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First Experience of Crystal Collimators During LHC Special Runs and Plans for the Future
/ D'Andrea, Marco (CERN ; U. Padua (main)) ; Avati, Valentina (CERN ; AGH-UST, Cracow) ; Bruce, Roderik (CERN) ; Butcher, Mark (CERN) ; Deile, Mario (CERN) ; Di Castro, Mario (CERN) ; Dziedzic, Bartosz (Cracow, INP) ; Garcia Morales, Hector (CERN ; Royal Holloway, U. of London) ; Gavrikov, Yury (St. Petersburg, INP ; CERN) ; Hiller, Karlheinz (DESY, Zeuthen) et al.
Bent crystals can deflect charged particles by trapping them within the potential well generated by neighboring crystalline planes and forcing them to follow the curvature of the crystal itself. This property has been extensively studied over the past decade at the CERN accelerator complex, as well as in other laboratories, for a variety of applications, ranging from beam collimation to beam extraction and in-beam fixed target experiments. [...]
2022 - 6 p.
- Published in : JACoW HB 2021 (2022) 12-17
Fulltext: PDF;
In : 64th ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams (HB 2021), Batavia, Illinois, United States, 4 - 9 Oct 2021, pp.12-17
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Detailed Electromagnetic Characterisation of HL-LHC Low Impedance Collimators
/ Kurtulus, Adnan (CERN ; ETH, Zurich (main)) ; Accentura, Carlotta (CERN) ; Biancacci, Nicolo (CERN) ; Carra, Federico (CERN) ; Caspers, Fritz (CERN) ; Chitnis, Ninad (CERN) ; Giordano, Francesco (CERN) ; Illan Fiastre, Ricardo (CERN) ; Joly, Sébastien (CERN) ; Lamas Garcia, Inigo (CERN) et al.
The High Luminosity Large Hadron Collider (HL-LHC) project will upgrade the LHC machine to allow operation with increased luminosity for the experiments. In order to achieve this goal, different operational parameters of the machine need to be pushed beyond the present design values, including the stored beam energy. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 4258-4261
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4258-4261
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Crystal Collimation of 20 MJ Heavy-Ion Beams at the HL-LHC
/ D'Andrea, Marco (CERN) ; Bruce, Roderik (CERN) ; Di Castro, Mario (CERN) ; Galluccio, Francesca (INFN, Naples) ; Lamas Garcia, Inigo (CERN) ; Masi, Alessandro (CERN) ; Mirarchi, Daniele (CERN) ; Nevay, Laurence (Royal Holloway, U. of London ; CERN) ; Redaelli, Stefano (CERN) ; Rossi, Roberto (CERN) et al.
The concept of crystal collimation at the Large Hadron Collider (LHC) relies on the use of bent crystals that can deflect halo particles by a much larger angle than the standard multi-stage collimation system. Following an extensive campaign of studies and performance validations, a number of crystal collimation tests with Pb ion beams were performed in 2018 at energies up to 6.37 Z TeV. [...]
2021 - 4 p.
- Published in : 10.18429/JACoW-IPAC2021-WEPAB023
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2644-2647
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MD2193 – Impedance Measurements of the TCSPM Prototype Collimator
/ Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey ; Arsenyev, Sergey ; Azzopardi, Gabriella (CERN) ; Biancacci, Nicolo (CERN) ; Bruce, Roderik (CERN) ; Carver, Lee Robert (University of Liverpool (GB)) ; Fitterer, Miriam ; Giordano, Francesco (Universita e sezione INFN di Napoli (IT)) ; Lamas Garcia, Inigo et al.
In view of the HL–LHC project, it is planned to exchange 9 out 11 of the LHC secondary collimators in IR7, made of graphite, with low–impedance ones. [...]
CERN-ACC-NOTE-2021-0021.
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2021. - 17 p.
Full text
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Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities
/ Makimura, Shunsuke (J-PARC) ; Park, Joon-Soo (Muroran Inst. Tech.) ; Sato, Akira (Osaka U. (main)) ; Matoba, Shiro (J-PARC) ; Kawamura, Naritoshi (J-PARC) ; Yamazaki, Takayuki (J-PARC) ; Ninomiya, Kazuhiko (Osaka U. (main)) ; Tomono, Dai (Osaka U., Res. Ctr. Nucl. Phys.) ; Nakazato, Naofumi (Muroran Inst. Tech.) ; Calviani, Marco (CERN) et al.
The feasibility study for Nano-Infiltration and Transient Eutectic phase process SiC/SiC (NITE SiC/SiC)NITE SiC/SiC as a potential novel target material for pions/muons production at high-power proton accelerators facilities is in progress. Compared with graphite that is the principal target material for pions/muons production, higher transport efficiency and higher oxidation resistance can be expected. [...]
2020 - 6 p.
- Published in : JPS Conf. Proc. 28 (2020) 031005
Fulltext: PDF;
In : 14th International Workshop on Spallation Materials Technology, Fukushima, Japan, 11 - 17 Nov 2018, pp.031005
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MD2202: compensating long-range beam-beam effectin the LHC using DC wires
/ Sterbini, Guido (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Arduini, Gianluigi (CERN) ; Bartosik, Hannes (CERN) ; Bruce, Roderik (CERN) ; Buffat, Xavier (CERN) ; Carver, Lee Robert (University of Liverpool (GB)) ; Cattenoz, Gregory (CERN) ; Effinger, Ewald (CERN) ; Fartoukh, Stephane (CERN) et al.
his note summarizes the program of the LHC Machine Development to assess the potential and limits of the long-range beam-beam compensators held in 2017 (MD2202) [...]
CERN-ACC-NOTE-2019-0052.
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2019. - 52 p.
Full text
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HL-LHC full remote alignment study
/ Herty, Andreas (CERN) ; De Maria, Riccardo (CERN) ; Fessia, Paolo (CERN) ; Gamba, Davide (CERN) ; Giovannozzi, Massimo (CERN) ; Hansen, Jan (CERN) ; Lamas Garcia, Inigo (CERN) ; Mainaud Durand, Helene (CERN) ; Redaelli, Stefano (CERN)
This study explores the benefits of extending the monitoring and remote alignment concept, proposed in the HL-LHC baseline, to additional components of the matching sections of the HL-LHC. The objective of this study was to evaluate the benefits in terms of equipment performance and new opportunities for system simplification. [...]
CERN-ACC-2019-245.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-THPGW057
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPGW057
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8.
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Crystal Collimation Tests with Pb Ion Beams
/ D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Fomin, Alex (NSC Kharkiv Institute of Physics and Technology (UA)) ; Belli, Eleonora (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) et al.
During MD4168, performed on November 27th 2018, silicon crystals for a crystal-assisted collimation system were tested. [...]
CERN-ACC-NOTE-2019-0024.
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2019.
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Operational Aspects of Crystal Collimation with Proton Beams
/ D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Galluccio, Francesca (Universita e sezione INFN di Napoli (IT)) ; Serrano Galvez, Pablo (Universidad de Oviedo (ES)) et al.
During MD4167, performed on September 12th 2018, silicon crystals for a crystal-assisted collimation system were tested, with particular focus on operational aspects such as evaluation of cleaning performances and deployment during dynamical phases of the machine. [...]
CERN-ACC-NOTE-2019-0023.
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2019.
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Crystal Collimation Tests with Proton Beams
/ D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Galluccio, Francesca (Universita e sezione INFN di Napoli (IT)) ; Serrano Galvez, Pablo (Universidad de Oviedo (ES)) et al.
During MD3327, performed in two steps on June 14th and July 27th 2018, silicon crystals for a crystal-assisted collimation system were tested, with particular focus on the newly installed crystal on the horizontal plane of Beam 2. [...]
CERN-ACC-NOTE-2019-0022.
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2019.
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