CERN Accelerating science

CERN Document Server 23 ჩანაწერია ნაპოვნი  1 - 10შემდეგიდასასრული  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 1.13 წამი. 
1.
HL-LHC IT STRING: Status and Perspectives / Bajko, M (CERN) ; Baglin, V (CERN) ; Ballarino, A (CERN) ; Bednarek, M J (CERN) ; Bertolasi, S (CERN) ; Bertone, C (CERN) ; Blanchard, S (CERN) ; Bozzini, D (CERN) ; Coulot, E (CERN) ; Coupat, C (CERN) et al.
The HL-LHC IT STRING, an integrated test stand for the major components of the HL-LHC Inner Triplet (IT) zone, is in its construction phase in a surface building at CERN. The main motivation is to study and validate the collective behavior of the different systems: magnets, circuit protection, cryogenics for magnets and superconducting link, magnet powering, vacuum, alignment, and interconnections between magnets and superconducting link. [...]
2024 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 9001306 Fulltext: PDF;
2.
Summary of the Post-Long Shutdown 2 LHC Hardware Commissioning Campaign / Apollonio, Andrea (CERN) ; Andreassen, Odd (CERN) ; Antoine, Alain (CERN) ; Argyropoulos, Theodoros (CERN) ; Bastos, Miguel (CERN) ; Bednarek, Mateusz (CERN) ; Bordini, Bernardo (CERN) ; Brodzinski, Krzysztof (CERN) ; Calia, Andrea (CERN) ; Charifoulline, Zinour (CERN) et al.
In this contribution we provide a summary of the LHC hardware commissioning campaign following the second CERN Long Shutdown (LS2), initially targeting the nominal LHC energy of 7 TeV. A summary of the test procedures and tools used for testing the LHC superconducting circuits is given, together with statistics on the successful test execution. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 335-338 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.335-338
3.
Systems performance: Circuits / Antoine, A (CERN) ; Bednarek, M (CERN) ; Charifoulline, Z (CERN) ; Coelingh, G J (CERN) ; D'angelo, G (CERN) ; Denz, R (CERN) ; Montabonnet, V (CERN) ; Nielsen, J (CERN) ; Nisbet, D (CERN) ; Panev, B (CERN) et al.
The performance of the LHC magnet circuits for the proton physics run in 2017 is evaluated. This contribution focuses on the availability of magnet powering (PC) and protection systems (QPS, EE, FMCM and Interlocks) and evaluates the impact of the new deployments, mainly the FGClite and RPADO power converters, on the overall performance of the machine [...]
2019 - 3 p. - Published in : (2019) , pp. 55-57 Fulltext: PDF;
In : 8th Evian Workshop on LHC beam operation, Evian Les Bains, France, 12 - 14 Dec 2017, pp.55-57
4.
Preparation and Execution of the Electrical Quality Assurance Program On the LHC Superconducting Circuits During the Second Long Shutdown / Ludwin, Jaromir (CERN) ; Bednarek, Mateusz (CERN) ; Bednarski, Mikolaj (CERN ; Cracow, INP) ; Bielewski, Jaroslaw (CERN ; Cracow, INP) ; Bogdali, Pawel (CERN ; Cracow, INP) ; D'Angelo, Giorgio (CERN) ; Daniluk, Witold (CERN ; Cracow, INP) ; Dutkiewicz, Erazm Maria (CERN ; Cracow, INP) ; Grzadziel, Dominik (CERN ; Cracow, INP) ; Janik, Grzegorz (CERN ; Cracow, INP) et al.
The electrical quality assurance (ELQA) of the superconducting circuits of CERN’s Large Hadron Collider (LHC) during its second Long Shutdown (LS2) requires the execution of vast measurement campaigns. Each of 1658 electrical circuits as well as the instrumentation of each of the 1746 individual cryo-assemblies housing magnets, bus-bars and other components of the superconducting circuits, has to undergo a series of tests. [...]
2021 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4002404 Fulltext: PDF;
5.
Performance of the Large Hadron Collider's Cryogenic Bypass Diodes Over the First Two Physics Runs, Future Projects, and Perspectives / D'Angelo, Giorgio (CERN) ; Charifoulline, Zinour (CERN) ; Denz, Reiner (CERN) ; Favre, Mathieu (CERN) ; Hagedorn, Dietrich (CERN) ; Monteuuis, Arnaud (CERN) ; Rodriguez-Mateos, Felix (CERN) ; Siemko, Andrzej (CERN) ; Stachon, Krzysztof (CERN) ; Verweij, Arjan (CERN) et al.
Cryogenic bypass diodes have been installed in all superconducting dipole magnets (1232) and quadrupole magnets (392) of the Large Hadron Collider (LHC) at CERN, and operated during the physics runs since 2009. The bypass diodes are a fundamental ingredient of the quench protection system for those main dipoles and quadrupoles magnets. [...]
2020 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4002404
6.
Upgrade of the Arc Interconnection Verification System for the Large Hadron Collider / Bednarski, Mikolaj (Cracow, INP) ; Jurkiewicz, Piotr (Cracow, INP) ; Ludwin, Jaromir (Cracow, INP) ; Wojas, Damian (Cracow, INP) ; Bednarek, Mateusz (CERN) ; D'Angelo, Giorgio (CERN)
This article presents the design and construction of a new version of an automated, highly efficient system for validation of connections between superconducting magnets in the Large Hadron Collider at CERN, Genève, Switzerland.The design of the new version is based on the existing comprehensive system for electrical measurements and is its integral part. The new system is dedicated to perform multi channel resistance measurements and is to be used during machine assembly and magnets replacement..
IEEE, 2019 - 5 p. - Published in : 10.23919/MIXDES.2019.8787158
In : 26th International Conference on Mixed Design of Integrated Circuits and System, Rzeszow, Poland, 27 - 29 Jun 2019, pp.106-110
7.
Characterization of the radiation tolerance of cryogenic diodes for the High Luminosity LHC inner triplet circuit / Will, Andreas (KIT, Karlsruhe ; CERN) ; D'Angelo, G (CERN) ; Denz, R (CERN) ; Hagedorn, D (CERN) ; Monteuuis, A (CERN) ; Ravaioli, E (CERN) ; Rodriguez Mateos, F (CERN) ; Siemko, A (CERN) ; Stachon, K (CERN) ; Verweij, A (CERN) et al.
Cryogenic bypass diodes are part of the baseline powering layout for the circuits of the new Nb3Sn based final focus magnets of the high luminosity Large Hadron Collider. They will protect the magnets against excessive transient voltages during a nonuniform quenching process. [...]
2020 - 10 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 053502 Fulltext from Publisher: PDF;
8.
Characterisation of the radiation hardness of cryogenic bypass diodes for the HL-LHC inner triplet quadrupole circuit / Wollmann, Daniel (CERN) ; Bernhard, Axel (KIT, Karlsruhe) ; Cangialosi, Chiara (CERN) ; Cerutti, Francesco (CERN) ; D'Angelo, Giorgio (CERN) ; Danzeca, Salvatore (CERN) ; Denz, Reiner (CERN) ; Favre, Mathieu (CERN) ; Garcia Alia, Ruben (CERN) ; Hagedorn, Dietrich (CERN) et al.
The powering layout of the new HL-LHC Nb3Sn triplet circuits is the use of cryogenic bypass diodes, where the diodes are located inside an extension to the magnet cryostat, operated in superfluid helium and exposed to radiation. Therefore, the radiation hardness of different type of bypass diodes has been tested at low temperatures in CERN’s CHARM irradiation facility during the operational year 2018. [...]
CERN-ACC-2019-265.- 2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-THPTS067 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPTS067
9.
Experimental Setup to Characterize the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Circuits / Will, Andreas (CERN ; KIT, Karlsruhe) ; Bernhard, Axel (KIT, Karlsruhe) ; D'Angelo, Giorgio (CERN) ; Denz, Reiner (CERN) ; Favre, Mathieu (CERN) ; Hagedorn, Dietrich (CERN) ; Kirby, Glyn (CERN) ; Kistrup, Lucas (Unlisted, DK) ; Koettig, Torsten (CERN) ; Monteuuis, Arnaud (CERN) et al.
For the high luminosity upgrade of the Large Hadron Collider (LHC), it is planned to replace the existing triplet quadrupole magnets with Nb₃Sn quadrupole magnets, which provide a comparable integrated field gradient with a significantly increased aperture. These magnets will be powered through a novel superconducting link based on MgB₂ cables. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMG006 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMG006
10.
Design, Assembly and Use of a Device to Eliminate Earth Faults Caused by Metallic Debris in the LHC Main Dipole Circuits / Bednarek, Mateusz Jakub (CERN) ; Siemko, Andrzej (CERN) ; Rodriguez-Mateos, Felix (CERN) ; Pietrzak, Pawel (AGH-UST, Cracow) ; Stachón, Krzysztof (CERN) ; D'Angelo, Giorgio (CERN) ; Pemberton, Stephen (CERN)
The superconducting dipole magnets of the Large Hadron Collider operate in a superfluid helium bath at 1.9K. As a part of the magnet quench protection system, each dipole magnet is equipped with a bypass diode located in the helium bath. [...]
2017 - 1 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2017) 4005805
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4005805

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