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55th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders – Higgs Factory (HF2014)

chaired by Weiren Chou (FNAL), Qing QIN (Institute of High Energy Physics)

from Thursday, October 9, 2014 at 07:30 to Sunday, October 12, 2014 at 19:00 (Asia/Shanghai)

Description

The 55th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders – Higgs Factory (HF2014) will take place October 9-12, 2014 in Beijing, China and be hosted by the Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS).  Go to the web page.

Go to day

Thursday, October 9, 2014

07:30 - 08:30 Registration

08:30 - 10:05 Plenary Session 1

Convener:

Xinchou Lou

08:30 Welcome and introduction of IHEP(45’) 45'

Speaker:	Prof. Yifang Wang (IHEP)
Material:	Slides

09:20 A new paradigm: Role of electron-positron and hadron colliders (40’+5’) 45'

Speaker:	Prof. Shouhua Zhu (PKU)
Material:	Slides

10:05 - 10:30 Coffee (25’)

10:30 - 12:00 Plenary Session 2

Convener:

Philippe Lebrun

10:30 Status of FCC-ee physics studies (40’+5’) 45'

Speaker:	Alain Blondel (U. Geneva)
Material:	Slides

11:15 Status of CEPC physics and detector studies (40’+5’) 45'

Speaker:	Prof. Yuanning Gao (THU)
Material:	Slides

12:00 - 14:00 Lunch

14:00 - 15:30 Plenary Session 3

Convener:

Alain Blondel

14:00 Overview: FCC-ee (40’+5’) 45'

Speaker:	Dr. Frank Zimmermann (CERN)
Material:	Slides

14:45 Overview: CEPC (40’+5’) 45'

Speaker:	Dr. Qing Qin (IHEP)
Material:	Slides

15:30 - 16:00 Group photo & Coffee (30’)

16:00 - 17:30 Parallel Session 1: WG 1 – Parameters

Convener:

Eugene Levichev, Frank Zimmermann

16:00 (1) Physics motivation and requirements 30'

Speaker:	Alain Blondel (U. Geneva)
Material:	Slides slides-after-discussion

16:30 (2) Choice of circumference, minimum & maxim energy, number of collision points, and target luminosity 30'

Speaker:	Dr. Michael Koratzinos (U. Geneva)
Material:	Slides

17:00 (3) Ring circumference and two rings vs one ring 30'

Speaker:	Prof. Richard Talman (Cornell U.)
Material:	Slides

16:00 - 17:30 Parallel Session 1: WG 2 – Optics

Convener:

Kazuhito Ohmi, Yunhai Cai

16:00 (1) Overall consideration, main challenges and goals 22'

Speaker:	Yunhai Cai (SLAC)
Material:	Slides

16:22 (2) Single ring multi-bunch operation and beam separation 22'

Speaker:	Prof. Richard Talman (Cornell U.)
Material:	Slides

16:44 (3) Challenges and status of the FCC-ee lattice design 22'

Speaker:	Mr. Bastian Harer (CERN)
Material:	Slides

17:06 (4) Status of the CEPC lattice design 22'

Speaker:	Ms. Huiping Geng (IHEP)
Material:	Slides

18:00 - 19:45 Special Joint Session with LCWS2014: WG 10 – “Green” Accelerators

Convener:

Steve Peggs for HF2014, Hitoshi Hayano for LCWS2014

18:00 (1) Energy consumption and savings potential of CLIC 21'

Speaker:	Dr. Philippe Lebrun (CERN)
Material:	Slides

18:21 (2) A green CEPC using the power of nuclear waste 21'

Speaker:	Dr. Zhenchao Liu (IHEP)
Material:	Slides

18:42 (3) Sustainability for bosons: the need for an energy program for a future Higgs factory 21'

Speaker:	Mr. Thomas Parker (ESS)
Material:	Slides

19:03 (4) HEP future: to be green, or not to be? 21'

Speaker:	Dr. Denis Perret-Gallix (CERN)
Material:	Slides

19:24 (5) Current status of Green-ILC activities in Japan 21'

Speaker:	Takayuki Saeki (KEK)
Material:	Slides

20:00 - 21:30 Reception

Friday, October 10, 2014

08:30 - 10:00 Parallel Session 2: WG 1 – Parameters

Convener:

Eugene Levichev, Frank Zimmermann

08:30 (4) Beam-beam effects in high-energy colliders: crab waist vs. head-on 30'

Speaker:	Dmitry Shatilov (BINP)
Material:	Slides

09:00 (5) Optimizing beam intensity, number of bunches, bunch charge, and emittance 30'

Speaker:	Prof. Chuang Zhang (IHEP)
Material:	Slides

09:30 (6) Polarization issues in FCC-ee collider 30'

Speaker:	Eliana Gianfelice (FNAL)
Material:	Slides

08:30 - 10:00 Parallel Session 2: WG 2 – Optics

Convener:

Kazuhito Ohmi, Yunhai Cai

08:30 (5) Analysis of nonlinear dynamics 22'

Speaker:	Yunhai Cai (SLAC)
Material:	Slides

08:52 (6) Dynamic aperture optimization in SuperKEKB 22'

Speaker:	Dr. Yukiyoshi Ohnishi (KEK)
Material:	Slides

09:14 (7) The effect of IR imperfection on dynamic aperture in SuperKEKB / dynamic aperture study of CEPC 22'

Speaker:	Hiroshi Sugimoto (KEK)
Material:	pdf

09:36 (8) Beam lifetime and Injection consideration 22'

Speaker:	Mr. Xiaohao Cui (IHEP)
Material:	Slides

10:00 - 10:30 Coffee (30’)

10:30 - 12:00 Parallel Session 3: WG 1 – Parameters

Convener:

Eugene Levichev, Frank Zimmermann

10:30 (7) Constraints on the FCC-ee lattice from the compatibility with the FCC hadron collider 30'

Speaker:	Mr. Bastian Harer (CERN)
Material:	Slides

11:00 (8) Polarization issues and schemes for energy calibration 30'

Speaker:	Ivan Koop (BINP)
Material:	Slides

11:30 (9) Optimizing costs of construction and operation, possible construction time line 30'

Speaker:	Dr. Weiren Chou (FNAL)
Material:	Slides

10:30 - 12:00 Parallel Session 3: Joint Session of WG2 and WG3

Convener:

WG 2 – Optics (Conveners: Kazuhito Ohmi, Yunhai Cai) WG3 – IR and MDI (Conveners: Michael Sullivan, Yoshihiro Funakoshi)

10:30 (9) CEPC IR optics 30'

Speaker:	Mr. Yiwei Wang (IHEP)
Material:	Slides

11:00 (10) Status of the FCC-ee interaction region design 30'

Speaker:	Mr. Roman Martin (CERN)
Material:	Slides

11:30 (11) Crab waist interaction region 30'

Speaker:	Dr. Anton Bogomyagkov (BINP)
Material:	Slides

12:00 - 14:00 Lunch

13:30 - 15:30 Parallel Session 4: WG 3 – IR and MDI

Convener:

Michael Sullivan, Yoshihiro Funakoshi

13:30 (1) SuperKEKB background simulations (including issues for detector shielding) 45'

Speaker:	Hiroyuki Nakayama (KEK)
Material:	Slides

14:15 (2) Beam-beam limit vs. number of IPs and energy II: scaling law 45'

Speaker:	Ming Xiao (IHEP)
Material:	Slides

14:00 - 15:30 Parallel Session 4: WG 2 – Optics

Convener:

Kazuhito Ohmi, Yunhai Cai

14:00 (12) Beamstrahlung and energy acceptance 22'

Speaker:	Dr. Kazuhito Ohmi (KEK)
Material:	Slides

14:22 (13) Interaction region magnets 22'

Speaker:	Dr. Eugenio Paoloni (INFN)
Material:	Slides

14:44 (14) Beam-beam effects in the CEPC 22'

Speaker:	Mr. Yuan Zhang (IHEP)
Material:	Slides

15:06 (15) Wide-band long-focus optics for detection systems infrared synchrotron accelerator diagnostics 22'

Speaker:	Dr. Anatoly Maltsev (JINR)
Material:	Slides

15:30 - 16:00 Coffee (30’)

16:00 - 17:30 Parallel Session 5: WG 3 – IR and MDI

Convener:

Michael Sullivan, Yoshihiro Funakoshi

16:00 (3) Beam-beam limit vs. number of IPs and energy I: beam-beam simulation 45'

Speaker:	Dr. Kazuhito Ohmi (KEK)
Material:	Slides

16:45 (4) Long-range beam-beam interaction with the bunch train operation 45'

Speaker:	Mr. David Rice (Cornell U.)
Material:	Slides

16:00 - 17:30 Parallel Session 5: WG 4 – SR and Shielding

Convener:

John Seeman, Marica Biagini

16:00 (1) Monte-Carlo simulation of synchrotron radiation in the design of CEPC vacuum chamber 22'

Speaker:	Mr. Zhongjian Ma (IHEP)
Material:	Slides

16:22 (2) Vacuum system requirements for a HF e+e- accelerator 22'

Speaker:	Mr. Roberto Kersevan (CERN)
Material:	Slides

16:44 (3) Synchrotron radiation effects in the HF injector 22'

Speaker:	Dr. Yannis Papaphilippou (CERN)
Material:	Slides

17:06 (4) Shielding of Electronics in the Tunnel 22'

Speaker:	Luigi Salvatore Esposito (CERN)
Material:	Slides

Saturday, October 11, 2014

08:30 - 10:00 Jointed Session 6: Joint session of WG 3 and WG4 – IR, MDI and shielding

Convener:

Michael Sullivan, Yoshihiro Funakoshi

08:30 (5) Choice of L* I: SR and other issues (Joint with WG4) 30'

Speaker:	Michael Sullivan (SLAC)
Material:	Slides

09:00 (6) Choice of L* II: IR optics and dynamic aperture 30'

Speaker:	Dr. Eugene Levichev (BINP)
Material:	Slides

09:30 (7) Choice of L* III: requirement from detector 30'

Speaker:	Dr. Gang Li (IHEP)
Material:	Slides

08:30 - 10:00 Jointed Session 6: Joint session of WG3 and WG 4 – SR, MDI and Shielding

Convener:

John Seeman, Marica Biagini

09:14 (7) Synchrotron radiation absorption and vacuum issues in the IR 22'

Speaker:	Dr. John Seeman (SLAC)
Material:	Slides

09:36 (8) Infrared synchrotron methods and systems for monitoring and controlling particle beams in real time 22'

Speaker:	Ms. Marina Maltseva (TENZOR)
Material:	Slides

10:00 - 10:30 Coffee (30’)

10:30 - 12:00 Parallel Session 7: WG 3 – IR and MDI

Convener:

Michael Sullivan, Yoshihiro Funakoshi

10:30 (8) Lost particles in the IR and Touschek effects 45'

Speaker:	Dr. Manuela Boscolo (INFN)
Material:	Slides

11:15 (9) Detector beam background simulations for CEPC 45'

Speaker:	Dr. Hongbo Zhu (IHEP)
Material:	Slides

10:30 - 12:00 Parallel Session 7: WG 5 – Superconducting RF

Convener:

Yoshiyuki Morita, Sergey Belomestnykh

10:30 (1) General approach to FCC SRF system 22'

Speakers:	Dr. Frank Zimmermann (CERN), Erk Jensen (CERN)
Material:	Slides

10:52 (2) General approach to CEPC SRF system 22'

Speaker:	Dr. Jiyuan Zhai (IHEP)
Material:	Slides

11:14 (3) 704 MHz BNL3 cavity as an option for CEPC/FCC 20'

Speaker:	Wencai Xu (BNL)
Material:	Slides

11:34 (4) Discussion 22'

12:00 - 14:00 Lunch
12:00 - 14:00 International Organizing Committee (IOC) meeting

14:00 - 15:30 Parallel Session 8: WG 5 – Superconducting RF

Convener:

Yoshiyuki Morita, Sergey Belomestnykh

14:00 (5) High power coupler 22'

Speaker:	Eiji Kako (KEK)
Material:	Slides

14:22 (6) HOM damper hardware considerations for future energy frontier circular colliders 22'

Speaker:	Dr. Sergey Belomestnykh (BNL)
Material:	Slides

14:44 (7) Tuners, operating experience and performance recovery 22'

Speaker:	Prof. Yoshiyuki Morita (KEK)
Material:	Slides

15:06 (8) Discussion 22'

14:00 - 15:30 Parallel Session 8: WG 6 – Injectors and Injection

Convener:

David Rice, Yannis Papaphilippou

14:00 (1) CEPC injector 22'

Speaker:	Prof. Chuang Zhang (IHEP)
Material:	Slides

14:22 (2) FCC-ee injector 22'

Speaker:	Dr. Yannis Papaphilippou (CERN)
Material:	Slides

14:44 (3) Maintaining polarization in synchrotrons 22'

Speaker:	Ivan Koop (BINP)
Material:	Slides

15:06 (4) Discussion 22'

15:30 - 16:00 Coffee (30’)

16:00 - 17:30 Parallel Session 9: WG 6 – Injectors and Injection

Convener:

David Rice, Yannis Papaphilippou

16:00 (5) Topoff injection at PEP2 22'

Speaker:	Dr. John seeman (SLAC)
Material:	Slides

16:22 (6) Injection with Pretzels at CESR 22'

Speaker:	Mr. David Rice (Cornell U.)
Material:	Slides

16:44 (7) Lattice optimization for Top-Up injection 22'

Speaker:	Prof. Richard Talman (Cornell U.)
Material:	Slides

17:06 (8) Discussion 22'

16:00 - 17:30 Parallel Session 9: WG 7 – Orbit and Beam Stability

Convener:

John Byrd, Gang Xu

16:00 (1) Impedance and collective effects of CEPC 45'

Speaker:	Ms. Na Wang (IHEP)
Material:	Slides

16:45 (2) Discussion 45'

19:00 - 21:00 Banquet

Sunday, October 12, 2014

08:30 - 10:00 Parallel Session 10: WG 8 – Polarization

Convener:

Ivan Koop

08:30 (1) Transverse polarization for energy calibration at Z-peak 22'

Speaker:	Dr. Michael Koratzinos (U. Geneva)
Material:	Slides

08:52 (2) Longitudinal polarization and acceleration of polarized beams 22'

Speaker:	Ivan Koop (BINP)
Material:	Slides

09:14 (3) FCC-ee beam energy measurement suggestion 22'

Speaker:	Nickolai Muchnoi (BINP)
Material:	Slides

09:36 (4) Possible applications of wave-beam interaction for energy measurement and obtaining of polarization at FCC e+e- 22'

Speaker:	Dr. Sergei Nikitin (BINP)
Material:	Slides

08:30 - 10:20 Parallel Session 10: WG 9 – Instrumentation and Control

Convener:

Michiko Minty, Hermann Schmickler

08:30 (1) Lessons learned from the B-Factories and implications for a high-luminosity circular e+e- Higgs factory 30'

Speaker:	Prof. Yoshihiro Funakoshi (KEK)
Material:	Slides

09:00 (2) Instrumentation and control at large colliders 30'

Speaker:	Manfred Wendt (CERN)
Material:	Slides

09:50 (3) Beam instrumentation of CEPC 30'

Speaker:	Dr. Junhui Yue (IHEP)
Material:	Slides

10:00 - 10:30 Coffee (30’)

10:30 - 12:00 Summary Session 1 (Chair: Qing Qin)

10:30 Physics opportunities 45'

Speaker: Prof. Nima Arkani-Hamed (IAS)

11:15 WG 1 15'

Speakers:	Dr. Eugene Levichev (BINP), Dr. Frank Zimmermann (CERN)
Material:	Slides

12:00 - 14:00 Lunch

14:00 - 15:30 Summary Session 2 (Chair: Qing Qin)

14:00 WG 2 15'

Speakers:	Dr. Kazuhito Ohmi (KEK), Dr. Yunhai Cai (SLAC)
Material:	Slides

14:15 WG 3 15'

Speakers:	Michael Sullivan (SLAC), Prof. Yoshihiro Funakoshi (KEK)
Material:	Slides

14:30 WG 4 15'

Speakers:	Dr. John Seeman (SLAC), Dr. Maria Biagini (INFN)
Material:	Slides

14:45 WG 5 15'

Speakers:	Prof. Yoshiyuki Morita (KEK), Dr. Sergey Belomestnykh (BNL)
Material:	Slides

15:00 WG 6 15'

Speakers:	Mr. David Rice (U. Cornell), Dr. Yannis Papaphilippou (CERN)
Material:	Slides

15:15 WG 7 15'

Speakers:	Dr. John Byrd (LBL), Gang Xu (IHEP)
Material:	Slides

15:30 - 16:00 Coffee (30’)

16:00 - 16:45 Summary Session 3 (Chair: Frank Zimmermann)

16:00 WG 8 15'

Speaker:	Ivan Koop (BINP)
Material:	Slides

16:15 WG 9 15'

Speakers:	Dr. Michiko Minty (BNL), Dr. Hermann Schmickler (CERN)
Material:	Slides

16:30 WG 10 15'

Speaker:	Dr. Stephen Peggs (BNL)
Material:	Slides

16:45 - 16:50 Closing Remarks 5'

Speaker:	Dr. Weiren Chou (FNAL)
Material:	Slides