2020-08-02
06:17 |
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2020-08-02
06:17 |
QCD Highlights from CMS
/ Strologas, J (Ioannina U.)
/CMS Collaboration
We present recent and legacy Quantum Chromodynamics (QCD) physics results based on jet final states from the CMS experiment at the LHC. The accumulated data were acquired from proton+proton collisions at center-of-mass energies of 8 and 13 TeV and integrated luminosity up to 19 fb$^{-1}$ and 35.8 fb$^{-1}$ respectively. [...]
Elsevier, 2020 - 7 p.
- Published in : Nucl. Part. Phys. Proc. 309-311 (2020) 15-21
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2020-08-02
06:17 |
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2020-08-02
06:17 |
Quench protection of the BabyIAXO magnet
/ Bykovskiy, N (CERN) ; Dudarev, A (CERN) ; Silva, H (CERN) ; ten Kate, H H J (CERN)
BabyIAXO, a 20 m-long twin-bore helioscope aiming for search of axion like particles, is currently in the engineering design phase and its construction is to be completed within the next 4 years. In addition to X-ray detectors and focusing optics, the system is equipped with a 50 MJ magnet with a common coil layout, containing two 10 m-long NbTi flat racetrack coils cooled by a group of cryocoolers. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012127
Fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012127
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2020-08-02
06:17 |
Analysis of short-circuit transients in the LHC main dipole circuit
/ Liakopoulou, A (CERN ; Twente U., Enschede) ; Annema, A J (Twente U., Enschede) ; Bortot, L (CERN ; Darmstadt, Tech. U.) ; Charifoulline, Z (CERN) ; Maciejewski, M (CERN) ; Prioli, M (INFN, Milan) ; Ravaioli, E (CERN) ; Salm, C (Twente U., Enschede) ; Schmitz, J (Twente U., Enschede) ; Verweij, A P (CERN)
After the occurrence and detection of a short circuit to ground in the LHC main dipole circuit, a fast power abort is triggered and the current in the circuit starts decaying semi-exponentially from a maximum value of 11.85 kA to zero, with a time constant of 103 s. If a short to ground occurs, the current flows through the fuse that is present in the grounding subcircuit. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012077
Fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012077
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2020-08-02
06:17 |
Distribution Feedbox for the Superconducting Link (SCLink) and Magnets of HL-LHC
/ Bailey, W (Southampton U.) ; Pelegrin, J (Southampton U.) ; Falorio, I (Southampton U. ; CERN) ; Leclercq, Y (CERN) ; Betemps, R (CERN) ; Parma, V (CERN) ; Ballarino, A (CERN) ; Yang, Y (Southampton U.)
The High Luminosity LHC (HL-LHC) project aims at upgrading the LHC collider to increase its luminosity by about a factor of five. The electrical connection between the magnets in the LHC tunnel and the power converters in a new transverse tunnel will be supplied by a superconducting line (SCLink), consisting of ten MgB$_2$ cables housed into a 140 metre long flexible cryostat. [...]
IOP, 2020 - 9 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012076
Fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012076
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2020-08-02
06:17 |
Busbar technology development for the HL-LHC inner triplet magnets
/ Tsolakis, E (CERN) ; Favier, L (CERN) ; Principe, R (CERN) ; Prin, H (CERN) ; Meuter, F (CERN) ; Scheuerlein, C (CERN)
The busbars for the HL-LHC magnets are made of Nb-Ti/Cu conductor, the insulation system, and the auxiliary equipment to align the busbars with respect to the magnet coldmasses. This paper presents design options concerning the integration of the busbars inside the coldmass with a fixed point, and a reinforced insulation system for the flexible busbar part using thin PEEK tubes. [...]
IOP, 2020 - 9 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012075
Fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012075
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2020-08-02
06:17 |
Mechanical design of a nested 4-layer Canted Cosine Theta (CCT) dipole
/ Ortwein, Rafal (Cracow, INP) ; Blocki, Jacek (Cracow, INP) ; Kirby, Glyn (CERN) ; van Nugteren, Jeroen (CERN)
Nested CCT dipoles could be used in particle accelerators and proton therapy machines to bend a beam of charged particles in any direction. In the present study, a mechanical design of a 4 layer nested CCT dipole is evaluated with Finite Element Method (FEM). [...]
IOP, 2020 - 12 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012073
Fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012073
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2020-07-31
10:26 |
Experimental measurements on MLI performance from 20-60 K to 4.2 K
/ Venturi, V (Wroclaw Tech. U. ; CERN) ; Koettig, T (CERN) ; Chorowski, M (Wroclaw Tech. U.) ; Polinski, J (Wroclaw Tech. U.) ; Parma, V (CERN)
Future accelerators like the Future Circular Collider (FCC) under study at CERN, will be considerably larger than the Large Hadron Collider (LHC) presently in operation, with consequent increasing demands for cryogenically efficient cryostat solutions. MLI insulating systems remain the technology of choice for large accelerators due to the compromise they offer between thermal performance and cost-effectiveness. [...]
IOP, 2020 - 7 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 755 (2020) 012154
External link: Published Fulltext
In : Conference on Cryogenic Engineering and on International Cryogenic Materials, Hartford, Connecticut, 21 - 25 Jul 2019, pp.012154
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2020-07-31
10:26 |
Design, Procurement, Installation and Commissioning of the Cryogenic Infrastructure for a New Superconducting RF Test Facility with Beam at CERN
/ Delprat, L (CERN) ; Brodzinski, K (CERN) ; Claudet, S (CERN) ; Derking, H (CERN)
The High-Luminosity LHC project (HL–LHC), aiming at peak luminosity above 5.0 × 10$^{34}$ cm$^{-2}$ s$^{-1}$, considers replacing the matching sections on both sides of the ATLAS and CMS experiments. To complement new focusing quadrupoles, this upgrade considers using the so-called superconducting crab cavities, never operated before with protons and therefore requiring qualification with beam. [...]
IOP, 2020 - 8 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 755 (2020) 012145
External link: Published Fulltext
In : Conference on Cryogenic Engineering and on International Cryogenic Materials, Hartford, Connecticut, 21 - 25 Jul 2019, pp.012145
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