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Accelerator Physics

Derniers ajouts:
2019-12-05
17:28
LHC MD4243: Q22 optics in TI2 / Velotti, Francesco Maria (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Goddard, Brennan (CERN) ; Hessler, Christoph ; Kain, Verena (CERN) ; Chapochnikova, Elena (CERN) ; Timko, Helga (CERN)
This MD shows the feasibility of operating TI2 with an optics matched to the SPS Q22 optics.Optics studies in the transfer line (TL) were performed together with an injection voltage scan toassess, also, the longitudinal quality of the injected single bunch..
CERN-ACC-NOTE-2019-0054.
- 2019. - 5 p.
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2019-11-26
14:03
Performance and Operational Aspects of High-Luminosity LHC Operational Scenarios / Medina Medrano, Luis Eduardo
The High-Luminosity LHC (HL-LHC) is the upgrade of the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) aiming at the full exploitation of the collider, with operations scheduled to start after 2025 [...]
CERN-THESIS-2019-219 - 223 p.

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2019-11-25
12:13
A new proposal for damping the resonances in CERN accelerators, using HOM couplers / Gilardi, Antonio
Parasitic resonances are a fundamental problem in the world of accelerators (there are also resonating cavities, but in this case the resonance is designed and is used to accelerate the beam) [...]
CERN-THESIS-2017-480 https://doi.org/10.1016/j.measurement.2019.07.034. - volume = "146", pages = "938 - 947" : Measurement, 2019-11-01. - 136 p.

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2019-11-13
11:23
LHeC optics with β∗ = 10 cm and L∗ = 15 m / Cruz Alaniz, Emilia (University of Liverpool (GB)) ; Martin, Roman ; Tomas Garcia, Rogelio (CERN)
New proton optics have been designed for LHeC taking into account new final focus magnet designs and ensuring a full compatibility with HL-LHC version 1.3. [...]
CERN-ACC-NOTE-2019-0049.
- 2019. - 17 p.
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2019-11-13
09:45
Optics-measurement-based Beam Position Monitor Calibration. / Garcia-Tabares Valdivieso, Ana
Accurate measurements of the focusing properties of an accelerator are essential for proper operation of a synchrotron, both for the machine protection and for the performance of the experiment [...]
CERN-THESIS-2019-211 - 153 p.

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2019-11-13
07:58
Modelling and Control of the HL-LHC Nested Magnet Circuits at CERN / Yammine, Samer (CERN) ; Thiesen, Hugues (CERN)
In the scope of the High Luminosity - Large Hadron Collider project at CERN, six new superconducting quadrupole electromagnets are required for the final focusing of the beam before proton-to-proton collisions. To optimize the powering scheme, the quadrupoles will be powered in series by one high-current two-quadrant converter. [...]
2019 - 6 p. - Published in : 10.1109/COMPEL.2019.8769677
In : 20th Workshop on Control and Modeling for Power Electronics, Toronto, Canada, 16 - 19 Jun 2019, pp.1-6

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2019-11-13
07:58
Combined Testing And Validation Strategy For The New LHC Blm Processing Module / Schramm, V (CERN) ; Saccani, M (CERN) ; Viganò, W (CERN) ; Bertsche, B (Stuttgart U.)
A comprehensive strategy to test a new digital acquisition board has been implemented by the Beam Instrumentation Group of the European Organization for Nuclear Research (CERN) as part of a wider methodology for the design, production, test, and operation of high dependability electronic systems. This includes test benches for component and functional testing during production, as well as for validation and burn-in upon reception. [...]
2019 - 7 p. - Published in : 10.1109/RAMS.2019.8769268
In : 65th Annual Reliability & Maintainability Symposium, Orlando, USA, 28 - 31 Jan 2019, pp.1-7

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2019-11-01
06:03
SixTrack project: Status, runtime environment, and new developments / De Maria, Riccardo (CERN) ; Andersson, Joel (CERN) ; Field, Laurence (CERN) ; Giovannozzi, Massimo (CERN) ; Hermes, Pascal (CERN) ; Hoimyr, Nils (CERN) ; Iadarola, Giovanni (CERN) ; Kostoglou, Sofia (CERN) ; Maclean, Ewen (CERN ; U. Malta) ; McIntosh, Eric (CERN) et al.
SixTrack is a single-particle tracking code for high-energy circular accelerators routinely used at CERN for the Large Hadron Collider (LHC), its luminosity upgrade (HL-LHC), the Future Circular Collider (FCC), and the Super Proton Synchrotron (SPS) simulations. The code is based on a 6D symplectic tracking engine, which is optimised for long-term tracking simulations and delivers fully reproducible results on several platforms. [...]
2019 - 7 p. - Published in : 10.18429/JACoW-ICAP2018-TUPAF02 Fulltext from publisher: PDF;
In : 13th International Computational Accelerator Physics Conference (ICAP 2018), Key West, FL, USA, 20 - 24 Oct 2018, pp.TUPAF02

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2019-11-01
06:03
Space charge and transverse instabilities at the CERN SPS and LHC / Métral, Elias (CERN) ; Amorim, David (CERN) ; Arduini, Gianluigi (CERN) ; Bartosik, Hannes (CERN) ; Benedetto, Elena (CERN) ; Burkhardt, Helmut (CERN) ; Li, Kevin (CERN) ; Oeftiger, Adrian (CERN) ; Quatraro, Diego (CERN) ; Rumolo, Giovanni (CERN) et al.
At the CERN accelerator complex, it seems that only the highest energy machine in the sequence, the LHC, with space charge (SC) parameter close to one, sees the predicted beneficial effect of SC on transverse coherent instabilities. In the other circular machines of the LHC injector chain (PSB, PS and SPS), where the SC parameter is much bigger than one, SC does not seem to play a major (stabilising) role, and it is maybe the opposite in the SPS. [...]
2019 - 7 p. - Published in : 10.18429/JACoW-ICAP2018-SUPAG01 Fulltext from publisher: PDF;
In : 13th International Computational Accelerator Physics Conference (ICAP 2018), Key West, FL, USA, 20 - 24 Oct 2018, pp.SUPAG01

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2019-11-01
06:03
HOM-mitigation for future SPS 33-cell 200 MHz accelerating structures / Kramer, Patrick (CERN ; RWTH Aachen U.) ; Vollinger, Christine (CERN)
The CERN SPS 200 MHz travelling wave (TW) accelerating structures pose an intensity limitation for the planned High Luminosity (HL-) LHC upgrade. Higher-order modes (HOMs) around 630 MHz have been identified as one of the main sources of longitudinal multi-bunch instabilities. [...]
2019 - 7 p. - Published in : 10.18429/JACoW-ICAP2018-SAPAG04 Fulltext from publisher: PDF;
In : 13th International Computational Accelerator Physics Conference (ICAP 2018), Key West, FL, USA, 20 - 24 Oct 2018, pp.SAPAG04

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