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CERN Document Server Encontrados 18 registros  1 - 10siguiente  ir al registro: La búsqueda tardó 0.66 segundos. 
1.
MD1447 –β∗–Reach: 2016 IR7 Collimation Hierarchy Limit and Impedance / Mereghetti, Alessio (CERN) ; Amorim, David (U. Grenoble Alpes) ; Biancacci, Nicolo (CERN) ; Bonanno, Edoardo (Palermo U.) ; Carver, Lee Robert (Liverpool U.) ; Ferrazza, Diego (INFN, Rome ; Rome U.) ; Lefevre, Thibaut (CERN) ; Levens, Tom (CERN) ; Metral, Elias (CERN) ; Quaranta, Elena (CERN) et al.
This report summarizes the results of MD1447 about the hierarchy limit of the LHC collimation system in IR7 at 6.5 TeV and its impedance, performed during MD block 1 of 2016. [...]
CERN-ACC-NOTE-2020-0021.
- 2020. - 24 p.
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2.
SixTrack for Cleaning Studies: 2017 Updates / Mereghetti, Alessio (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; De Maria, Riccardo (CERN) ; Ferrari, Alfredo (CERN) ; Fiascaris, Maria (CERN) ; Hermes, Pascal (CERN) ; Mirarchi, Daniele (CERN) ; Molson, James (Orsay, LAL) ; Ortega, Pablo (CERN) et al.
SixTrack is a single particle tracking code for simulating beam dynamics in ultra-relativistic accelerators. It is widely used at the European Organisation for Nuclear Research (CERN) for predicting dynamic aperture and cleaning inefficiency in large circular machines like the Super Proton Synchrotron (SPS), the Large Hadron Collider (LHC) and the Future Circular Collider (FCC). [...]
CERN-ACC-2017-288.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-THPAB046 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPAB046
3.
Investigation of collimator materials for the High Luminosity Large Hadron Collider / Quaranta, Elena
This PhD thesis work has been carried out at the European Organisation for Nuclear Research (CERN), Geneva, Switzerland), in the framework of the High Luminosity (HL) upgrade of the Large Hadron Collider (LHC) [...]
CERN-THESIS-2017-101 - 176 p.

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4.
Detailed IR aperture measurements / Bruce, Roderik (CERN) ; De Maria, Riccardo (CERN) ; Garcia Morales, Hector (University of London (GB)) ; Giovannozzi, Massimo (CERN) ; Hermes, Pascal Dominik (CERN) ; Mirarchi, Daniele (CERN) ; Quaranta, Elena (Politecnico di Milano (IT)) ; Redaelli, Stefano (CERN) ; Rossi, Carlo (CERN) ; Skowronski, Piotr Krzysztof (CERN) et al.
MD 1673 was carried out on October 5 2016, in order to investigate in more detail the available aperture in the LHC high-luminosity insertions at 6.5 TeV and β∗=40 cm. [...]
CERN-ACC-NOTE-2016-0075.
- 2016. - 11 p.
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5.
Validation of Simulation Tools for Fast Beam Failure Studies in the LHC / Quaranta, Elena (CERN) ; Bracco, Chiara (CERN) ; Bruce, Roderik (CERN) ; Redaelli, Stefano (CERN)
The LHC collimation system protects passively the most sensitive machine equipment against beam losses. In particular, collimators are the last line of defense in case of single-turn failures that cannot be caught by the standard interlock system. [...]
CERN-ACC-2016-215.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-WEPMW033 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPMW033
6.
Cleaning Performance of the Collimation System of the High Luminosity Large Hadron Collider / Mirarchi, Daniele (CERN) ; Appleby, Robert (U. Manchester (main)) ; Bertarelli, Alessandro (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Garcia Morales, Hector (Royal Holloway, U. of London) ; Hermes, Pascal (CERN) ; Kwee-Hinzmann, Regina (Royal Holloway, U. of London) ; Lechner, Anton (CERN) ; Mereghetti, Alessio (CERN) et al.
Different upgrades of the LHC will be carried out in the framework of the High Luminosity project (HL-LHC), where the total stored energy in the machine will increase up to about 700 MJ. This unprecedented stored energy poses serious challenges for the collimation system, which was designed to handle safely up to about 360 MJ. [...]
CERN-ACC-2016-216.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-WEPMW030 Fulltext: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPMW030
7.
First Attempts at using Active Halo Control at the LHC / Wagner, Joschka (Frankfurt U. ; CERN) ; Bruce, Roderik (CERN) ; Garcia Morales, Hector (CERN) ; Höfle, Wolfgang (CERN) ; Kotzian, Gerd (CERN) ; Kwee-Hinzmann, Regina (CERN) ; Langner, Andy (CERN) ; Mereghetti, Alessio (CERN) ; Quaranta, Elena (CERN) ; Redaelli, Stefano (CERN) et al.
The beam halo population is a non-negligible factor for the performance of the LHC collimation system and the machine protection. In particular this could become crucial for aiming at stored beam energies of 700 MJ in the High Luminosity (HL-LHC) project, in order to avoid beam dumps caused by orbit jitter and to ensure safety during a crab cavity failure. [...]
FERMILAB-CONF-16-276-AD-APC; CERN-ACC-2016-218.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-WEPMW028 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPMW028
8.
Improved Aperture Measurements at the LHC and Results from their Application in 2015 / Hermes, Pascal (CERN) ; Bruce, Roderik (CERN) ; Fiascaris, Maria (CERN) ; Garcia, Hector (CERN) ; Giovannozzi, Massimo (CERN) ; Kwee-Hinzmann, Regina (Royal Holloway, U. of London) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (CERN) ; Quaranta, Elena (CERN ; Milan Polytechnic) ; Redaelli, Stefano (CERN) et al.
A good knowledge of the available aperture in the LHC is essential for a safe operation due to the risk of magnet quenches or even damage in case of uncontrolled beam losses. Experimental validations of the available aperture are therefore crucial and were in the past carried out by either a collimator scan combined with beam excitations or through the use of local orbit bumps. [...]
CERN-ACC-2016-258.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-TUPMW014 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.TUPMW014
9.
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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10.
TCDQ-TCT retraction and losses during asynchronous beam dump / Bracco, Chiara (CERN) ; Bruce, Roderik (CERN) ; Quaranta, Elena (Politecnico di Milano (IT))
The protection provided by the TCDQs in case of asynchronous beam dump depends strongly on their correct setup. [...]
CERN-ACC-NOTE-2016-0017.
- 2016. - 15 p.
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