eeFACT2018 - List of Keywords (cryomodule)

Paper	Title	Other Keywords	Page
WEPAB03	FCC-ee Operation Model, Availability & Performance	luminosity, operation, collider, injection	269
	F. Zimmermann, A. Apollonio, M. Benedikt, O. Brunner, S. Myers, J. Wenninger CERN, Meyrin, Switzerland Y. Funakoshi, K. Oide KEK, Ibaraki, Japan C. Milardi INFN/LNF, Frascati, Italy A. Niemi Tampere University of Technology, Tampere, Finland Q. Qin IHEP, Beijing, People’s Republic of China J.T. Seeman SLAC, Menlo Park, California, USA
	Funding: This work was supported by the European Commission under the HORIZON 2020 project ARIES no.~730871. This document discusses the machine parameters and expected luminosity performance for the proposed future circular lepton collider FCC-ee. Particular emphasis is put on availability, physics run time, and efficiency. Key performance assumptions are compared with the operational experience of several past and present colliders including their injectors - LHC, LEP/LEP-2, PEP-II, KEKB, BEPCII, DAΦNE, SLC and the SPS complex.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEPAB03
About •	paper received ※ 13 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPAB05	Conceptional design of CEPC Cryogenic system	cryogenics, collider, cavity, booster	282
	J.Q. Zhang, R. Han, S.P. Li IHEP, Beijing, People’s Republic of China
	The CEPC has two rings, the booster ring and the collider ring. There are 432 superconducting cavities in total. In the booster ring, there are 96 ILC type 1.3 GHz 9-cell superconducting cavities; eight of them will be packaged in one 12-m-long module. There are 12 such modules. In the collider ring, there are 240 650 MHz 2-cell cavities; six of them will be packaged in one 11-m-long module. There are 40 of them. All the cavities will be cooled in a liquid-helium bath at a temperature of 2K to achieve a good cavity quality factor. The cooling benefits from helium II thermo-physical properties of large effective thermal conductivity and heat capacity as well as low viscosity and is a technically safe and economically reasonable choice. The 2K cryostat will be protected against heat radiation by means of two thermal shields cooling with 5-8K helium as well as 40-80K helium from a refrigerator. There are 4 cryo-stations along the 100km circular collider with the physical design of double ring. Generally, each cryo-station is supplied from a common cryogenic plant, with one refrigerator and one distribution box. The cooling capacity of each refrigerator is 18kW @ 4.5K.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEPAB05
About •	paper received ※ 10 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WEPAB03

FCC-ee Operation Model, Availability & Performance

luminosity, operation, collider, injection

269

F. Zimmermann, A. Apollonio, M. Benedikt, O. Brunner, S. Myers, J. Wenninger
CERN, Meyrin, Switzerland
Y. Funakoshi, K. Oide
KEK, Ibaraki, Japan
C. Milardi
INFN/LNF, Frascati, Italy
A. Niemi
Tampere University of Technology, Tampere, Finland
Q. Qin
IHEP, Beijing, People’s Republic of China
J.T. Seeman
SLAC, Menlo Park, California, USA

Funding: This work was supported by the European Commission under the HORIZON 2020 project ARIES no.~730871.
This document discusses the machine parameters and expected luminosity performance for the proposed future circular lepton collider FCC-ee. Particular emphasis is put on availability, physics run time, and efficiency. Key performance assumptions are compared with the operational experience of several past and present colliders including their injectors - LHC, LEP/LEP-2, PEP-II, KEKB, BEPCII, DAΦNE, SLC and the SPS complex.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEPAB03

About •

paper received ※ 13 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019

Export •

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

WEPAB05

Conceptional design of CEPC Cryogenic system

cryogenics, collider, cavity, booster

282

J.Q. Zhang, R. Han, S.P. Li
IHEP, Beijing, People’s Republic of China

The CEPC has two rings, the booster ring and the collider ring. There are 432 superconducting cavities in total. In the booster ring, there are 96 ILC type 1.3 GHz 9-cell superconducting cavities; eight of them will be packaged in one 12-m-long module. There are 12 such modules. In the collider ring, there are 240 650 MHz 2-cell cavities; six of them will be packaged in one 11-m-long module. There are 40 of them. All the cavities will be cooled in a liquid-helium bath at a temperature of 2K to achieve a good cavity quality factor. The cooling benefits from helium II thermo-physical properties of large effective thermal conductivity and heat capacity as well as low viscosity and is a technically safe and economically reasonable choice. The 2K cryostat will be protected against heat radiation by means of two thermal shields cooling with 5-8K helium as well as 40-80K helium from a refrigerator. There are 4 cryo-stations along the 100km circular collider with the physical design of double ring. Generally, each cryo-station is supplied from a common cryogenic plant, with one refrigerator and one distribution box. The cooling capacity of each refrigerator is 18kW @ 4.5K.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEPAB05

About •

paper received ※ 10 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019

Export •

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