eeFACT2016 - List of Keywords (operation)

Paper	Title	Other Keywords	Page
MOOTH3	Overview on Low Energy Collider	ion, luminosity, collider, factory	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, luminosity, emittance	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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TUT2H4	Top-up Injection Schemes for HEPS	ion, injection, cavity, kicker	85
	Z. Duan, J. Chen, Y. Jiao, Y.M. Peng, Q.Y. Wang, G. Xu, P. Zhang IHEP, Beijing, People's Republic of China
	Funding: Natural Science Foundation of China (No.11605212) Top-up injection has become standard mode of operation for most third generation light sources, and has also been suc- cesfully applied in electron-positron circular colliders like KEKB and PEP-II. For next generation ultra-low emittance storage rings approaching the diffraction limit of X-rays, take the High Energy Photon Source (HEPS) for example, top-up injection is a basic requirement but non-trivial to im- plement. The very small dynamic aperture is insufficient for traditional off-axis injection scheme, instead, a novel on-axis injection scheme was recently proposed for HEPS, based on RF gymnastics of a double-frequency RF system. This paper will describe the physical mechanism of this scheme, related RF issues, and the implications for top-up injection.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT2H4
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TUT3AH6	Electron Cloud at SuperKEKB	ion, electron, permanent-magnet, solenoid	125
	H. Fukuma, K. Ohmi, Y. Suetsugu, M. Tobiyama KEK, Ibaraki, Japan
	Several countermeasures such as ante-chambers, TiN coating, clearing electrodes, grooved structure and so on, have been taken to mitigate the electron cloud effects in the SuperKEKB positron ring. During phase 1 operation of SuperKEKB, which continued from this February to June, the electron cloud effects such as beam size blow-up, non-linear pressure increase, betatron tune shift along a bunch train and transverse coupled bunch instability were observed. Permanent magnets attached at bellows that generate longitudinal magnetic field in vacuum chambers were effective to reduce the electron cloud. This talk will cover following subjects about the electron cloud at SuperKEKB, 1) mitigation methods against the electron cloud, 2) observation of the electron cloud effects in phase 1 operation and 3) plan of further reduction of the electron cloud toward phase 2 operation which will start in the late FY2017.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT3AH6
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TUT3BH3	Luminosity Tuning at KEKB	ion, luminosity, injection, 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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WET1H3	Beam Instrumentation in SuperKEKB	ion, feedback, detector, kicker	164
	H. Fukuma KEK, Ibaraki, Japan
	SuperKEKB is an upgraded collider of the KEK B-factory (KEKB). Its phase 1 operation has just finished in this June. A BPM system consists of super heterodyne detectors, turn by turn log-ratio detectors with fast gates and detectors for the orbit feedback to maintain stable collision. New X-ray beam profile monitors with multi-slit masks are installed. The bunch-by-bunch feedback system is upgraded using low noise frontend electronics and new 12 bits iGp digital filters. A status of instrumentations of SuperKEKB will be given in this talk.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-WET1H3
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Paper

Title

Other Keywords

Page

MOOTH3

Overview on Low Energy Collider

ion, luminosity, collider, factory

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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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOT3AH2

Higgs Factory Concepts

ion, collider, luminosity, emittance

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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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUT2H4

Top-up Injection Schemes for HEPS

ion, injection, cavity, kicker

85

Z. Duan, J. Chen, Y. Jiao, Y.M. Peng, Q.Y. Wang, G. Xu, P. Zhang
IHEP, Beijing, People's Republic of China

Funding: Natural Science Foundation of China (No.11605212)
Top-up injection has become standard mode of operation for most third generation light sources, and has also been suc- cesfully applied in electron-positron circular colliders like KEKB and PEP-II. For next generation ultra-low emittance storage rings approaching the diffraction limit of X-rays, take the High Energy Photon Source (HEPS) for example, top-up injection is a basic requirement but non-trivial to im- plement. The very small dynamic aperture is insufficient for traditional off-axis injection scheme, instead, a novel on-axis injection scheme was recently proposed for HEPS, based on RF gymnastics of a double-frequency RF system. This paper will describe the physical mechanism of this scheme, related RF issues, and the implications for top-up injection.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT2H4

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUT3AH6

Electron Cloud at SuperKEKB

ion, electron, permanent-magnet, solenoid

125

H. Fukuma, K. Ohmi, Y. Suetsugu, M. Tobiyama
KEK, Ibaraki, Japan

Several countermeasures such as ante-chambers, TiN coating, clearing electrodes, grooved structure and so on, have been taken to mitigate the electron cloud effects in the SuperKEKB positron ring. During phase 1 operation of SuperKEKB, which continued from this February to June, the electron cloud effects such as beam size blow-up, non-linear pressure increase, betatron tune shift along a bunch train and transverse coupled bunch instability were observed. Permanent magnets attached at bellows that generate longitudinal magnetic field in vacuum chambers were effective to reduce the electron cloud. This talk will cover following subjects about the electron cloud at SuperKEKB, 1) mitigation methods against the electron cloud, 2) observation of the electron cloud effects in phase 1 operation and 3) plan of further reduction of the electron cloud toward phase 2 operation which will start in the late FY2017.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT3AH6

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUT3BH3

Luminosity Tuning at KEKB

ion, luminosity, injection, 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

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WET1H3

Beam Instrumentation in SuperKEKB

ion, feedback, detector, kicker

164

H. Fukuma
KEK, Ibaraki, Japan

SuperKEKB is an upgraded collider of the KEK B-factory (KEKB). Its phase 1 operation has just finished in this June. A BPM system consists of super heterodyne detectors, turn by turn log-ratio detectors with fast gates and detectors for the orbit feedback to maintain stable collision. New X-ray beam profile monitors with multi-slit masks are installed. The bunch-by-bunch feedback system is upgraded using low noise frontend electronics and new 12 bits iGp digital filters. A status of instrumentations of SuperKEKB will be given in this talk.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-WET1H3

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)