1.
|
Assessment of MQXF Quench Heater Insulation Strength and Test of Modified Design
/ Baldini, Maria (Fermilab) ; Ambrosio, Giorgio (Fermilab) ; Anerella, Michael D (Brookhaven) ; Bermudez, Susana I (CERN) ; Bossert, Rodger C (Fermilab) ; Ferracin, Paolo (LBL, Berkeley) ; Krave, Steven (Fermilab) ; Mangiarotti, Franco J (CERN) ; Marinozzi, Vittorio (Fermilab) ; Nobrega, Alfred (Fermilab) et al.
The HL-LHC interaction region magnet triplets (Q1,Q2, and Q3) will be composed of superconducting Nb3Sn quadru-poles. The MQXF quadrupole protection system is based on CLIQ (Coupling-Loss Induced Quench system) and outer layer quench heaters.This paper reports a summary of quench heaters to coil high voltage tests performed on MQXF short and long coils in air after fabrication, and in air and He gas after magnet training. [...]
FERMILAB-PUB-20-617-TD.-
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4701305
Fulltext: PDF; External link: Fermilab Accepted Manuscript
In : Applied Superconductivity Conference, Online, 24 Oct - 7 Nov 2020
|
|
2.
|
Study of the Heater-Coil Electrical Insulation for the HL-LHC Low Beta Quadrupoles
/ Marinozzi, Vittorio (Fermilab) ; Ambrosio, Giorgio (Fermilab) ; Baldini, Maria (Fermilab) ; Izquierdo Bermudez, Susana (CERN) ; Ferracin, Paolo (LBL, Berkeley) ; Krave, Steven (Fermilab) ; Muratore, Joseph (BNL, NSLS) ; Nobrega, Alfred (Fermilab) ; Parker, Marcellus (Fermilab) ; Todesco, Ezio (CERN) et al.
In the framework of the HL-LHC project, the present LHC low-β superconducting quadrupoles will be substituted with higher performance Nb3Sn magnets (MQXF) with 11.4 T coil peak field. MQXF coils are impregnated with epoxy resin to reduce risk of stress concentration on the brittle conductor. [...]
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4001705
|
|
3.
|
Quench Protection of the First 4-m-Long Prototype of the HL-LHC Nb$_3$Sn Quadrupole Magnet
/ Ravaioli, E (LBL, Berkeley) ; Ambrosio, G (Fermilab) ; Bortot, L (CERN) ; Ferracin, P (CERN) ; Izquierdo Bermudez, S (CERN) ; Joshi, P (Brookhaven) ; Maciejewski, M (CERN) ; Marinozzi, V (Fermilab) ; Mentink, M (CERN) ; Muratore, J F (Brookhaven) et al.
/LARP
The quadrupole magnets for the LHC upgrade to higher luminosity are jointly developed by CERN and US-LARP (LHC Accelerator Research Program). These Nb3Sn magnets will be protected against overheating after a quench by a combination of heaters bonded to the coil outer surface and CLIQ (Coupling-Loss Induced Quench) units. [...]
FERMILAB-PUB-19-051-TD.-
2019 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4701405
Fulltext: PDF;
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4701405
|
|
4.
|
Quench Protection Studies for the High Luminosity LHC Nb$_3$Sn Quadrupole Magnets
/ Ravaioli, Emmanuele (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bajas, Hugues (CERN) ; Duda, Michal (PSI, Villigen ; CERN) ; Ferracin, Paolo (LBNL, Berkeley) ; Ferradas Troitino, Jose (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Mangiarotti, Franco (CERN) ; Marinozzi, Vittorio (Fermilab) ; Mentink, Matthias (CERN) et al.
Achieving the targets of the High Luminosity LHC project requires the installation of new inner triplet magnet circuits for the final focusing of the particle beams on each side of the two main interaction points. Each of the four circuits will include six 150 mm aperture, 132.2 T/m gradient, Nb$_3$Sn quadrupole magnets to be installed in the LHC tunnel. [...]
FERMILAB-PUB-21-124-TD.-
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4700405
Fulltext from Publisher: PDF;
|
|
5.
|
The HL-LHC Low-$\beta$ Quadrupole Magnet MQXF: from Short Models to Long Prototypes
/ Ferracin, Paolo (CERN) ; Ambrosio, Giorgio (Fermilab) ; Anerella, Michael (Brookhaven) ; Bajas, Hugues (CERN) ; Bajko, Marta (CERN) ; Bordini, Bernardo (CERN) ; Bossert, Rodger (Fermilab) ; Bourcey, Nicolas (CERN) ; Cheng, Daniel W (LBL, Berkeley) ; Chlachidze, Guram (Fermilab) et al.
Among the components to be upgraded in LHC inter- action regions for the HiLumi-LHC projects are the inner triplet (or low-β) quadrupole magnets, denoted as Q1, Q2a, Q2b, and Q3. The new quadrupole magnets, called MQXF, are based on Nb3 Sn superconducting magnet technology and operate at a gradient of 132.6 T/m, with a conductor peak field of 11.4 T. [...]
FERMILAB-PUB-19-008-TD.-
2019 - 9 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4001309
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 9700701
Fulltext: PDF;
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4001309
|
|
6.
|
Magnetic Analysis of the MQXF Quadrupole for the High Luminosity LHC
/ Izquierdo Bermudez, S (CERN ; Madrid Politecnic U., ETSI Minas) ; Fiscarelli, Lucio (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bajas, Hugues (CERN) ; Chlachidze, Guram (Fermilab) ; Ferracin, Paolo (CERN) ; DiMarco, Joseph (Fermilab) ; Stoynev, Stoyan Emilov (Fermilab) ; Todesco, Ezio (CERN) ; Sabbi, GianLuca (LBL, Berkeley) et al.
/LARP
The high-luminosity upgrade of the large hadron collider (HL-LHC) requires new high-field and large-aperture quadrupole magnets for the low-beta inner triplets (MQXF). The US Hilumi-LHC Accelerator Upgrade (HL-LHC AUP) and CERN are jointly developing a 150 mm aperture Nb3Sn magnet. [...]
FERMILAB-PUB-19-054.-
2019 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4901705
Fulltext: PDF;
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4901705
|
|
7.
|
Test Results of the CERN HL-LHC low-$\beta$ Quadrupole Short Models MQXFS3c and MQXFS4
/ Mangiarotti, Franco J (CERN) ; Bajas, Hugues (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bajko, Marta (CERN) ; Bordini, Bernardo (CERN) ; Bourcey, Nicolas (CERN) ; Duda, Michal (Cracow, INP ; CERN) ; Desbiolles, Vincent (CERN) ; Feuvrier, Jerome (CERN) ; Fleiter, Jerome (CERN) et al.
/LARP
For the High Luminosity Upgrade of the CERN Large Hadron Collider, lower $\beta$* quadrupole magnets based on advanced Nb3Sn conductors will be installed on each side of the ATLAS and CMS experiment insertion zones. As part of the technological developments needed to achieve the required field gradient of 132.6 T/m within a 150-mm aperture, short length model magnets, named MQXFS, are tested both at the CERN SM18 and FERMI Lab test facilities. [...]
FERMILAB-PUB-19-055-TD.-
2019 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4001705
Fulltext: PDF;
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4001705
|
|
8.
|
|
9.
|
Quench Protection System Optimization for the High Luminosity LHC Nb $_3$Sn Quadrupoles
/ Ravaioli, E (LBL, Berkeley) ; Ambrosio, G (Fermilab) ; Auchmann, B (CERN) ; Ferracin, P (CERN) ; Maciejewski, M (CERN) ; Rodriguez-Mateos, F (CERN) ; Sabbi, GL (LBL, Berkeley) ; Todesco, E (CERN) ; Verweij, A P (CERN)
The upgrade of the large hadron collider to achieve higher luminosity requires the installation of twenty-four 150 mm aperture, 12 T, $Nb_3Sn$ quadrupole magnets close to the two interaction regions at ATLAS and CMS. The protection of these high-field magnets after a quench is particularly challenging due to the high stored energy density, which calls for a fast, effective, and reliable protection system. [...]
FERMILAB-PUB-16-563-TD.-
2017 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 27 (2017) 4702107
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.4702107
|
|
10.
|
Progress on high luminosity LHC Nb$_{3}$Sn magnets
/ Todesco, Ezio (CERN) ; Annarella, M (Brookhaven) ; Ambrosio, Giorgio (Fermilab) ; Apollinari, Giorgio (Fermilab) ; Ballarino, Amalia (CERN) ; Bajas, H (CERN) ; Bajko, Marta (CERN) ; Bordini, Bernardo (CERN) ; Bossert, R (Fermilab) ; Bottura, Luca (CERN) et al.
The HL-LHC project aims at allowing to increase the collisions in the Large Hadron Collider by a factor ten in the decade 2025 - 2035. One essential element are the superconducting magnets around the interaction region points, where large aperture magnets will be installed to allow to further reduce the beam size in the interaction point. [...]
FERMILAB-PUB-18-302-TD.-
2018 - 9 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4008809
Fulltext: PDF;
In : 13th European Conference on Applied Superconductivity, ICCG, Geneva, Switzerland, 17 - 21 Sep 2017, pp.4008809
|
|