|
1.
|
Hardware Commissioning of the HL-LHC Inner Triplet String Facility at CERN: Individual System and Short Circuit Tests
/ Yammine, Samer (CERN) ; Antoine, Alain (CERN) ; Onufrena, Aleksandra (CERN) ; Perin, Antonio (CERN) ; Panev, Bozhidar Ivanov (CERN) ; Bozzini, Davide (CERN) ; Coulot, Emilien (CERN) ; Thiesen, Hugues (CERN) ; Zerlauth, Markus (CERN) ; Bajko, Marta (CERN) et al.
The goal of the High Luminosity-Large Hadron Collider (HL-LHC) Inner Triplet (IT) String test, is to validate the assembly and connection procedures and tools required for its construction, to assess the collective behavior of the superconducting magnet chain in conditions as close as possible to those of their operation in the HL-LHC and to provide a training opportunity for the equipment teams for their work in the LHC tunnel. The IT String includes the systems required for operation at nominal conditions, such as the cryogenics, powering and quench protection systems. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPS50
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPS50
|
|
|
2.
|
Chapter 12: Machine Protection in the High Luminosity LHC
/ Apollonio, A ; Bélanger, P (CERN) ; Carrillo, D (CERN) ; Denz, R (CERN) ; Mateos, F Rodriguez (CERN) ; Panev, B (CERN) ; Siemko, A (CERN) ; Uythoven, J (CERN) ; Verweij, A (CERN) ; Wollmann, D (CERN) et al.
In the high luminosity era of the LHC, the energy stored in the two beams will nearly double as compared with the design value of the current LHC and the beta functions will significantly increase in critical locations. In addition, novel equipment like Nb3Sn based superconducting magnets, crab cavities, hollow e-lenses and others will be installed. [...]
2024 - 19 p.
- Published in : Adv. Ser. Direct. High Energy Phys. 31 (2024) 297-315
Fulltext: PDF;
In : The High Luminosity Large Hadron Collider, pp.297-315
|
|
|
3.
|
Reliability Analysis of the HL-LHC Energy Extraction System
/ Blaszkiewicz, Milosz (CERN) ; Apollonio, Andrea (CERN) ; Cartier-Michaud, Thomas (CERN) ; Panev, Bozhidar Ivanov (CERN) ; Pojer, Mirko (CERN) ; Wollmann, Daniel (CERN)
The energy extraction systems for the protection of the new HL-LHC superconducting magnet circuits are based on vacuum breakers. This technology allows to significantly reduce the switch opening time and increases the overall system reliability with reduced maintenance needs. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 747-750
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.747-750
|
|
|
4.
|
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
|
|
|
5.
|
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
|
|
|
6.
|
Design and Manufacturing of the First Industrial-Grade CLIQ Units for the Protection of Superconducting Magnets for the High-Luminosity LHC Project at CERN
/ Rodriguez-Mateos, Felix (CERN) ; Carrillo, David (CERN) ; Balampekou, Stavroula (CERN) ; Dahlerup-Petersen, Knud (CERN) ; Favre, Mathieu (CERN) ; Mourao, Joaquim (CERN) ; Panev, Bozhidar (CERN)
The newly developed concept of Coupling-Loss Induced Quench (CLIQ) used in the domain of superconducting magnets quench protection has opened a new path towards efficient magnet protection. Subsequently to the first trials using ad hoc solutions in order to confirm functionality and performance of the method, two pre-series of three units each with different hardware configurations have been recently manufactured at CERN. [...]
2018 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4702504
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4702504
|
|
|
7.
|
Test results of a 7.5 kA semi-conductor prototype switch as modular switchgear in energy extraction systems for the HL-LHC magnet test facility
/ Coelingh, G J (CERN) ; Austnes, P F (CERN) ; Bednarek, M (CERN) ; Dahlerup-Petersen, K (CERN) ; Dinius, A (CERN) ; Erokhin, A (CERN) ; Favre, M (CERN) ; Karaventzas, V D (CERN) ; Michniuk, S (CERN) ; Panev, B (CERN) et al.
The superconducting magnets, intended for use in the LHC High Luminosity (HL-LHC) project at CERN are based on Nb$_3$Sn technology. Powering of prototypes of such magnets with up to tens of kilo-Amperes is required for detailed studies of the quench behavior as well as an evaluation of the associated magnet protection equipment. [...]
2016 - 6 p.
- Published in : 10.1109/IPMHVC.2016.8012877
In : 2016 IEEE International Power Modulator and High Voltage Conference, San Francisco, CA, USA, 5 - 9 Jul 2016, pp.514-519
|
|
|
8.
|
Design and operational aspects of a bi-polar semi-conductor switch as possible candidate for replacement of electro-mechanical switchgear in energy extraction systems for the LHC corrector magnet circuits
/ Coelingh, G J (CERN) ; Dahlerup-Petersen, K (CERN) ; Erokhin, A (CERN) ; Panev, B (CERN)
More than 600 DC opening switches assure the role of energy extraction in the powering circuits of the bipolar, superconducting beam corrector magnet chains in the LHC collider at CERN. Although the operational experience from several years of extensive use has proven the high reliability of the electro-mechanical breakers, their relatively high need for regular, preventive maintenance and subtle adjustments as well as their limited lifetime has stimulated the interest in considering alternative solutions. [...]
2014 - 4 p.
- Published in : 10.1109/IPMHVC.2014.7287323
In : 2014 IEEE International Power Modulator and High Voltage Conference, Santa Fe, NM, USA, 1 - 5 Jun 201, pp.508-511
|
|
|
9.
|
Qualification of the Bypass Continuity of the Main Dipole Magnet Circuits of the LHC
/ Rowan, Scott (CERN) ; Auchmann, Bernhard (CERN) ; Brodzinski, Krzysztof (CERN) ; Charifoulline, Zinour (CERN) ; Panev, Bozhidar Ivanov (CERN) ; Pfeffer, Howard (Fermilab) ; Rodriguez-Mateos, Felix (CERN) ; Romera, Iván (CERN) ; Schmidt, Ruediger (CERN) ; Siemko, Andrzej (CERN) et al.
The copper-stabilizer continuity measurement (CSCM) was devised in order to attain complete electrical qualification of all busbar joints, lyres, and the magnet bypass connections in the 13~kA circuits of the LHC. A CSCM is carried out at 20 K, i.e., just above the critical temperature, with resistive magnets. [...]
CERN-ACC-2015-232.-
2015 - 4 p.
- Published in : 10.18429/JACoW-IPAC2015-WEPHA017
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPHA017
|
|
|
10.
|
Resistive plate chamber commissioning and performance in CMS
/ Roselli, G (Bari U. ; INFN, Bari) ; Abbrescia, M (Bari U. ; INFN, Bari) ; Iaselli, G (Bari U. ; INFN, Bari) ; Marangelli, B (Bari U. ; INFN, Bari) ; Natalin, S (Bari U. ; INFN, Bari) ; Nuzzo, S (Bari U. ; INFN, Bari) ; Pugliese, G (Bari U. ; INFN, Bari) ; Romano, F (Bari U. ; INFN, Bari) ; Trentadue, R (Bari U. ; INFN, Bari) ; Tupputi, S (Bari U. ; INFN, Bari) et al.
The CMS muon system is conceived for trigger and muon track reconstruction. The redundancy and robustness of the system are guaranteed by three complementary subsystems: drift tube in the barrel, cathode strip chamber in the end-cap and resistive plate chamber in barrel and end-cap. [...]
2009
- Published in : Nucl. Instrum. Methods Phys. Res., A 602 (2009) 696-699
|
|