Abstract
A new tungsten single-crystal target has been successfully employed at the positron source of the KEKB injector linac. The crystal thickness was determined to be 10.5 mm based on the previous systematic measurements of the positron-production efficiency. The crystal axis, 〈111〉, was precisely aligned to the direction of the 4-GeV primary electron beam. The positron yield increased by ∼25% compared to that for a conventional tungsten plate with a thickness of 14 mm. On the contrary, the heat load on the crystal target decreased by ∼20%. No degradation of the positron-production efficiency was observed since the crystal target was installed in September 2006, and it has been stably operating at the KEK B-factory.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the IEEE Particle Accelerator Conference |
| Pages | 2778-2780 |
| Number of pages | 3 |
| DOIs | |
| Publication status | Published - 2007 |
| Event | IEEE Particle Accelerator Conference, PAC07 - Albuquerque, NM, United States Duration: 25 Jun 2007 → 29 Jun 2007 |
Other
| Other | IEEE Particle Accelerator Conference, PAC07 |
|---|---|
| Country | United States |
| City | Albuquerque, NM |
| Period | 25.6.07 → 29.6.07 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac. / Suwada, T.; Satoh, M.; Sugimura, T.; Kamitani, T.; Furukawa, K.; Umemori, K.; Okuno, H.; Haruna, T.; Hamatsu, R.; Sumiyoshi, T.; Yoshida, K.; Potylitsin, A. P.; Tropin, I. S.; Chehab, R.
Proceedings of the IEEE Particle Accelerator Conference. 2007. p. 2778-2780 4440573.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac
AU - Suwada, T.
AU - Satoh, M.
AU - Sugimura, T.
AU - Kamitani, T.
AU - Furukawa, K.
AU - Umemori, K.
AU - Okuno, H.
AU - Haruna, T.
AU - Hamatsu, R.
AU - Sumiyoshi, T.
AU - Yoshida, K.
AU - Potylitsin, A. P.
AU - Tropin, I. S.
AU - Chehab, R.
PY - 2007
Y1 - 2007
N2 - A new tungsten single-crystal target has been successfully employed at the positron source of the KEKB injector linac. The crystal thickness was determined to be 10.5 mm based on the previous systematic measurements of the positron-production efficiency. The crystal axis, 〈111〉, was precisely aligned to the direction of the 4-GeV primary electron beam. The positron yield increased by ∼25% compared to that for a conventional tungsten plate with a thickness of 14 mm. On the contrary, the heat load on the crystal target decreased by ∼20%. No degradation of the positron-production efficiency was observed since the crystal target was installed in September 2006, and it has been stably operating at the KEK B-factory.
AB - A new tungsten single-crystal target has been successfully employed at the positron source of the KEKB injector linac. The crystal thickness was determined to be 10.5 mm based on the previous systematic measurements of the positron-production efficiency. The crystal axis, 〈111〉, was precisely aligned to the direction of the 4-GeV primary electron beam. The positron yield increased by ∼25% compared to that for a conventional tungsten plate with a thickness of 14 mm. On the contrary, the heat load on the crystal target decreased by ∼20%. No degradation of the positron-production efficiency was observed since the crystal target was installed in September 2006, and it has been stably operating at the KEK B-factory.
UR - http://www.scopus.com/inward/record.url?scp=51349141817&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51349141817&partnerID=8YFLogxK
U2 - 10.1109/PAC.2007.4440573
DO - 10.1109/PAC.2007.4440573
M3 - Conference contribution
SN - 1424409179
SN - 9781424409174
SP - 2778
EP - 2780
BT - Proceedings of the IEEE Particle Accelerator Conference
ER -