2020-08-08
06:10 |
IFJ PAN’s contribution to the HL-LHC: DQW crab cavity preparation and testing at CERN
/ Zwoźniak, A (Cracow, INP ; CERN) ; Bocian, D (Cracow, INP) ; Krawczyk, A (Cracow, INP ; CERN) ; Prochal, B (Cracow, INP ; CERN) ; Wartak, M (Cracow, INP ; CERN)
The Double Quarter Wave (DQW) Crab Cavity was designed to rotate the colliding bunches and in consequence to increase the luminosity of the LHC machine. Prior to launching series production detailed RF validation tests, both without and with beam, were performed at CERN. [...]
SPIE, 2019 - 6 p.
- Published in : Proc. SPIE 11054 (2019) 110540D
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2020-08-08
06:10 |
IFJ PAN’s contribution to the HL-LHC: crab cavities and RF
/ Krawczyk, A (Cracow, INP ; CERN) ; Bocian, D (Cracow, INP) ; Prochal, B (Cracow, INP ; CERN) ; Wartak, M (Cracow, INP ; CERN) ; Zwoźniak, A (Cracow, INP ; CERN)
The High Luminosity LHC (HL-LHC) Project is an upgrade program of the Large Hadron Collider (LHC) at CERN, focused on increasing the luminosity, thus significantly enhancing the potential to discover new physics from rare events. Among many activities ongoing in this framework, the implementation of novel superconducting radio frequency (SRF) cavities - especially Crab Cavities - is foreseen for compensation of the bunch crossing angle, which is a reducing factor for LHC luminosity. [...]
SPIE, 2019 - 8 p.
- Published in : Proc. SPIE 11054 (2019) 110540C
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2020-08-08
06:10 |
IFJ PAN's contribution to the HL-LHC: construction of the superconducting links
/ Prochal, B (Cracow, INP ; CERN) ; Bocian, D (Cracow, INP) ; Krawczyk, A (Cracow, INP ; CERN) ; Zwoźniak, A (Cracow, INP ; CERN)
New superconducting transfer lines known as Superconducting Links (SC Links) are being developed at CERN for the remote powering of upgraded superconducting insertion magnets in the framework of the High Luminosity Large Hadron Collider (HL-LHC) project. The purpose of the SC Links is to transfer current from power converters located in radiation-free areas to magnets located in the vicinity of the LHC interaction points via shorter REBCO High Temperature Superconductor (HTS) current leads. [...]
SPIE, 2019 - 8 p.
- Published in : Proc. SPIE 11054 (2019) 110540B
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2020-08-06
07:56 |
Development of next generation muon beams at the Paul Scherrer Institute
/ Iwai, Ryoto (Zurich, ETH) ; Antognini, Aldo (CERN ; Zurich, ETH) ; Ayres, Nicholas ; Bao, Yu ; Belosevic, Ivana ; Bondar, Vira ; Eggenberger, Andreas ; Hildebrandt, Malte ; Kaplan, Daniel M ; Kettle, Peter R et al.
The Paul Scherrer Institute (PSI) provides the world's highest intensity muon beam of $\mathcal{O}(10^{8})\,\mu^{+}/$s at 28$\,$MeV/c. The HiMB project aims to improve this rate by two orders of magnitude. [...]
SISSA, 2020 - 5 p.
- Published in : PoS NuFact2019 (2020) 125
Fulltext: PDF;
In : The 21st International Workshop on Neutrinos from Accelerators, Daegu, Republic Of Korea, 26 - 31 Aug 2019, pp.125
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2020-08-04
11:38 |
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2020-08-04
06:57 |
Cryogenic Upgrade of the Helium Central Liquefier and Superconducting Cable & Wire Test Facilities at CERN
/ Pirotte, O (CERN) ; Lees, A (CERN) ; Barbe, T (CERN) ; Dupont, T (CERN) ; Pezzetti, M (CERN)
The demand for liquid helium (LHe) for users at CERN without dedicated cryogenic infrastructure is set to increase due to future projects and experiments in the Antiproton Decelerator. LHe is supplied to the users by means of 500 liter dewars filled by the central liquefier (B165) that comprises a cryogenic plant of 400 W @ 4.5 K. [...]
IOP, 2020 - 8 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 755 (2020) 012146
External link: Published fulltext
In : Conference on Cryogenic Engineering and on International Cryogenic Materials, Hartford, Connecticut, 21 - 25 Jul 2019, pp.012146
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2020-08-04
06:57 |
Design of the consolidated LHC dipole diode busbar insulation system
/ Meuter, F (CERN) ; Sahner, T (CERN) ; Scheuerlein, C (CERN) ; Tock, J Ph (CERN)
During the second long shutdown of the LHC in 2019 and 2020, the electrical insulation of the 1232 dipole diodes and diode busbars is presently consolidated. The newly designed insulation system, mainly consisting of polyimide laminated fiber reinforced epoxy sheets and injection molded pure resin inserts, can be installed in the very constricted space of the LHC tunnel, without removing the presently installed insulation. [...]
IOP, 2020 - 7 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012072
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012072
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2020-08-04
06:57 |
Assembly and Test of the HL-LHC Twin Aperture Orbit Corrector Based on Canted Cos-Theta Design
/ Kirby, G (CERN) ; Van Nugteren, J (CERN) ; Mentink, M (CERN) ; Canale, M (CERN) ; Gentini, L (CERN) ; Mazet, J (CERN) ; Pincot, F O (CERN) ; Mangiarotti, F J (CERN) ; Fiscarelli, L (CERN) ; Steckert, J (CERN) et al.
In the frame of the high-luminosity upgrade project (HL-LHC) at CERN, a double aperture, independently powered, family of beam orbit corrector magnets will be installed close to the two main LHC experiments Atlas and CMS. These 2.6 T magnets, built using a canted cos-theta design. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012070
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012070
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2020-08-04
06:57 |
Evidence of Kramer extrapolation inaccuracy for predicting high field Nb$_3$Sn properties
/ Segal, Christopher (Florida State U. ; CERN) ; Barth, Christian (CERN) ; Falorio, Iole (CERN) ; Carlón Zurita, Alejandro (CERN) ; Ballarino, Amalia (CERN) ; Chaud, Xavier (LNCMI, Grenoble) ; Tarantini, Chiara (Florida State U.) ; Lee, Peter J (Florida State U.) ; Larbalestier, David C (Florida State U.)
Future applications requiring high magnetic fields, such as the proposed Future Circular Collider, demand a substantially higher critical current density, $J_c$, at fields ≥16 T than is presently available in any commercial strand, so there is a strong effort to develop new routes to higher $J_c$ Nb$_3$Sn. As a consequence, evaluating the irreversibility field ($H_{irr}$) of any new conductor to ensure reliable performance at these higher magnetic fields becomes essential. [...]
IOP, 2020 - 9 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012062
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012062
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2020-08-04
06:57 |
Impact of 440 GeV Proton beams on Superconductors in a Cryogenic Environment
/ Will, A (CERN ; KIT, Karlsruhe, IPE) ; Bernhard, A (KIT, Karlsruhe, IPE) ; Bonura, M (Geneva U.) ; Bordini, B (CERN) ; Mentink, M (CERN) ; Mueller, A S (KIT, Karlsruhe, IPE) ; Oslandsbotn, A (CERN) ; Schmidt, R (CERN) ; Schubert, J (CERN) ; Senatore, C (CERN ; Geneva U.) et al.
The superconducting magnets used in high energy particle accelerators such as CERN’s LHC can be impacted by the circulating beam in case of specific failures. This leads to interaction of the beam particles with the magnet components, like the superconducting coils, through direct beam impact or via secondary particle showers. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys. : Conf. Ser. 1559 (2020) 012060
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012060
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