V. N. (author);Pinayev, I. (author);Gaowei, M. (author);Skaritka, J. (author);Belomestnykh, S. (author);Ben-Zvi, I. (author);Brutus, J. C. (author);Jing, Y. (author);Biswas, J. (author);Ma, J. (author);Narayan, G. (author);Petrushina, I. (author);Rahman, O. (author);Xin, T. (author);Rao, T. (author);Severino, F. (author);Shih, K. (author);Smith, K. (author);Wang, G. (author);Wu, Y. (author) is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Long Lifetime of Bialkali Photocathodes Operating in High Gradient Superconducting Radio Frequency Gun about?

## Abstract High brightness, high charge electron beams are critical for a number of advanced accelerator applications. The initial emittance of the electron beam, which is determined by the mean transverse energy (MTE) and laser spot size, is one of the most important parameters determining the beam quality. The bialkali photocathodes illuminated by a visible laser have the advantages of high quantum efficiency (QE) and low MTE. Furthermore, Superconducting Radio Frequency (SRF) guns can operate in the continuous wave (CW) mode at high accelerating gradients, e.g. with significant reduction of the laser spot size at the photocathode. Combining the bialkali photocathode with the SRF gun enables generation of high charge, high brightness, and possibly high average current electron beams. However, integrating the high QE semiconductor photocathode into the SRF guns has been challenging. In this article, we report on the development of bialkali photocathodes for successful operation in the SRF gun with months-long lifetime while delivering CW beams with nano-coulomb charge per bunch. This achievement opens a new era for high charge, high brightness CW electron beams.

Who reads Long Lifetime of Bialkali Photocathodes Operating in High Gradient Superconducting Radio Frequency Gun?

It is typically read by researchers, students, and practitioners in Biochemistry, Genetics and Molecular Biology.

Author
Wang, E. (author);Litvinenko, V. N. (author);Pinayev, I. (author);Gaowei, M. (author);Skaritka, J. (author);Belomestnykh, S. (author);Ben-Zvi, I. (author);Brutus, J. C. (author);Jing, Y. (author);Biswas, J. (author);Ma, J. (author);Narayan, G. (author);Petrushina, I. (author);Rahman, O. (author);Xin, T. (author);Rao, T. (author);Severino, F. (author);Shih, K. (author);Smith, K. (author);Wang, G. (author);Wu, Y. (author)
Publisher
Springer Science and Business Media LLC
Published
2021
Language
EN
Field
Biochemistry, Genetics and Molecular Biology (Life Sciences)

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