Demin Zhou's webpage

Contact:
Demin Zhou
Associate Professor of Accelerator Physics
Accelerator Division III, Accelerator Laboratory
High Energy Accelerator Research Organization (KEK)
1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
e-mail: dmzhou@post.kek.jp
Phone: +81-29-864-5245 (O)
PHS: +81-29-864-1171 (Extension: 4932)
Fax: +81-29-864-3182

Education:
2011, Ph.D. in accelerator physics, SOKENDAI/KEK
2005, M.S. in accelerator physics, IHEP(Beijing)
2000, B.A., dual major in physics and economics, Peking University
Experience:
2022.10-present: Associate professor in the accelerator physics group, KEK
2013.04-2022.09: Assistant professor in the accelerator physics group, KEK
2011.12-2013.03: Post-doc in the accelerator physics group, KEK
2005.06-2008.08: Assistant professor in the accelerator physics group, IHEP
2000.07-2002.08: Research associate in the SRF group, IHEP

1. Beam physics at KEKB and SuperKEKB

1.1 Overview

D. Zhou, Overview of collective effects, Talk presented at The 27th KEKB Accelerator Review Committee meeting, Mar. 26, 2024, KEK.
D. Zhou, Accelerator challenges in SuperKEKB, Talk presented at NSRL Colloquium, Nov. 8, 2023, USTC, Hefei, China.
D. Zhou, Accelerator physics challenges for SuperKEKB commissioning, Talk presented at Seminar on Accelerator physics and technologies, Sep. 22, 2023, IHEP, China.
D. Zhou, International Task Force Joint Meeting: Discussion on beam-beam, Talk presented at the 25th KEKB Review Meeting, Sep. 02, 2021, KEK.
D. Zhou, Beam dynamics issues, Talk presented at the SuperKEKB 2021c run summary meeting, Jan. 14, 2022.
D. Zhou, SuperKEKB status and outlook of reaching 1E35 peak luminosity, Talk presented at the Belle II meeting in Italy, Dec. 16, 2021.
D. Zhou, Introduction to accelerator physics at SuperKEKB, Talk presented at the Belle II Physics Week, Dec. 02, 2021.
D. Zhou, Beam dynamics issues: Comparisons of theories, simulations and experiments, Talk presented at the SuperKEKB 2021ab summary meeting, KEK, Jul. 29, 2021.
D. Zhou, Beam dynamics issues: Comparisons of theories, simulations and experiments, Talk presented at the SuperKEKB mini optics meeting, KEK, Jul. 20, 2021.
D. Zhou, The status of SuperKEKB commissioning, Talk presented at 2nd international workshop on High Intensity Electron-Positron Accelerator at China, Mar. 21, 2018.
K. Ohmi, Instabilities: simulation and observation, Talk presented at the 21th KEKB Accelerator Review Committee, KEK, Jun. 13, 2016.
D. Zhou et al., Beam Dynamics Issues in the SuperKEKB, ICFA beam dynamics newsletters 67, August 2015, Pages 40-54.
D. Zhou, Accelerator physics challenges for the SuperKEKB, Talk presented at the Theory club, FEL & Beam Physics Department, SLAC Mar. 13, 2015.
D. Zhou, Beam dynamics issues in SuperKEKB, Talk presented at the 20th KEKB Accelerator Review Committee, KEK, Feb. 23, 2015.
D. Zhou, Issues on beam dynamics in SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Sep. 17, 2014.
D. Zhou, Collective effects in SuperKEKB, Talk presented at the CLASSE seminar, Cornell University, Ithaca, NY, Aug. 6, 2014.
K. Ohmi, Crab crossing in KEKB and nano-beam scheme in SuperKEKB, Talk presented at the EIC14, JLab, Mar. 17-21, 2014.
K. Ohmi, Beam Dynamics: Beam-beam and electron cloud, Talk presented at the 19th KEKB Accelerator Review Committee, KEK, Mar. 3, 2014.
K. Oide, Final focus & Injection - Experiences at KEKB/SuperKEKB, Talk presented at the FCC kick-off meeting, Geneva Univ., Feb. 13, 2014.
Y. Funakoshi, Overview of SuperKEKB, issues and commissioning plan, Talk presented at the ICFA Mini-Workshop on Commissioning of SuperKEKB and e+e- Colliders, KEK, Nov. 11-13, 2013.
Y. Funakoshi, Pushing luminosity of e+e- colliders: the SuperKEKB project, Talk presented at the 6th TLEP Workshop, CERN, Oct. 16-18, 2013.
Y. Funakoshi, Achievements of KEKB, Prog. Theor. Exp. Phys. (2013) 03A001.
Y. Ohnishi, Accelerator design at SuperKEKB, Prog. Theor. Exp. Phys. (2013) 03A001.
H. Sugimoto, SuperKEKB Project, Talk presented at the Workshop on Tau-Charm at High Luminosity, La Biodola, Isola d'Elba, May 26-31, 2013.
D. Zhou, Beam Dynamics Issues in SuperKEKB: beam-beam, lattice nonlinearities, and space charge, Talk presented at the SuperKEKB optics meeting, KEK, Apr. 16, 2013.
D. Zhou, Beam Dynamics Issues in SuperKEKB, Talk presented at the 18th KEKB Accelerator Review Committee, KEK, Mar. 4-6, 2013.
K. Ohmi, Beam Dynamics Studies in SuperKEKB, Talk presented at the 3rd SuperB Collaboration Meeting, INFN-LNF, Mar. 19-23, 2012.
N. Iida et al., Beam Dynamics in Positron Injector Systems for the Next Generation B-Factories, in Proceedings of IPAC'11, San Sebastian, Spain.
K. Ohmi, Beam Dynamics Issues for Nano-Beam Scheme, Talk presented at the 16th KEKB Accelerator Review Committee, KEK, Feb. 7-9, 2011.
D. Zhou, Chromatic aberrations and Coherent Synchrotron Radiation in the KEKB and SuperKEKB, Seminar at IHEP, Dec. 22, 2010.
K. Oide, KEKB B-Factory, The Luminosity Frontier, Prog. Theor. Phys. Vol. 122, No. 1, July 2009.
K. Oide, A Few Issues on the Upgrade of KEKB B-Factory, in Proceedings of PAC'09, Vancouver, BC, Canada.

1.2 Single particle dynamics

D. Zhou, Transfer maps for accelerator modeling, Talk presented at the Accelerator physics seminar, Nov. 3, 2023, USTC, Hefei, China.
D. Zhou, Comparison of resonance driving terms for SuperKEKB before and after optimizations - Updates, Study memo, KEK, Mar. 13, 2018.
D. Zhou, Comparison of resonance driving terms for SuperKEKB before and after optimizations - Updates, Talk presented at the SuperKEKB mini optics meeting, KEK, Feb. 15, 2018.
H. Sugimoto, Dynamic aperture optimization with constraints for SuperKEKB LER, Talk presented at the SuperKEKB mini optics meeting, KEK, Sep. 08, 2016.
H. Sugimoto, Optics Correction and Low Emittance Tuning, Talk presented at the 21th KEKB Accelerator Review Committee, KEK, Jun. 13, 2016.
Y. Ohnishi, Overview of lattice, Talk presented at the 21th KEKB Accelerator Review Committee, KEK, Jun. 13, 2016.
D. Zhou, Calculation of resonance driving terms for the SuperKEKB using PTC, Talk presented at the SuperKEKB mini optics meeting, KEK, May. 26, 2016.
D. Zhou, Analysis of field data of the wigglers in SuperKEKB LER, Talk presented at the SuperKEKB mini optics meeting, KEK, May. 26, 2016.
Y. Zhang and D. Zhou, Application of differential evolution algorithm in future collider optimization, Slides, in Proceedings of IPAC'16, Busan, Korea, May. 08-13, 2016.
Y. Wang, Optimization of the IR in SuperKEKB LER, Talk presented at the SuperKEKB optics meeting, KEK, Nov. 18, 2015.
D. Zhou, Ideas on beam dynamics issues in SuperKEKB and benchmark of SAD and PTC, Talk presented at the SuperKEKB mini optics meeting, KEK, Aug. 20, 2015.
D. Zhou, Linear fringe map for a quadrupole, Talk presented at the SuperKEKB mini optics meeting, KEK, Jun. 18, 2015.
D. Zhou, Issues on beam dynamics in SuperKEKB: Hard-edge dipole fringe and FMA, Talk presented at the SuperKEKB optics meeting, KEK, Nov. 27, 2014.
Y. Ohnishi, Optics Issues, Talk presented at the 19th KEKB Accelerator Review Committee, KEK, Mar. 3, 2014.
Y. Ohnishi, Status of Optics Design, Talk presented at the 17th B2GM meeting, KEK, Feb. 4-8, 2014.

1.3 Beam-beam interaction and luminosity

D. Zhou, Beam-beam experience at KEKB, Talk presented at the International EIC Beam-beam Task Force, Jun. 28, 2024, BNL.
D. Zhou, K. Ohmi, Y. Funakoshi, Y. Ohnishi, Luminosity performance of SuperKEKB, Journal of Instrumentation, volume 19, page T02002. IOP Publishing, 2024.
D. Zhou, Beam-beam effects at SuperKEKB: simulations and experimental results, Talk presented at the International Workshop on Future Tau Charm Facilities, Jan. 16, 2024, USTC, Hefei, China.
Demin Zhou, Kazuhito Ohmi, Yoshihiro Funakoshi, Yukiyoshi Ohnishi, Yuan Zhang, Simulations and experimental results of beam-beam effects in SuperKEKB, Phys. Rev. Accel. Beams 26, 071001 (2023).
D. Zhou, Beam-beam at SuperKEKB, Talk presented at EIC beam-beam meeting, BNL, Nov. 2, 2022.
D. Zhou, Beam-beam interaction in SuperKEKB: simulations and experimental results, Talk presented at 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders (eeFACT2022), Sep. 14, 2022, INFN-LNF, Frascati, Italy.
D. Zhou, Y. Funakoshi, K. Ohmi, Y. Ohnishi, and Y. Zhang, Beam-beam Interaction in SuperKEKB: Simulations and Experimental Results, in Proceedings of 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders (eeFACT2022), Sep. 14, 2022, INFN-LNF, Frascati, Italy.
D. Zhou, Y. Funakoshi, K. Ohmi, Y. Ohnishi, and Y. Zhang, Simulations and Measurements of Luminosity at SuperKEKB, in Proceedings of IPAC2022, Bangkok, Thailand, 2022.
D. Zhou, Updates on beam-beam simulations and recent results of machine studies, Talk presented at the 9th meeting of beam-beam workgroup, Apr. 26, 2022, KEK.
D. Zhou, Updates on beam-beam simulations and recent results of machine studies, Talk presented at the 8th meeting of beam-beam workgroup, Mar. 30, 2022, KEK.
D. Zhou, Updates on beam-beam simulations and results of recent beam-beam machine study, Talk presented at the 6th meeting of beam-beam workgroup, Jan. 25, 2022, KEK.
D. Zhou, CW beam physics analysis, Talk presented at the Mini-workshop on Accelerator Physics: Key Beam Physics and Technologies Issues for Colliders, Jan. 13, 2022, HKUST IAS, Hongkong, China.
D. Zhou, Updates on beam-beam simulations and recent machine studies related to beam-beam, Talk presented at the 5th meeting of beam-beam workgroup, Dec. 15, 2021, KEK.
D. Zhou, Updates on beam-beam simulations and recent machine status related to beam-beam, Talk presented at the 4th meeting of beam-beam workgroup, Nov. 25, 2021, KEK.
D. Zhou, Beam-beam simulations and measurements at SuperKEKB, Talk presented at the 2021 International Workshop on the High Energy Circular Electron Positron Collider, Nov. 08, 2021.
D. Zhou, Updates on beam-beam simulations for SuperKEKB, Talk presented at the 3rd meeting of beam-beam workgroup, Oct. 28, 2021, KEK.
D. Zhou, Beam-beam simulations for KEKB and SuperKEKB, Talk presented at the EIC Accelerator Partnership Workshop, Oct. 27, 2021.
D. Zhou, Updates on beam-beam simulations for SuperKEKB, Talk presented at the 2nd meeting of beam-beam workgroup, Sep. 28, 2021, KEK.
D. Zhou, Practical experience from beam-beam simulations vs reality in (Super)KEKB, Talk presented at the EPFL-LPAP FCC-ee Software Framework Meeting, Sep. 16, 2021.
D. Zhou, Beam-beam simulations for SuperKEKB, Talk presented at the 1st meeting of beam-beam workgroup, Aug. 24, 2021, KEK.
D. Zhou, Simulations of beam-beam effects, Talk presented at the SuperKEKB optics meeting, KEK, Aug. 08, 2019.
D. Zhou, Simulations of beam-beam effects, Talk presented at the 1st SuperKEKB Beam Dynamics Mini-Workshop, KEK, Jul. 17, 2019.
D. Zhou, Summary of machine studies, Talk presented at the SuperKEKB optics meeting, KEK, Jul. 04, 2019.
D. Zhou, Summary of machine studies, Talk presented at the SuperKEKB commissioning meeting, KEK, Jun. 24, 2019.
D. Zhou, Recent results of beam-beam simulations for SuperKEKB, Talk presented at the 2nd SuperKEKB beam dynamics workgroup meeting, KEK, Apr. 16, 2019.
D. Zhou, Beam-beam simulations for SuperKEKB Phase-3, Talk presented at the SuperKEKB optics meeting, KEK, Apr. 04, 2019.
D. Zhou, Beam-beam simulations for SuperKEKB Phase-3, Talk presented at the SuperKEKB optics meeting, KEK, Mar. 07, 2019.
D. Zhou, Beam-beam simulations for SuperKEKB Phase-3, Talk presented at the SuperKEKB optics meeting, KEK, Feb. 21, 2019.
D. Zhou, Beam-beam simulations for SuperKEKB Phase-3, Talk presented at the SuperKEKB optics meeting, KEK, Jan. 31, 2019.
D. Zhou, Beam-beam simulations for SuperKEKB Phase-3, Talk presented at the SuperKEKB optics meeting, KEK, Jan. 17, 2019.
D. Zhou, Beam-beam simulations for SuperKEKB Phase-3, Talk presented at the SuperKEKB optics meeting, KEK, Dec. 20, 2018.
D. Zhou, Beam-beam simulations for SuperKEKB Phase-3, Talk presented at the SuperKEKB optics meeting, KEK, Dec. 13, 2018.
D. Zhou, Weak-strong beam-beam simulations for SuperKEKB Phase-2 - Updates, Talk presented at the SuperKEKB beam-beam performance meeting, KEK, Jun. 21, 2018.
D. Zhou , Weak-strong beam-beam simulations for SuperKEKB Phase-2, Talk presented at the SuperKEKB beam-beam performance meeting, KEK, Jun. 14, 2018.
K. Hirosawa et al., The influence of higher order multipoles of IR magnets on luminosity for SuperKEKB, in Proceedings of IPAC'18, Vancouver, BC, Canada, 2018.
D. Zhou, Interplay of beam-beam, lattice nonlinearity and space charge effects in the SuperKEKB collider, in Proceedings of IPAC'15, May 3-8, 2015; Invited oral talk.
D. Zhou, Theories on beam-beam effects - I, Talk presented at the Accelerator theory group meeting, Jan. 21, 2015.
D. Zhou, Luminosity calculations and analysis of lattice nonlinearity for SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Apr. 17, 2014.
K. Ohmi, Tolerance for beam-beam and ecloud, Talk presented at the ICFA Mini-Workshop on Commissioning of SuperKEKB and e+e- Colliders, KEK, Nov. 11-13, 2013.
D. Zhou, Beam-beam, lattice nonlinearity and space charge at SuperKEKB, Talk presented at the ICFA Mini-Workshop on Commissioning of SuperKEKB and e+e- Colliders, KEK, Nov. 11-13, 2013.
A. Morita, Beam-beam + Dynamic Aperture, Talk presented at the ICFA Mini-Workshop on Commissioning of SuperKEKB and e+e- Colliders, KEK, Nov. 11-13, 2013.
D. Zhou, Intra-beam scattering, space charge and beam-beam at SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Oct. 23, 2013.
D. Zhou, Beam-beam effects at SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Oct. 08, 2013.
H. Sugimoto, LER tune survey with beam-beam, Talk presented at the SuperKEKB optics meeting, KEK, Oct. 08, 2013.
D. Zhou, Beam-beam effects at SuperKEKB, Talk presented at the SLAC-KEKB collaboration meeting, KEK, Sep. 13, 2013.
Y. Funakoshi, Injection Beam Loss Simulation - LER case, Talk presented at the SuperKEKB optics meeting, KEK, Sep. 05, 2013.
Y. Ohnishi, Dynamic Aperture with Beam-Beam, Talk presented at the SuperKEKB optics meeting, KEK, Sep. 05, 2013.
D. Zhou, Beam-beam involved effects at SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Sep. 05, 2013.
D. Zhou et al., Crosstalk Between Beam-beam Interaction and Lattice Nonlinearities in the SuperKEKB, in Proceedings of IPAC'13, Shanghai, China.
D. Zhou, Crosstalk between beam-beam interaction and lattice nonlinearities in the SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Feb. 05, 2013.
D. Zhou, Crosstalk between beam-beam interaction and lattice nonlinearities in the SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Jan. 17, 2013.
D. Zhou, Crosstalk between beam-beam interaction and lattice nonlinearities, Talk presented at the SuperKEKB optics meeting, KEK, Dec. 21, 2012.
D. Zhou, First results of FMA for SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Jul. 17, 2012.
K. Ohmi et al., Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation, Phys. Rev. ST Accel. Beams 14, 111003 (2011).
D. Zhou et al., Effects of Linear and Chromatic X-Y Couplings in the SuperKEKB, in Proceedings of IPAC'10, Kyoto, Japan.
D. Zhou et al., Simulations of beam-beam effect in the presence of general chromaticity, Phys. Rev. ST Accel. Beams 13, 021001 (2010).
K. Ohmi, Review of Crab crossing in KEKB, In Beam Dynamics Newsletter No. 52, August, 2010.
D. Zhou, Chromatic aberrations in the KEKB, Talk presented at SLAC, Aug. 20, 2010.
K. Ohmi, Beam simulations for the nano beam scheme, Talk presented at the 15th KEKB Accelerator Review Committee, KEK, Feb. 15-17, 2010.
K. Ohmi, Study of various collision schemes for Super KEKB, In Beam Dynamics Newsletter No. 48, April, 2009.
K. Ohmi, Collision Scheme in Upgrade and Super KEKB, Talk presented at the 14th KEKB Accelerator Review Committee, KEK, Feb. 9-11, 2009.
K. Ohmi, Beam-beam effects in crab crossing, Talk presented at the 13th KEKB Accelerator Review Committee, KEK, Nov. 29 - Dec. 05, 2007.
K. Ohmi, Beam-beam effect with Crab cavity, Talk presented at the 12th KEKB Accelerator Review Committee, KEK, Mar. 19-21, 2007.
Also see Beam Dynamics: Beam-beam and electron cloud .

1.4 Space charge

D. Zhou, Space charge effects on the main rings of SuperKEKB, Talk presented at the SuperKEKB optics meeting, KEK, Feb. 05, 2013.
Also see Beam Dynamics Issues in SuperKEKB, Beam Dynamics Issues in SuperKEKB: beam-beam, lattice nonlinearities, and space charge, Intra-beam scattering, space charge and beam-beam at SuperKEKB, Beam-beam, lattice nonlinearity and space charge at SuperKEKB .

1.5 Impedance budget

D. Zhou, Benchmark of wake calculation for a small-gap collimator, Talk presented at the SuperKEKB TMCI workgroup meeting, Nov. 09, 2021, KEK.
D. Zhou, Impedance model for SuperKEKB LER, Talk presented at the SuperKEKB TMCI workgroup meeting, Nov. 09, 2021, KEK.
D. Zhou, Impedance calculations of collimators with simple geometries, Talk presented at the SuperKEKB TMCI workgroup meeting, Oct. 01, 2021, KEK.
D. Zhou, Impedance model for SuperKEKB, Talk presented at the SuperKEKB TMCI workgroup meeting, Aug. 27, 2021, KEK.
D. Zhou, Impedance issues in KEKB and SuperKEKB, Talk presented at the TWIICE 2 workshop, Abingdon, Oxfordshire, UK, Feb. 08, 2016.
D. Zhou, Impedance model for SuperKEKB, Talk presented at the SuperKEKB mini optics meeting, KEK, Feb. 26, 2015.
D. Zhou, Impedance and instability issues in SuperKEKB, Talk presented at the Theory club, FEL & Beam physics Department, SLAC, Aug. 1, 2014.
D. Zhou et al., Impedance calculation and simulation of microwave instability for the main rings of SuperKEKB, in Proceedings of IPAC'14, Dresden, Germany.
D. Zhou, Impedance Issues in SuperKEKB - With updated results, Talk presented at the SuperKEKB optics meeting, KEK, Apr. 17, 2014.
D. Zhou, Impedance Issues in SuperKEKB, Talk presented at the 19th KEKB Accelerator Review Committee, KEK, Mar. 3, 2014.
T. Ishibashi, Progress of SuperKEKB collimator, Talk presented at the 18th KEKB Accelerator Review Committee, KEK, Mar. 4, 2013.
K. Shibata, Estimation of Impedances & Loss factors of SuperKEKB LER, Talk presented at the 15th KEKB Accelerator Review Committee, KEK, Feb. 15-17, 2010.
K. Shibata et al., Loss factor and impedance of IR beam ducts for SuperKEKB and KEKB, in Proceedings of IPAC'10, Kyoto, Japan.
Also see Simulation of Microwave Instability in LER of KEKB And SuperKEKB .

1.6 Single- and multi-bunch impedance-driven instabilities

Demin Zhou, Gaku Mitsuka, Takuya Ishibashi, Karl Bane, Potential-Well bunch lengthening in electron storage rings, in Proceedings of the 20th Annual Meeting of Particle Accelerator Society of Japan, August 29 - September 1, 2023, Funabashi, Japan.
D. Zhou, T. Ishibashi, M. Migliorati, G. Mitsuka, and M. Tobiyama, Transverse coupled-bunch instability driven by the resistive wall impedance at SuperKEKB, in Proceedings of IPAC2023, Venice, Italy, May 2023.
D. Zhou, Coupled-bunch instability driven by resistive wall impedance at SuperKEKB main rings, Talk presented at the Mini-workshop on impedance modeling and impedance effects at SuperKEKB and future colliders, KEK, Dec. 15, 2022.
D. Zhou, Transverse coupled-bunch instability driven by resistive wall impedance, Talk presented at the SuperKEKB MDI meeting, KEK, Aug. 05, 2021.
D. Zhou, Impedance issues and other collective effects, Supplementary, Talk presented at the 1st SuperKEKB Beam Dynamics Mini-Workshop, KEK, Jul. 17, 2019.
K. Ohmi and D. Zhou, Impedance study summary, Talk presented at the SuperKEKB Phase2 summary meeting, KEK, Sep. 06, 2018.
K. Bane and D. Zhou, Comparison of machine impedance calculation with beam based measurements, Talk presented at the International Workshop on Impedances and Beam Instabilities in Particle Accelerators, Benevento, Italy, 20 September, 2017.
D. Zhou and K. Bane, Revisit of HOM power data in KEKB LER, Memo for discussion, Jun. 22, 2017.
D. Zhou and K. Bane, Revisit of impedance measurements in KEKB, Memo for discussion, Jun. 16, 2017.
D. Zhou, Updated results for bunch length measurements using streak camera, Talk presented at the SuperKEKB mini optics meeting, KEK, Sep. 08, 2016.
G. Stupakov and D. Zhou, Transverse wakefields due to asymmetric protrusions into a vacuum chamber, Nucl. Instrum. Meth. A 764 (2014) 378-382.
L. Wang et al., Validation of the Microwave Instability in the Damping Ring of SuperKEKB using VFP Solver, in Proceedings of IPAC'13, Shanghai, China.
L. Wang, Update of Microwave Instability Study in SuperKEKB Damping Ring Using Vlasov Fokker-Planck Solver, Talk presented at the KEKB damping ring meeting, KEK, Jun. 15, 2012.
D. Zhou et al., Beam Tilt due to Transverse Wakefields for DAFNE, SuperB, KEKB and SuperKEKB, in Proceedings of IPAC'11, San Sebastian, Spain.
D. Zhou, Loss factor measurement at KEKB LER, Analysis of experimental data taken by Gated BPMs, KEK, Jan. 29, 2010. Also see Loss factor measurement at KEKB LER.
D. Zhou et al., Simulation of Microwave Instability in LER of KEKB And SuperKEKB, in Proceedings of ICAP09, San Francisco, CA, US; Invited oral talk.
Y. Cai et al., Potential-well distortion, microwave instability, and their effects with colliding beams at KEKB, Phys. Rev. ST Accel. Beams 12, 061002 (2009).
D. Zhou, Longitudinal single-bunch instabilities in the LER of KEKB, Talk presented at the Accelerator Physics Seminar, KEK, Jul. 23, 2009.
Also see Coherent Synchrotron Radiation Predicted at the SuperKEKB Damping Ring, Impedance Issues in SuperKEKB .

1.7 Coherent synchrotron radiation

D. Zhou, Simulations with CSR, Talk presented at the Beam Injection TF meeting, Jun. 17, 2022, KEK.
D. Zhou, CSR in the RTL of SuperKEKB, Talk presented at the Emittance preservation task force meeting, KEK, Sep. 19, 2018.
D. Zhou, CSR in the RTL of SuperKEKB, Talk presented at the Emittance preservation task force meeting, KEK, Sep. 13, 2018.
H. Ikeda et al., Coherent Synchrotron Radiation Predicted at the SuperKEKB Damping Ring, in Proceedings of IPAC'13, Shanghai, China.
D. Zhou et al., CSR in the SuperKEKB Damping Ring, in Proceedings of IPAC'10, Kyoto, Japan.
Also see A Few Issues on the Upgrade of KEKB B-Factory .

1.8 Electron cloud

Y. Suetsugu, Present status of the SuperKEKB Vacuum System, Talk presented at the 21th KEKB Accelerator Review Committee, KEK, Jun. 13, 2016.
K. Ohmi and D. Zhou, Study of electron cloud effects in SuperKEKB, in Proceedings of IPAC'14, Dresden, Germany.
D. Zhou, Ecloud effects in SuperKEKB LER, Study memo, Sep. 05, 2013.
D. Zhou, Ecloud effects in SuperKEKB LER, Talk presented at SuperKEKB optics meeting, KEK, Jun. 11, 2013.
Y. Suetsugu et al., Construction of the SuperKEKB Vacuum System - II, in Proceedings of the 10th Annual Meeting of Particle Accelerator Society of Japan [in Japanese].
Y. Suetsugu et al., Design and construction of the SuperKEKB vacuum system, J. Vac. Sci. Technol. A 30, 031602 (2012).
Y. Susaki et al., Electron Cloud Instability in SuperKEKB Low Energy Ring, in Proceedings of IPAC'10, Kyoto, Japan.
Y. Suetsugu, R&D results at KEKB e+ ring and the plan for the future Super KEKB, Talk presented at the Low Emittance Rings Workshop 2010 (LER2010), CERN, Jan. 13, 2010.
K. Ohmi et al., Head-Tail Instability Caused by Electron Clouds in Positron Storage Rings, Phys. Rev. Lett. 85, 3821-3824 (2000).
Also see Beam Dynamics Issues for Nano-Beam Scheme, Tolerance for beam-beam and ecloud .

1.9 Fast ion

Also see Beam Dynamics Issues in SuperKEKB, Tolerance for beam-beam and ecloud .

1.10 Intra-beam scattering

D. Zhou, Effects of intra-beam scattering in SuperKEKB, Study memo, Mar. 25, 2013.
Also see Intra-beam scattering, space charge and beam-beam at SuperKEKB .

1.11 Crab waist

Y. Ohnishi, Study of Crab-Waist Scheme, Talk presented at the SuperKEKB optics meeting, KEK, Apr. 17, 2014.

1.12 Polarized electron beam

D. Zhou, SuperKEKB upgrade with polarized electron beam - Beam optics and spin tracking software, Talk presented at the Belle 2 collaboration meeting, KEK, Oct. 23, 2019.
D. Zhou, Brief introduction to SuperKEKB and issues on possible upgrade with polarized electron beam, Talk presented at the First meeting on polarized electron beam for SuperKEKB, KEK, Feb. 6, 2018.

1.13 Beam instrumentation

D. Zhou et al., Analysis of beam aborts at SuperKEKB with the bunch current and oscillation recorder, in Proceedings of PASJ 2021, Aug. 9-12, 2021, Poster.
D. Zhou et al., Analysis of BOR/BCM data for beam aborts: Comparison of two cases, Talk presented at the SuperKEKB KCG meeting, Jun. 23, 2021.
D. Zhou et al., Categorization of aborts based on patterns of BOR/BCM data, Talk presented at the MDI Task-force meeting, May. 27, 2021.

2. Beam physics at future circular colliders

2.1 Overview

K. Oide, FCC-ee Machine Layout and Beam Optics + Matching with synchrotron motion, Talk presented at the KEK Accelerator Seminar, KEK, Apr. 27, 2016.
Y. Zhang, Status of CEPC Accelerator (Physics) Study, Talk presented at the Accelerator Physics Seminar, KEK, Mar. 9, 2016.
Future e+/e- Ring Colliders, ICFA beam dynamics newsletters 67, Edited by Y. Funakoshi, August 2015.
D. Zhou, An overview of recent design studies on future circular colliders, Talk presented at the Accelerator Physics Seminar, KEK, Jan. 16, 2014.
Also see Final focus & Injection - Experiences at KEKB/SuperKEKB .

2.2 Beam-beam interaction and luminosity

D. Zhou, Beam-beam simulations with lattice for FCC-ee, Talk presented at the 39th FCC-ee optics design meeting, CERN, Sep. 09, 2016.
D. Zhou, Beam-beam simulations and nonlinear lattice analysis for FCC-ee, Talk presented at the 38th FCC-ee optics design meeting, CERN, Sep. 09, 2016.
D. Zhou, Interplay of the beam-beam effect and the lattice nonlinearity, Talk presented at the FCC week 2016, Rome, Apr. 11-15, 2016.
D. Zhou, Beam-beam simulations and analysis of lattice nonlinearity using PTC, Talk presented at the 28th FCC-ee optics design meeting, CERN, Apr. 04, 2016.
D. Zhou, Beam-beam simulations for FCC-ee, Talk presented at the FCC-ee beam-beam meeting, CERN, Feb. 05, 2016, with update Updates.
D. Zhou, Beam-beam simulations for FCC-ee (tt), Talk presented at the 8th FCC-ee optics design meeting, CERN, Aug. 21, 2015.
D. Zhou, Beam-beam simulations for FCC-ee (tt) - Preliminary results, Talk presented at the 4th FCC-ee optics design meeting, CERN, Jul. 03, 2015.
Y. Zhang, Simulation of Beam-Beam Effect & Optimization of Machine Parameters, Talk presented at the Third Workshop on Future High Energy Circular Colliders, IHEP, Mar. 19, 2014.
Y. Zhang, Preliminary simulation of Beam-beam effect at CEPC, Talk presented at the International Workshop on Future High Energy Circular Colliders, IHEP, Dec. 16-17, 2013.
D. Zhou, Beam-beam study of TLEP H and SuperKEKB, Talk presented at the International Workshop on Future High Energy Circular Colliders, IHEP, Dec. 16-17, 2013.

2.3 HE-LHC

D. Zhou, Arc Optics and Geometry, Talk presented at the HE-LHC Review meeting, CERN, Dec. 11, 2017.
D. Zhou, Optics update, Talk presented at the 22nd HE-LHC design meeting, CERN, Nov. 14, 2017.
D. Zhou, Optics update, toward V0.2, Talk presented at the 21st HE-LHC design meeting, CERN, Oct. 31, 2017.
D. Zhou, On MADX sequence file and optics matching for HE-LHC, Talk presented at the 6th HE-LHC optics meeting, CERN, Oct. 17, 2017.
D. Zhou, Ring geometry and First HE-LHC optics release, V0.1, Talk presented at the 20th HE-LHC design meeting, CERN, Oct. 10, 2017.
D. Zhou, Toward an optics baseline for HE-LHC, Talk presented at the 5th HE-LHC optics meeting, CERN, Sep. 26, 2017.
D. Zhou, Toward an optics baseline for HE-LHC, Talk presented at the 19th HE-LHC design meeting, CERN, Sep. 22, 2017.
D. Zhou, Possible layout for arc cells of HE-LHC, Talk presented at the 18th HE-LHC design meeting, CERN, Aug. 22, 2017.
D. Zhou, Possible layout for arc cells of HE-LHC - With updates - 2 , Talk presented at the 3rd HE-LHC optics meeting, CERN, Aug. 15, 2017.
D. Zhou, Possible layout for arc cells of HE-LHC - With updates, Talk presented at the 2nd HE-LHC optics meeting, CERN, Aug. 8, 2017.
D. Zhou, Possible layout for arc cells of HE-LHC, Talk presented at the 1st HE-LHC optics meeting, CERN, Jul. 25, 2017.
D. Zhou, Dynamic aperture update, Talk presented at the 17th HE-LHC design meeting, CERN, Jul. 18, 2017.
D. Zhou, Dynamic aperture update, Talk presented at the 16th HE-LHC design meeting, CERN, Jul. 6, 2017.
D. Zhou, Nonlinear analysis and dynamic aperture - Update of talk at FCC week 2017, Talk presented at the 15th HE-LHC design meeting, CERN, Jun. 8, 2017.
D. Zhou, Nonlinear analysis and dynamic aperture, Talk presented at the FCC Week 2017, Berlin, Jun. 1, 2017.
D. Zhou, Optics status and progress, Talk presented at the 14th HE-LHC design meeting, CERN, May 23, 2017.
D. Zhou, Optics status and plans, Talk presented at the 13th HE-LHC design meeting, CERN, May 11, 2017.
D. Zhou, Optics update for HE-LHC, Talk presented at the 12th HE-LHC design meeting, CERN, Apr. 26, 2017.
D. Zhou, Optics update for HE-LHC, Talk presented at the 11th HE-LHC design meeting, CERN, Apr. 3, 2017.
D. Zhou, Optics update for HE-LHC, Talk presented at the 10th HE-LHC design meeting, CERN, Mar. 23, 2017.
D. Zhou, Start and issues of HE-LHC optics study, Talk presented at the 9th HE-LHC design meeting, CERN, Feb. 1, 2017.

3. Useful links

3.1 Webpages at KEK

3.2 Computing codes

3.3 Work groups of accelerator physics

Indico webpage for subgroups of SuperKEKB International Task Force.

4. Related talks and publications

4.1 CSR and CWR

D. Zhou, Coherent synchrotron radiation instability in low-emittance electron storage rings, Talk presented at Beam Physics Club Meeting, ELPH, Tohoku University, Sendai, Mar. 4, 2024.
D. Zhou, CSR effects in low-emittance electron storage rings, Talk presented at 9th Low Emittance Rings workshop, CERN, Geneva, Switzerland, Feb. 13-16, 2024.
A. Blednykh, M. Blaskiewicz, R. Lindberg, D. Zhou, Microwave instability threshold from coherent wiggler radiation impedance in storage rings, Phys. Rev. Accel. Beams 26, 051002 (2023).
D. Zhou, CWR effect at the storage ring cooler, Talk presented at EIC Ring Cooler meeting, BNL, Oct. 27, 2022.
D. Zhou, CSR effect in electron storage rings, Talk presented at USSR meeting, DESY, Nov. 25, 2021.
D. Zhou, CSR effect in electron storage rings, Talk presented at USSR meeting, DESY, Oct. 21, 2021.
G. Stupakov and D. Zhou, Analytical theory of coherent synchrotron radiation wakefield of short bunches shielded by conducting parallel plates, Phys. Rev. ST Accel. Beams 19, 044402 (2016).
G. Stupakov, CSR radiation and wake problems in free-electron laser LCLS-II at SLAC, Talk presented at the Accelerator Physics Seminar, November 17, 2015, KEK, Japan.
Y. Cai, Scaling law of coherent synchrotron radiation in a rectangular chamber, Phys. Rev. ST Accel. Beams 17, 020702 (2014).
D. Zhou et al., Calculation of Coherent Synchrotron Radiation Impedance for a Beam Moving in a Curved Trajectory, Jpn. J. Appl. Phys. 51 (2012) 016401.
L. Wang, CSR computation with arbitrary cross-section of the beam pipe, Talk presented at the KEKB accelerator physics seminar, KEK, Mar. 14, 2012.
D. Zhou et al., An Alternative 1D Model for CSR with Chamber Shielding, in Proceedings of IPAC'12, New Orleans, Louisiana, USA; Contributed oral talk.
D. Zhou et al., Calculation of Coherent Wiggler Radiation using Eigenfunction Expansion Method, in Proceedings of IPAC'12, New Orleans, Louisiana, USA.
D. Zhou, CSR in SuperKEKB and SuperB DR, 2nd SuperB collaboration meeting at INFN-LNF, Dec. 15, 2011.
D. Zhou, CSR calculations using mesh method, Talk presented at Beam physics club meeting, ELPH, Tohoku University, Sendai, Dec. 09, 2011.
D. Zhou, Coherent Synchrotron Radiation and Microwave Instability in Electron Storage Rings, Ph.D. thesis, SOKENDAI and KEK, 2011.
D. Zhou, Calculation of CSR Impedance Using Mesh Method, Talk presented at ERL2011, Paper, KEK, Tsukuba, Japan, Oct. 20, 2011.
D. Zhou et al., Calculation of longitudinal CSR impedance in curved chamber, in Proceedings of the 8th Annual Meeting of Particle Accelerator Society of Japan (PASJ2011, August 1-3, 2011, Tsukuba, Japan).
D. Zhou et al., CSR Impedance for an Ultrarelativistic Beam moving in a Curved Trajectory, in Proceedings of IPAC'11, San Sebastian, Spain.
D. Zhou et al., Interference of CSR Fields in a Curved Waveguide, in Proceedings of IPAC'11, San Sebastian, Spain.
D. Zhou, Numerical Calculations of CSR Impedance, Talk presented at SLAC, Mar. 11, 2011.
K. Bane et al., Threshold studies of the microwave instability in electron storage rings, Phys. Rev. ST Accel. Beams 13, 104402 (2010).
G. Stupakov and D. Zhou, Longitudinal impedance due to coherent undulator radiation in a rectangular waveguide, SLAC-PUB-14332, also Technical Report KEK Preprint 2010-43.
K. Yokoya, CSR Calculation in Paraxial Approximation, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
K. Oide, A Calculation of CSR, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
G. Stupakov, Mode expansion method for calculation of CSR impedance, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
T. Agoh, Error of paraxial approximation, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
D. Zhou, Numerical simulations of CSR impedance, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
H. Ikeda, CSR @ SuperKEKB Damping Ring, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
T. Miyajima, CSR calculation in ERL merger section, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
M. Shimada, X and gamma-ray due to Compton scattering of CSR, Talk presented at the CSR mini-Workshop, KEK, Nov. 8, 2010.
F. Zimmermann, Coherent synchrotron radiation for damping rings: assessment of theories & experimental proposal, IWLC2010, CICG, Geneva, 21 October 2010.
F. Zimmermann, CSR Instability Studies for SuperKEKB, SuperKEKBDamping Ring Meeting, 16 July 2010.
G. Stupakov, Electromagnetic Radiation in Accelerator Physics, Rev. Accl. Sci. Tech., 03, 39 (2010).
G. Stupakov and I. Kotelnikov, Calculation of coherent synchrotron radiation impedance using the mode expansion method, Phys. Rev. ST Accel. Beams 12, 104401 (2009).
T. Agoh, Steady fields of coherent synchrotron radiation in a rectangular pipe, Phys. Rev. ST Accel. Beams 12, 094402 (2009).
C. Wang and J. Hirshfield, Theory for wakefields in a multizone dielectric lined waveguide, Phys. Rev. ST Accel. Beams 9, 031301 (2006).
T. Agoh and K. Yokoya, Calculation of coherent synchrotron radiation using mesh, Phys. Rev. ST Accel. Beams 7, 054403 (2004).

4.2 Collective effects: Space charge, impedance theories, impedance effects

Demin Zhou, Takuya Ishibashi, Gaku Mitsuka, Makoto Tobiyama, Karl Bane, Linhao Zhang, Theories derived from Haissinski equation and their applications to electron storage rings, Nuclear Instruments and Methods in Physics Research A 1063 (2024) 169243.
D. Zhou, Impedance modeling and impedance effects, Presented at Accelerator physics seminar, Nov. 10, 2023, USTC, Hefei, China.
D. Zhou, Principles derived from Haissinski equation for electron storage rings, Presented at BNL, Jul. 3, 2023.
D. Zhou, Tracking simulations for cERL-FEL: Detailed comparison of SAD and GPT with theoretical explanations, Presented at cERL-FEL meeting, Jan. 20, 2021.
D. Zhou, Theories and simulations of space charge and coherent synchrotron radiation effects, Presented at Beam physics club meeting, Dec. 08, 2020.
D. Zhou, Space charge: Theories and comparison of ELEGANT, GPT and SAD, Presented at cERL-FEL meeting, Oct. 22, 2020.
D. Zhou, Tracking simulations for cERL-FEL: Compare results of SAD, ELEGANT and GPT, Presented at cERL-FEL meeting, Sep. 24, 2020.
D. Zhou, Tracking simulations for cERL-FEL with TSC using SAD, Presented at cERL-FEL meeting, Aug. 06, 2020.
G. Stupakov, New approach to numerical solution of the microwave instability, Talk presented at Accelerator Physics Seminar, KEK, Oct. 28, 2010.

4.3 SAD

K. Oide, A few Evolutions in SAD, SAD seminar, KEK, Jan. 10, 2017.
K. Oide, SAD: Some details, Accelerator physics seminar, KEK, Jun. 2, 2016.
D. Zhou et al., Lattice translation between accelerator simulation codes for SuperKEKB, in Proceedings of IPAC'16, Busan, Korea, May. 08-13, 2016.
K. Oide, SAD Seminar, and Example of SAD script, SAD seminar, KEK, Dec. 24, 2015.
D. Zhou et al., Benchmark of SAD, Bmad and PTC for sler_1689, Study memo, KEK, Oct. 12, 2015.
A. Morita, Introduction to SAD, SAD school meeting, KEK, Jun. 12, 2015 [in Japanese].
D. Zhou and K. Oide, Maps used in SAD (Draft), Part of SAD manual, KEK, Jun. 4, 2015.
K. Hirata, Analysis of Beam-Beam Interaction with a Large Crossing Angle, Phys. Rev. Lett. 74, 2228-2231 (1995).
K. Ohmi et al., From the beam-envelope matrix to synchrotron-radiation integrals, Phys. Rev. E 49, 751-765 (1994).
K. Hirata et al., A symplectic beam-beam interaction with energy change, Particle Accelerators, Vol.40, pp.205-228 (1993).
E. Forest et al., Leading Order Hard Edge Fringe Fields Effects Exact in (1 + δ) and Consistent with Maxwell's Equations for Rectilinear Magnets, Nucl.Instrum.Meth. A269 (1988) 474.

4.4 Bmad

D. Sagan, Accelerator & X-ray modeling Using the Bmad Software Library, Accelerator physics seminar, KEK, Sep. 19, 2014.

4.5 Nonlinear dynamics

J. Bengtsson, The Sextupole Scheme for the Swiss Light Source (SLS): An Analytic Approach, SLS Note 9/97, Mar.7, 1997.
Y.T. Yan et al., Resonance basis maps and nPB tracking for dynamic aperture studies, SLAC-PUB-7179, June, 1996.
N. Merminga et al., Hamiltonian Approach to Distortion Functions, FERMILAB-FN-493, Mar. 1992.

4.6 Lattice translation

D. Zhou, Translation among SAD, MAD-X and Bmad, Workshop SAD2019, KEK, Sep. 19, 2019.
D. Zhou, SAD-MAD converter survey and needs, FCC-ee design meeting, CERN, Mar. 03, 2017.
D. Zhou, SuperKEKB lattice translation, MAD-X meeting, CERN, Sep. 22, 2016.

4.7 FELs

G. Stupakov, Echo-Enabled Harmonic Generation for seeded FELs - theory and experiment, Talk presented at Accelerator Physics Seminar, KEK, Nov. 5, 2010.

4.8 Miscellaneous

D. Zhou et al., Linear Fringe Field Effects of Quadrupoles, arXiv:1404.4687 [physics.acc-ph].
Y. Seimiya et al., Symplectic Expression for Chromatic Aberrations, Prog. Theor. Phys. (2012) 127 (6): 1099-1119.
L. Wang, Beam-ion Instabilities in SPEAR3, Talk presented at the KEKB accelerator physics seminar, KEK, Feb. 15, 2012.
D. Zhou et al., Explicit maps for the fringe field of a quadrupole, in Proceedings of IPAC'10, Kyoto, Japan.

5. Scientific activities

6. Note

Some of the above materials are collected without the permission of the copyright holders. If there are possible copyright violations somewhere on this webpage, please feel free to contact D. Zhou.