Overview
|
A low-emittance and high-current RF gun in the injector linac is crucial in order to have a 40-times higher luminosity at the SuperKEKB collider compared with the previous KEKB project. The required injection beam parameters are; (emittance) 20 mm.mrad, (energy spread) 0.1%, (beam bunch charge) 5 nC/bunch, (bunches per pulse) 2 bunches separated by 96 ns, (pulse repetition) 50 Hz. It is preferable to generate 10 nC/bunch beam as well for positron production. It is composed of; (a) a high power laser system with an Yb fiber oscillator, multiple stages of Yb fiber amplifiers and thin-disk amplifiers, and frequency doublers, (b) an Ir5Ce or Ir7Ce2 photo cathode, and (c) a quasi-travelling-wave side-couple (QTWSC) cavity. Please send your comments and questions to M.Yoshida or K.Furukawa. |
Review/workshop
Workshop, June 10, 2016
Review, November 19 - 20, 2015
Review, February 19 - 20, 2015
Workshop, August 29, 2013
- SuperKEKB RF-gun development (Mitsuhiro Yoshida)
- SuperKEKB RF-gun cavity development (Takuya Natsui)
- SuperKEKB RF-gun fiber laser development (Xiangyu Zhou)
- SuperKEKB RF-gun cathode development (Daisuke Satoh)
- Compact ERL laser system (Yosuke Honda)
- Laser system for THz generation in a compact accelerator (Alexander S. Aryshev)
Linac upgrade meetings
Presentations and Articles
History of annular coupledRF-Gun development [pdf]
[local-copy]
M. Yoshida,
Virtual Poster Session, KEK 50th Anniversary Symposium, November 2021, PA09.
Introduction of Linac and RF Gun Drive Laser System for SuperKEKB [pdf]
[local-copy]
R. Zhang,
Accelerator laboratory meeting, October 2021.
RF gun drive Yb/Nd hybrid laser system for SuperKEKB phase III commissioning [pdf]
R. Zhang, X. Zhou, H. Kumano, N. Toyotomi, Y. Honda, M. Yoshida,
Proc of PASJ2019,
Kyoto, Japan, July - August 2019, pp.483-486, WEPI022.
Upgrade of electron beam generation system for Phase-III commissioning of SuperKEKB project [pdf]
X. Zhou, R. Zhang, M. Yoshida, Y. Honda, Y. Ogawa,
Proc of PASJ2019,
Kyoto, Japan, July - August 2019, pp.487-490, WEPI023.
Hybrid Yb/Nd Laser System for RF Gun in SuperKEKB Phase II and Phase III Commissioning [pdf]
[doi]
R. Zhang, Y. Honda, M. Yoshida, X. Zhou, H. Kumano, N. Toyotomi,
Proc of IPAC2019, Melbourne, Australia, May 2019, pp.3663-3666, THPGW037.
The Developing of the Beam Injection Section with Laser Source and S-Band Electron Rf Gun for SuperKEKB Project [pdf]
[doi]
X. Zhou, M. Yoshida, R. Zhang, Y. Ogawa,
Proc of LINAC2018, Beijing, China, September 2018, pp.50-53, MOPO007.
Yb/Nd hybrid laser system for RF gun in SuperKEKB phase II [pdf]
R. Zhang, X. Zhou, H. Kumano, N. Toyotomi, M. Yoshida,
Proc of PASJ2018, Nagaoka, Japan, August 2018, pp.763-767, THP005.
Yb/Nd Doped Hybrid Solid Laser of RF Gun and Beam Commissioning for Phase-II of SuperKEKB [pdf]
[doi]
R. Zhang, X. Zhou, T. Natsui, Y. Ogawa, M. Yoshida,
Proc of IPAC2018, Vancouver, Canada, April-May 2018, pp.2836-2839, WEPML060.
Research and development of iridium cerium photocathode for SuperKEKB injector linac
[doi]
D. Satoh, T. Shibuya, N. Hayashizaki, R. Zhang, X. Zhou, T. Natsui, M. Yoshida,
Energy Procedia 131, 2017, pp.326-333.
Cut disk structure type RF-deflector for slice emittance measurement for RF-gun at SuperKEKB
[doi]
A. Inoue, T. Natsui, M. Yoshida,
Energy Procedia 131, 2017, pp.334-341.
New Achievements of the Laser System for RF-Gun at SuperKEKB Injector [jacow]
[doi]
R. Zhang, X. Zhou, T. Natsui, Y. Ogawa, M. Yoshida,
Proc of IPAC2017, Copenhagen, Denmark, May 2017, pp.1452-1455, TUPAB056.
Developing an Yb/Nd Doped Hybrid Solid Laser of RF Gun for SuperKEKB Phase II Commissioning [pdf]
[doi]
X. Zhou, T. Natsui, M. Yoshida, R. Zhang, Y. Ogawa,
Proc of IPAC2017, Copenhagen, Denmark, May 2017, pp.4540-4543, THPVA047.
Injector Linac Upgrade and New RF Gun Development for SuperKEKB [jacow-pdf]
[slide]
[doi]
T. Natsui, D. Satoh, M. Yoshida, R. Zhang, X. Zhou,
Proc of eeFACT2016, Daresbury, UK, October 2016, pp.74-78, TUT2H2.
Neodymium and Ytterbium Hybrid Solid Laser of RF Gun for SuperKEKB [jacow]
X. Zhou, T. Natsui, M. Yoshida, R. Zhang, Y. Ogawa, T. Shibuya,
Proc of IPAC2016, Busan, Korea, May 2016, pp.3748-3750, THPMY041.
Improvements of the Laser System for RF-Gun at SuperKEKB Injector [pdf]
R. Zhang, X. Zhou, T. Natsui, M. Yoshida, Y. Ogawa,
Proc of PASJ2015, Tsuruga, Japan, August 2015, WEP121.
Improvements of the Laser System for RF-Gun at SuperKEKB Injector [pdf]
R. Zhang, M. Yoshida, T. Natsui, X. Zhou, Y. Ogawa,
Proc of IPAC2015, Richmond, Virginia, USA, May 2015, pp.1598-1600, TUPWA071.
Quasi-Traveling Wave RF Gun and Beam Commissioning for SuperKEKB [pdf]
T. Natsui, M. Yoshida, X. Zhou, Y. Ogawa,
Proc of IPAC2015, Richmond, Virginia, USA, May 2015, pp.1610-1612, TUPJE003.
25 Hz, Sub-mJ Ytterbium Laser Source of RF Gun for SuperKEKB Linac [pdf]
X. Zhou, T. Natsui, M. Yoshida, R. Zhang, Y. Ogawa,
Proc of IPAC2015, Richmond, Virginia, USA, May 2015, pp.2862-2864, WEPMA044.
Overview of SuperKEKB injector linac and rf gun [slide]
K. Furukawa, M. Yoshida, December 2014.
Generation and Acceleration of Low-emittance, High-current Electron Beams for SuperKEKB [pdf],
[slide]
M. Yoshida, N. Iida, S. Kazama, T. Natsui, Y. Ogawa, S. Ohsawa, H. Sugimoto, L. Zang, X. Zhou, D. Sato,
Proc of LINAC2014, Geneva, Switzerland, September 2014, MOIOB03.
Quasi-traveling Wave Side Couple RF Gun Commissioning for SuperKEKB [pdf]
T. Natsui, Y. Ogawa, M. Yoshida, X. Zhou,
Proc of IPAC2014, Dresden, Germany, June 2014, pp.667-669, MOPRI033.
Development of Iridium Cerium Cathode Material for High Charge and High Current Electron Source [jacow]
D. Satoh, T. Natsui, M. Yoshida, N. Hayashizaki,
Proc of IPAC2014, Dresden, Germany, June 2014, pp.679-681, MOPRI037.
Ytterbium Fiber and Disk Laser of RF Gun for SuperKEKB [pdf]
X. Zhou, T. Natsui, Y. Ogawa, M. Yoshida,
Proc of IPAC2014, Dresden, Germany, June 2014, pp.2415-2417, WEPME061.
RF Gun and Emittance Preservation [pdf]
M. Yoshida, KEKB MAC Review, March 2014.
Quasi Traveling Wave Side Couple RF Gun for SuperKEKB [pdf],
[slide]
T. Natsui, M. Yoshida, X. Zhou, Y. Ogawa,
Proc of IPAC2013, Shanghai, China, May 2013, pp.1117-1119, TUOCB103.
Development of Better Quantum Efficiency and Long Lifetime IrCe Photocathode for High Charge electron RF Gun [jacow]
D. Satoh, N. Hayashizaki, M. Yoshida,
Proc of IPAC2013, Shanghai, China, May 2013, pp.327-329, MOPFI023.
Longitudinal Manipulation to Obtain and Keep the Low Emittance and High Charge Electron Beam for SuperKEKB Injector [pdf]
M. Yoshida, N. Iida, T. Natsui, Y. Ogawa, S. Ohsawa, H. Sugimoto, L. Zang, X. Zhou,
Proc of IPAC2013, Shanghai, China, May 2013, pp.1337-1339, TUPFI004.
Ytterbium Laser Development of DAW RF Gun for SuperKEKB [pdf]
X. Zhou, T. Natsui, M. Yoshida, Y. Ogawa,
Proc of IPAC2013, Shanghai, China, May 2013, pp.2965-2967, WEPME018.
RF Gun [pdf]
M. Yoshida, KEKB MAC Review, March 2013.
SuperKEKB Injector Upgrade for High Charge and Low Emittance Electron Beam [pdf],
[poster]
M. Yoshida, N. Iida, T. Natsui, M. Satoh, Y. Ogawa, L. Zang,
Proc of IPAC2012, New Orleans, USA, May 2012, pp.1482-1484, TUPPD035.
High Charge Low Emittance RF Gun for SuperKEKB [pdf],
[poster]
T. Natsui, M. Yoshida, X. Zhou, Y. Ogawa,
Proc of IPAC2012, New Orleans, USA, May 2012, pp.1533-1535, TUPPD057.
Ytterbium Fiber Laser System of DAW RF Gun for SuperKEKB [pdf]
X. Zhou, T. Natsui, M. Yoshida, Y. Ogawa,
Proc of IPAC2012, New Orleans, USA, May 2012, pp.2648-2650, WEPPD056.
KEKB Linac Wakefield Studies of Comparing Theoretical Calculation, Simulation and Experimental Measurement [pdf]
L. Zang, N. Iida, Y. Ogawa, M. Satoh, M. Yoshida, D.M. Zhou,
Proc of IPAC2011, San Sebastian, Spain, September 2011, pp.739-741, MOPS058.
Japanese Articles
Upgrade of electron beam generation system for Phase-III commissioning of SuperKEKB project [pdf]
X. Zhou, R. Zhang, M. Yoshida, Y. Honda, Y. Ogawa,
Proc of PASJ2019, Kyoto, Japan, July - August 2019, pp., WEPI023.
Commissioning of RF-Gun for SuperKEKB [pdf]
M. Yoshida, X. Zhou, R. Zhang, M. Nishida, T. Natsui, D. Sato,
Proc of PASJ2018, Nagaoka, Japan, August 2018, pp.200-203, FROM06.
Phase-II Commissioning of RF Gun for SuperKEKB [pdf]
X. Zhou, R. Zhang, M. Yoshida, Y. Ogawa,
Proc of PASJ2018, Nagaoka, Japan, August 2018, pp.294-297, WEP006.
Commissioning of RF gun for SuperKEKB [pdf]
T. Natsui, M. Yoshida, X. Zhou, R. Zhang, Y. Ogawa,
Proc of PASJ2015, Tsuruga, Japan, August 2015, WEP006.
25Hz and 50Hz double-bunch laser system upgrade for RF gun at SuperKEKB [pdf]
X. Zhou, T. Natsui, R. Zhang, M. Yoshida, Y. Ogawa,
Proc of PASJ2015, Tsuruga, Japan, August 2015, THP115.
Laser system upgrade for RF gun at SuperKEKB [pdf]
X. Zhou, T. Natsui, M. Yoshida, Y. Ogawa,
Proc of PASJ2014, Aomori, Japan, August 2014, SAP114.
Commissioning of High-Charge, Low-Emittance, RF Gun for SuperKEKB [pdf]
T. Natsui, M. Yoshida, X. Zhou, Y. Ogawa,
Proc of PASJ2014, Aomori, Japan, August 2014, SUP004.
Development of new photocathode materials and its quantum efficiency improvement for high brightness electron gun [pdf]
D. Satoh, M. Yoshida, N. Hayashizaki, T. Natsui, I. Tanaka,
Proc of PASJ2013, Nagoya, Japan, August 2013, pp.540-543, SAP044.
Yb hybrid laser system of DAW RF gun for SuperKEKB [pdf]
X. Zhou, T. Natsui, M. Yoshida, Y. Ogawa,
Proc of PASJ2013, Nagoya, Japan, August 2013, pp.765-768, SAP106.
Temporal manipulation of low emittance and high charge electron beam for SuperKEKB injection [pdf]
M. Yoshida, T. Natsui, X. Zhou, Y. Ogawa, H. Sugimoto, N. Iida, L. Zang, M. Satoh,
Proc of PASJ2013, Nagoya, Japan, August 2013, pp.834-836, SUP009.
Charge History
Links
Progress of injector linac, January 2015 [slide] (partly in Japanese)
- KEKB machine advisory committee review, 1995-2019
- KEKB machine advisory committee review, 2019
- KEKB machine advisory committee review, 2018
- KEKB machine advisory committee review, 2016
- KEKB machine advisory committee review, 2015
- KEKB machine advisory committee review, 2014
B factory project steering committee, -2015 (partly in Japanese)
