Keyword: luminosity
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MOOTH3 Overview on Low Energy Collider ion, collider, factory, operation 9
 
  • Q. Qin
    IHEP, Bejing, People's Republic of China
 
  Electron positron colliders cover from low energy machine like Phi factory to very high energy one, Higgs factory, which is still in the way on developing. In this talk, several low energy colliders, DAΦNE as a Phi factory, BEPCII and VEPP-4M as tau-charm factories, and the proposed super charm-tau factories, will be reviewed. The performance and future plans are discussed.
Work supported by the IHEP innovation funds, 2014
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-MOOTH3  
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MOT3AH2 Higgs Factory Concepts ion, collider, emittance, operation 25
 
  • F. Zimmermann
    CERN, Geneva, Switzerland
 
  Funding: This work was supported in part by the European Commission under the FP7 Capacities project EuCARD-2, grant agreement 312453.
Designs for future high-energy circular electron-positron colliders are based on both established and novel concepts. An appropriate design will allow these facilities to serve not only as ‘‘Higgs factories'', but also as Z, W and top factories, and, in addition, to become a possible first step to a higher-energy hadron collider.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-MOT3AH2  
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MOT3AH3 Implementation of Round Colliding Beams Concept at VEPP-2000 ion, collider, positron, detector 32
 
  • D.B. Shwartz, D.E. Berkaev, I. Koop, E. Perevedentsev, Yu. A. Rogovsky, P.Yu. Shatunov, Y.M. Shatunov
    BINP SB RAS, Novosibirsk, Russia
  • E. Perevedentsev, Yu. A. Rogovsky, Y.M. Shatunov
    NSU, Novosibirsk, Russia
 
  VEPP-2000 e+e collider at Budker Institute of Nuclear Physics was commissioned in 2009 and collected data during three runs in whole designed energy range of 160-1000 MeV per beam. The Round Colliding Beams concept was implemented at VEPP-2000 to get a significant enhancement in beam-beam limit. The beam-beam parameter value as high as 0.12 per IP was achieved at intermediate energy. To obtain more intensive beams and achieve target luminosity at top energies the injection chain upgrade was done during 2013-2016. Presently VEPP-2000 is recommissioned and ready to start data taking.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-MOT3AH3  
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TUT1BH2 Study of Coherent Head-tail Instablility Due to Beam-beam Interaction in Cirular Colliders Based on Crab Waist Scheme ion, simulation, damping, emittance 61
 
  • K. Ohmi
    KEK, Ibaraki, Japan
 
  FCC-ee is being studied various collision schemes, head-on and large Piwinski angle/ crab waist schemes. We discuss beam-beam limit in the collision schemes using weak-strong and strong-strong models.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT1BH2  
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TUT2H1 Top-up Injection for a Future Electro-positron Collider ion, injection, background, detector 66
 
  • J.T. Seeman
    SLAC, Menlo Park, California, USA
 
  Funding: Work Supported under US DOE/SU Contract DE-AC02-76SF00515.
The schemes for full-energy top-up injection into an e+e collider will be discussed emphasizing technical issues to be accommodated. The issues include energy stability, energy spread control, transverse emittance reduction, transverse position and angle stability, collimation, background control in the detector, detector blanking of event triggers, and bunch filling strategies. Strategies and observations from PEP-II and KEKB will be included.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT2H1  
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TUT3BH3 Luminosity Tuning at KEKB ion, injection, operation, coupling 147
 
  • Y. Funakoshi
    KEK, Ibaraki, Japan
 
  KEKB achieved the world's highest luminosity. One of the key issues for the high luminosity at KEKB was a luminosity tuning which was done almost every time even during the physics run to suppress the beam-beam blowup. In this talk, those experiences are summarized. Some experiences of the luminosity tuning at TRISTAN will also mentioned.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT3BH3  
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WET1H1 Beam Instrumentation Needs for a Future Electron-Positron Collider Based on PEP-II Observations ion, vacuum, feedback, instrumentation 157
 
  • J.T. Seeman
    SLAC, Menlo Park, California, USA
 
  Funding: Work supported by US DOE/SU Contract DE-AC02-76SF00515.
Future e+e colliders will operate with many bunches, short bunch lengths, small emittances, high currents, and small interaction point betas. The stability of the colliding beams with these characteristics will depend on detailed, high precision, and continuous measurements. The various beam measurement requirements and techniques will be discussed using PEP-II observations as a starting point.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-WET1H1  
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THS1H1 Summary of Design Concepts ion, collider, factory, hadron 195
 
  • F. Zimmermann, R.W. Aßmann
    CERN, Geneva, Switzerland
  • A.P. Blondel
    DPNC, Genève, Switzerland
 
  This paper summarizes the session on design concepts at the ICFA workshop on future circular electron-positron factories "eeFACT2016".  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-THS1H1  
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THS2H2 Summary of Machine Tuning Session ion, optics, emittance, coupling 216
 
  • M.E. Biagini
    INFN/LNF, Frascati (Roma), Italy
 
  This paper summarizes the work presented at the Machine Tuning session on the low emittance tuning for low emittance lattices and luminosity tuning at colliders.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-THS2H2  
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