CERN Accelerating science

Future Circular Collider Documents

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2017-01-09
09:36
Availability modeling approach for future circular colliders based on the LHC operation experience / Niemi, Arto (Tampere University of Technology (FI)) ; Apollonio, Andrea (CERN) ; Gutleber, Johannes (CERN) ; Sollander, Peter (CERN) ; Penttinen, Jussi-Pekka ; Virtanen, Seppo Johannes
Reaching the challenging integrated luminosity production goals of a future circular hadron collider (FCC-hh) and high luminosity LHC (HL-LHC) requires a thorough understanding of today’s most powerful high energy physics research infrastructure, the LHC accelerator complex at CERN. FCC-hh, a 4 times larger collider ring aims at delivering 10–20 ab−1 of integrated luminosity at 7 times higher collision energy. [...]
CERN-ACC-2017-0002.- Geneva : CERN, 2016 - Published in : : 19 (2016) , no. 12, pp. 121003-1 - 121003-16 Fulltext: PDF;

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2016-12-15
17:03
FCC-hh turn-around cycle / Alemany Fernandez, Reyes (CERN) ; Apollonio, Andrea (CERN) ; Bartmann, Wolfgang (CERN) ; Buffat, Xavier (CERN) ; Niemi, Arto (Tampere University of Technology (FI)) ; Schulte, Daniel (CERN) ; Solfaroli Camillocci, Matteo (CERN) ; Stoel, Linda (Vienna University of Technology (AT))
The turn-around cycle time of a collider is defined as the time spent between the end of stable beams and the start of the next stable beams period, and its calculation is of fundamental importance. On one side it is a crucial ingredient for the computation of the optimal time spent in luminosity production, which defines the integrated luminosity per fill or store. [...]
CERN-ACC-2016-0341.- Geneva : CERN, 2016 Fulltext: PDF;

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2016-12-15
15:48
Evaluation of critical current density and residual resistance ratio limits in powder in tube Nb3Sn conductors / Segal, Christopher (Applied Superconductivity Center) ; Tarantini, Chiara (Applied Superconductivity Center) ; Sung, Zu Hawn (Applied Superconductivity Center) ; Lee, Peter J (Applied Superconductivity Center) ; Sailer, Bernd (Bruker EAS GmbH) ; Thoener, Manfred (Bruker EAS GmbH) ; Schlenga, Klaud (Bruker EAS GmbH) ; Ballarino, Amalia (CERN) ; Bottura, Luca (CERN) ; Bordini, Bernardo (CERN) et al.
High critical current density ( Jc) Nb3Sn A15 multifilamentary wires require a large volume fraction of small grain (SG), superconducting A15 phase, as well as Cu stabilizer with high Residual Resistance Ratio (RRR) to provide electromagnetic stabilization and protection. In powder-in-tube (PIT) wires the unreacted Nb7.5 wt%Ta outer layer of the tubular filaments acts as a diffusion barrier and protects the interfilamentary Cu stabilizer from Sn contamination. [...]
CERN-ACC-2016-0340.- Geneva : CERN, 2016 - Published in : : 29 (2016) , no. 8 Fulltext: PDF;

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2016-12-09
11:30
Iron-free detector magnet options for the future circular collider / Mentink, Matthias (CERN) ; Dudarev, Alexey (CERN) ; Pais Da Silva, Helder Filipe (CERN) ; Rolando, Gabriella (CERN) ; Cure, Benoit (CERN) ; Gaddi, Andrea (CERN) ; Klyukhin, Slava (Lomonosov Moscow State U.) ; Gerwig, Hubert (CERN) ; Wagner, Udo (CERN) ; Ten Kate, Herman (CERN)
In this paper, several iron-free solenoid-based designs of a detector magnet for the future circular collider for hadron-hadron collisions (FCC-hh) are presented. The detector magnet designs for FCC-hh aim to provide bending power for particles over a wide pseudorapidity range (0 ≤ jηj ≤ 4). [...]
CERN-ACC-2016-0335.- Geneva : CERN, 2016 - 10 p. - Published in : Phys. Rev. Accel. Beams 19 (2016) 111001 APS Open Access article: PDF;
In : 2nd Annual Meeting of the Future Circular Collider study 2016, Rome, Italy, 11 - 15 Apr 2016

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2016-12-07
09:48
Higgs Factory Concepts / Zimmermann, Frank (CERN)
Designs for future high-energy circular electron-positron colliders are based on both established and novel concepts. An appropriate design will enable 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..
CERN-ACC-2016-0333.- Geneva : CERN, 2016 Fulltext: PDF;
In : 58th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e-Colliders , Daresbury, United Kingdom, 24 - 27 Oct 2016

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2016-12-07
09:30
Summary of impedance issues and beam instabilities / Zimmermann, Frank (CERN)
This paper summarizes the session on impedance issues and beam instabilities at the ICFA workshop on future circular electron-positron factories “eeFACT2016” [1] held at the Cockcroft Institute, Daresbury, from 24 to 27 October 2016. This session also covered active beam stabilization by feedback systems. [...]
CERN-ACC-2016-0332.- Geneva : CERN, 2016 Fulltext: PDF;
In : 58th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e-Colliders , Daresbury, United Kingdom, 24 - 27 Oct 2016

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2016-12-06
14:13
Status of the Future Circular Collider Study / Benedikt, Michael (CERN) ; Zimmermann, Frank (CERN)
Following the 2013 update of the European Strategy for Particle Physics, the international Future Circular Collider (FCC) Study has been launched by CERN as host institute. Its main purpose and long-term goal is to design an energyfrontier hadron collider (FCC-hh) with a centre-of-mass energy of about 100 TeV in a new 80–100 km tunnel. [...]
CERN-ACC-2016-0331.- Geneva : CERN, 2016 Fulltext: PDF;
In : 25th Russian Particle Accelerator Conference, Saint Petersburg, Russia, 21 - 25 Nov 2016

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2016-12-05
15:21
Investigation of beam self-polarization in the future e+e− circular collider / Gianfelice-Wendt, Eliana (Fermilab)
The use of resonant depolarization has been suggested for precise beam energy measurements (better than 100 keV) in the eþe− Future Circular Collider (FCC-eþe−) for Z and WW physics at 45 and 80 GeV beam energy respectively. Longitudinal beam polarization would benefit the Z peak physics program; however it is not essential and therefore it will be not investigated here. [...]
CERN-ACC-2016-0330.- Geneva : CERN, 2016 - 9 p. - Published in : Phys. Rev. Accel. Beams 19 (2016) 101005 APS Open Access article: PDF;
In : 2nd Annual Meeting of the Future Circular Collider study 2016, Rome, Italy, 11 - 15 Apr 2016

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2016-12-05
12:04
Efficient twin aperture magnets for the future circular $e^+/e^- $ collider / Milanese, Attilio (CERN)
We report preliminary designs for the arc dipoles and quadrupoles of the FCC-ee double-ring collider. After recalling cross sections and parameters of warm magnets used in previous large accelerators, we focus on twin aperture layouts, with a magnetic coupling between the gaps, which minimizes construction cost and reduces the electrical power required for operation. [...]
CERN-ACC-2016-0329.- Geneva : CERN, 2016 - 8 p. - Published in : Phys. Rev. Accel. Beams 19 (2016) 112401 APS Open Access article: PDF;
In : 2nd Annual Meeting of the Future Circular Collider study 2016, Rome, Italy, 11 - 15 Apr 2016

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2016-10-26
08:37
Design of beam optics for the Future Circular Collider e+e- -collider rings / Oide, K. (KEK, Tsukuba) ; Aiba, M. (PSI, Villigen) ; Aumon, S. (CERN) ; Benedikt, M. (CERN) ; Blondel, A. (Geneva U.) ; Bogomyagkov, A. (Novosibirsk, IYF) ; Boscolo, M. (LNF, Dafne Light) ; Burkhardt, H. (CERN) ; Cai, Y. (SLAC) ; Doblhammer, A. (CERN) et al.
A beam optics scheme has been designed for the Future Circular Collider-e+e- (FCC-ee). The main characteristics of the design are: beam energy 45 to 175 GeV, 100 km circumference with two interaction points (IPs) per ring, horizontal crossing angle of 30 mrad at the IP and the crab-waist scheme [1] with local chromaticity correction. [...]
arXiv:1610.07170; CERN-ATS-2016-007.- 2016 - 23 p. - Published in : Phys. Rev. Accel. Beams 19 (2016) 111005 APS Open Access article: PD; Fulltext: PDF; External link: Preprint
In : 2nd Annual Meeting of the Future Circular Collider study 2016, Rome, Italy, 11 - 15 Apr 2016, pp.111005

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Focus on:
Future Circular Collider draft documents (35) [restricted]