CERN Accelerating science

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1.
LHC Heavy-Ion Collimation Quench Test at 6.37Z TeV / Hermes, Pascal Dominik (Westfaelische Wilhelms-Universitaet Muenster (DE)) ; Auchmann, Bernhard (CERN) ; Bruce, Roderik (CERN) ; Hofle, Wolfgang (CERN) ; Holzer, Eva Barbara (CERN) ; Kalliokoski, Matti (Helsinki Institute of Physics (FI)) ; Kotzian, Gerd (CERN) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (CERN) ; Quaranta, Elena (Politecnico di Milano (IT)) et al.
This note summarizes the collimation quench test MD with 208Pb82+ beams at 6.37Z TeV in which a quench of a dipole magnet in the dispersion suppressor (DS) downstream of the betatron collimation region (IR7) was achieved. [...]
CERN-ACC-NOTE-2016-0031.
- 2016. - 10 p.
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2.
Collimation quench test with 6.5 TeV proton beams / Salvachua Ferrando, Belen Maria (CERN) ; Auchmann, Bernhard (CERN) ; Bruce, Roderik (CERN) ; Hermes, Pascal Dominik (Westfaelische Wilhelms-Universitaet Muenster (DE)) ; Holzer, Eva Barbara (CERN) ; Jacquet, Delphine (CERN) ; Kalliokoski, Matti (Helsinki Institute of Physics (FI)) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN) et al.
We show here the analysis of the MD test that aimed to quench the superconducting magnets in the dispersion suppressor region downstream of the main betatron collimation system. [...]
CERN-ACC-NOTE-2016-0015.
- 2016. - 13 p.
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MD 7224: LHC collimation quench test with protons / Hermes, Pascal Dominik (CERN) ; Abramov, Andrey (CERN) ; Bruce, Roderik (CERN) ; Calzolari, Daniele (Universita e INFN, Padova (IT)) ; D'Andrea, Marco (CERN) ; Giovannozzi, Massimo (CERN) ; Hernalsteens, Cedric (CERN) ; Lechner, Anton (CERN) ; Lindstrom, Bjorn Hans Filip (CERN) ; Mirarchi, Daniele (CERN) et al.
This note describes a collimation quench test performed at the CERN Large Hadron Collider. [...]
CERN-ACC-NOTE-2023-0024.
- 2023.
4.
LHC BFPP Quench Test with Ions (2015) / Schaumann, Michaela (CERN) ; Alemany Fernandez, Reyes (CERN) ; Bahamonde Castro, Cristina (CERN) ; Auchmann, Bernhard (CERN) ; Chetvertkova, Vera (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE)) ; Giachino, Rossano (CERN) ; Jowett, John (CERN) ; Kalliokoski, Matti (Helsinki Institute of Physics (FI)) ; Lechner, Anton (CERN) ; Mertens, Tom (CERN) et al.
The 2015 Pb-Pb collision run of the LHC operated at a beam energy of 6.37Z TeV [...]
CERN-ACC-NOTE-2016-0024.
- 2016.
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Collimation quench test with 4 TeV proton beams / Salvachua, B ; Bruce, R ; Cauchi, M ; Deboy, D ; Hofle, W ; Holzer, EB ; Jacquet, D ; Lari, L ; Nebot, E ; Mirarchi, D et al.
In 2013, at the end of the LHC physics run I, several quench tests took place with the aim to measure the quench limit of the LHC superconducting magnets. [...]
CERN-ACC-NOTE-2014-0036.
- 2014. - 16 p.
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Handling 1 MW losses with the LHC collimation system / Salvachua, B (CERN) ; Bruce, R (CERN) ; Carra, F (CERN) ; Cauchi, M (CERN) ; Del Busto, E (CERN) ; Höfle, W (CERN) ; Holzer, E (CERN) ; Jacquet, D (CERN) ; Mirarchi, D (CERN) ; Redaelli, S (CERN) et al.
The LHC superconducting magnets in the dispersion suppressor of IR7 are the most exposed to beam losses leaking from the betatron collimation system and represent the main limitation for the halo cleaning. In 2013, quench tests were performed at 4 TeV to improve the quench limit estimates, which determine the maximum allowed beam loss rate for a given collimation cleaning. [...]
CERN-ACC-2014-0133.- Geneva : CERN, 2014 - 4 p. Fulltext: PDF; External link: Published version from JaCoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.174
7.
β*-Reach – IR7 Collimation Hierarchy Limit and Impedance / Mereghetti, Alessio (CERN) ; Biancacci, Nicolo (CERN) ; Bruce, Roderik (CERN) ; Carver, Lee Robert (CERN) ; Kwee-Hinzmann, Regina (University of London (GB)) ; Metral, Elias (CERN) ; Mirarchi, Daniele (CERN) ; Quaranta, Elena (Politecnico di Milano (IT)) ; Redaelli, Stefano (CERN) ; Rossi, Adriana (CERN) et al.
This report summarises the results of the MD314 about the hierarchy limit of the IR7 collimation system and its impedance. [...]
CERN-ACC-NOTE-2016-0007.
- 2016. - 15 p.
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Active halo control through narrow-band excitation with the ADT / Wagner, Joschka (Johann-Wolfgang-Goethe Univ. (DE)) ; Bruce, Roderik (CERN) ; Garcia Morales, Hector (University of London (GB)) ; Hofle, Wolfgang (CERN) ; Kotzian, Gerd (CERN) ; Kwee-Hinzmann, Regina (University of London (GB)) ; Langner, Andy Sven (CERN) ; Mereghetti, Alessio (CERN) ; Quaranta, Elena (Politecnico di Milano (IT)) ; Redaelli, Stefano (CERN) et al.
During this MD, the capabilities of an active halo control for beam tail depletion in the LHC were tested. [...]
CERN-ACC-NOTE-2016-0009.
- 2016. - 25 p.
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9.
Collimation with tighter TCTs at β*=40 cm / Bruce, Roderik (CERN) ; Hermes, Pascal Dominik (Westfaelische Wilhelms-Universitaet Muenster (DE)) ; Kwee-Hinzmann, Regina (University of London (GB)) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (CERN) ; Quaranta, Elena (Politecnico di Milano (IT)) ; Redaelli, Stefano (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Valentino, Gianluca (University of Malta (MT)) ; Valloni, Alessandra (University of Manchester (GB)) et al.
MD 310 was carried out on August 28 2015, in order to investigate the collimation performance using nominal optics with β* =40 cm, 2 σ retraction collimator settings in IR7, and the very tight TCT settings which are necessary to protect the small normalized aperture. [...]
CERN-ACC-NOTE-2015-0036.
- 2015. - 22 p.
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10.
Different approaches for minimising proton beam losses on the 11 T dipole in the IR7 dispersion suppressor / Belli, Eleonora ; Bruce, Roderik (CERN) ; Giovannozzi, Massimo (CERN) ; Mereghetti, Alessio ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN)
The High Luminosity Large Hadron Collider (HL–LHC) project aims at increasing the integrated luminosity by a factor of 10 beyond the LHC design value. [...]
CERN-ACC-NOTE-2021-0002.
- 2021.
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