Development of a photocathode test bench using a CRYO-pump and a neg pump

D. Kubo; M. Kuriki; H. Iijima; K. Ito; C. Shonaka; Y. Masumoto; Nobuyuki Nishimori; M. Yamamoto

Development of a photocathode test bench using a CRYO-pump and a neg pump

D. Kubo, M. Kuriki, H. Iijima, K. Ito, C. Shonaka, Y. Masumoto, Nobuyuki Nishimori, M. Yamamoto

Center for Advanced Microscopy and Spectroscopy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The Beam Physics Laboratory of Hiroshima University studys photo-cathode for future acceleators by using a photo-cathode test bench. It aims to develop a cathode with the higher quantum efficiency and longer-lifetime. GaAs with Negative Electron Affinity (NEA) surface is one of the best cathode among the advanced cathode matrials. The NEA surface is essential to activate it as an electron source. It is well known that the NEA GaAs photo-cathode needs extremely high vacuum, because it is easily damaged. To study the detail process of the cathode property degradation by the damage, we construct a photo-cathode test bench with an extremely high vacuum quality based on a cryo-pump (2700l/s) and a NEG pump (1900l/s). The vacuum chamber is made of titanium (TP340) for low outgassing rate. We alredy obtain 1.7E-9Pa only with the cryo-pump. In this article, the test bench is briefly explained and the results of the first vacuum test is presented.

Original language	English
Title of host publication	IPAC 2010 - 1st International Particle Accelerator Conference
Pages	2326-2328
Number of pages	3
Publication status	Published - 2010 Dec 1
Event	1st International Particle Accelerator Conference, IPAC 2010 - Kyoto, Japan Duration: 2010 May 23 → 2010 May 28

Publication series

Name	IPAC 2010 - 1st International Particle Accelerator Conference

Other

Other	1st International Particle Accelerator Conference, IPAC 2010
Country	Japan
City	Kyoto
Period	10/5/23 → 10/5/28

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Kubo, D., Kuriki, M., Iijima, H., Ito, K., Shonaka, C., Masumoto, Y., Nishimori, N., & Yamamoto, M. (2010). Development of a photocathode test bench using a CRYO-pump and a neg pump. In IPAC 2010 - 1st International Particle Accelerator Conference (pp. 2326-2328). (IPAC 2010 - 1st International Particle Accelerator Conference).

Development of a photocathode test bench using a CRYO-pump and a neg pump. / Kubo, D.; Kuriki, M.; Iijima, H.; Ito, K.; Shonaka, C.; Masumoto, Y.; Nishimori, Nobuyuki; Yamamoto, M.

IPAC 2010 - 1st International Particle Accelerator Conference. 2010. p. 2326-2328 (IPAC 2010 - 1st International Particle Accelerator Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kubo, D, Kuriki, M, Iijima, H, Ito, K, Shonaka, C, Masumoto, Y, Nishimori, N & Yamamoto, M 2010, Development of a photocathode test bench using a CRYO-pump and a neg pump. in IPAC 2010 - 1st International Particle Accelerator Conference. IPAC 2010 - 1st International Particle Accelerator Conference, pp. 2326-2328, 1st International Particle Accelerator Conference, IPAC 2010, Kyoto, Japan, 10/5/23.

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abstract = "The Beam Physics Laboratory of Hiroshima University studys photo-cathode for future acceleators by using a photo-cathode test bench. It aims to develop a cathode with the higher quantum efficiency and longer-lifetime. GaAs with Negative Electron Affinity (NEA) surface is one of the best cathode among the advanced cathode matrials. The NEA surface is essential to activate it as an electron source. It is well known that the NEA GaAs photo-cathode needs extremely high vacuum, because it is easily damaged. To study the detail process of the cathode property degradation by the damage, we construct a photo-cathode test bench with an extremely high vacuum quality based on a cryo-pump (2700l/s) and a NEG pump (1900l/s). The vacuum chamber is made of titanium (TP340) for low outgassing rate. We alredy obtain 1.7E-9Pa only with the cryo-pump. In this article, the test bench is briefly explained and the results of the first vacuum test is presented.",

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AU - Kubo, D.

AU - Kuriki, M.

AU - Iijima, H.

AU - Ito, K.

AU - Shonaka, C.

AU - Masumoto, Y.

AU - Nishimori, Nobuyuki

AU - Yamamoto, M.

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N2 - The Beam Physics Laboratory of Hiroshima University studys photo-cathode for future acceleators by using a photo-cathode test bench. It aims to develop a cathode with the higher quantum efficiency and longer-lifetime. GaAs with Negative Electron Affinity (NEA) surface is one of the best cathode among the advanced cathode matrials. The NEA surface is essential to activate it as an electron source. It is well known that the NEA GaAs photo-cathode needs extremely high vacuum, because it is easily damaged. To study the detail process of the cathode property degradation by the damage, we construct a photo-cathode test bench with an extremely high vacuum quality based on a cryo-pump (2700l/s) and a NEG pump (1900l/s). The vacuum chamber is made of titanium (TP340) for low outgassing rate. We alredy obtain 1.7E-9Pa only with the cryo-pump. In this article, the test bench is briefly explained and the results of the first vacuum test is presented.

AB - The Beam Physics Laboratory of Hiroshima University studys photo-cathode for future acceleators by using a photo-cathode test bench. It aims to develop a cathode with the higher quantum efficiency and longer-lifetime. GaAs with Negative Electron Affinity (NEA) surface is one of the best cathode among the advanced cathode matrials. The NEA surface is essential to activate it as an electron source. It is well known that the NEA GaAs photo-cathode needs extremely high vacuum, because it is easily damaged. To study the detail process of the cathode property degradation by the damage, we construct a photo-cathode test bench with an extremely high vacuum quality based on a cryo-pump (2700l/s) and a NEG pump (1900l/s). The vacuum chamber is made of titanium (TP340) for low outgassing rate. We alredy obtain 1.7E-9Pa only with the cryo-pump. In this article, the test bench is briefly explained and the results of the first vacuum test is presented.

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