CERN Accelerating science

SPS and CNGS

Последние добавления:
2021-01-13
19:08
Optimisation of Slow Extraction and Beam Delivery from Synchrotrons / Arrutia Sota, Pablo Andreas (University of Oxford (GB)) ; Fraser, Matthew Alexander (CERN) ; Gibson, Stephen (University of London (GB))
Third-integer slow extraction is a commonly used extraction technique for a variety of ap- plications where long and stable spills are needed. The process of extracting, transporting and even splitting the beam before reaching the user inevitably result in beam loss. [...]
CERN-THESIS-2020-259.- Fulltext: PDF; External link: Approve this document (restricted)

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2021-01-13
16:20
Development of an LHC model in BDSIM to study collimation cleaning and beam-induced backgrounds at ATLAS / Walker, Stuart Derek (University of London (GB))
The Large Hadron Collider (LHC) is at the frontier of high energy physics. At 27 km in circumference and operating at the highest achieved energy to date at 6.5 TeV, it is reliant on cold superconducting magnets throughout the machine to steer and control the beam. [...]
CERN-THESIS-2019-410.- 194 p. Fulltext: PDF; External link: Approve this document (restricted)

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2021-01-13
13:50
Production of mass separated $^{11}$C beams for PET-aided hadron therapy / Stegemann, Simon Thomas (CERN)
Ever since the first discovery of an artificially-generated radionuclide, the production of radioisotopes and radioactive ion beams has been an essential tool in nuclear physics research for the study of the atomic nucleus and its properties. Furthermore, the very same discovery is considered as one of the cornerstones in nuclear medicine, where radioisotopes are exploited for the diagnosis and therapy of cancer [...]
CERN-THESIS-2020-257.- Fulltext: PDF; External link: Approve this document (restricted)

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2021-01-06
04:38
Investigation on steering of ultrarelativistic $e^{\pm}$ beam through an axially oriented bent crystal / Bandiera, L. (INFN, Ferrara) ; Kyryllin, I.V. (Kharkov, KIPT ; Kharkov Natl. U.) ; Brizzolari, C. (Insubria U., Como ; INFN, Milan Bicocca) ; Camattari, R. (INFN, Ferrara ; Ferrara U.) ; Charitonidis, N. (CERN) ; De Salvador, D. (INFN, Padua) ; Guidi, V. (INFN, Ferrara ; Ferrara U.) ; Mascagna, V. (Insubria U., Como ; INFN, Milan Bicocca) ; Mazzolari, A. (INFN, Ferrara) ; Prest, M. (Insubria U., Como ; INFN, Milan Bicocca) et al.
An investigation on stochastic deflection of high-energy charged particles in a bent crystal was carried out. [...]
arXiv:2011.13283.
- 25 p.
Fulltext

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2020-12-18
04:01
Recent highlights and plans of the AWAKE experiment / Della Porta, Giovanni Zevi (CERN)
The Advanced Wakefield Experiment (AWAKE) is an accelerator R&D experiment at CERN using, for the first time, a high-energy proton bunch to drive wakefields in plasma and accelerating electrons to the GeV energy scale. [...]
arXiv:2012.05033.
- 6 p.
Fulltext

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2020-12-17
06:00
A new beam synchronous processing architecture with a fixed frequency processing clock. Application to transient beam loading compensation in the CERN SPS machine / Galindo Guarch, F Javier (Barcelona, Polytechnic U. ; CERN) ; Baudrenghien, Philippe (CERN) ; Moreno Arostegui, J Manuel (Barcelona, Polytechnic U.)
New projects being implemented or planned at CERN, such as the LHC Injectors Upgrade (LIU), the High-Luminosity LHC (HL-LHC) or the Future Circular Collider (FCC), motivate the change of several architectural paradigms in the Low Level RF systems (LLRF). In the upgraded Super Proton Synchrotron (SPS) LLRF, the distribution of RF, the revolution frequency, settings and synchronization timings will rely on a deterministic link, the White Rabbit (WR), exploiting a distributed topology. [...]
2021 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 988 (2021) 164894 Fulltext: PDF;

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2020-12-17
06:00
Dynamic simulations of the HL-LHC cryogenic system during beam operation / Bradu, B (CERN)
This paper presents a set of dynamic simulations performed on the future High Luminosity Large Hadron Collider (HL-LHC) cryogenic system. The objectives of these simulations are to provide main pressure, temperature and flow transients over the cryogenic distribution system around the collision points 1 and 5 during the forecast beam operation. [...]
2021 - 12 p. - Published in : Cryogenics 113 (2021) 103214

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2020-12-16
06:02
Impact of neutrons on the RadFET dose response when exposed to mixed-fields / Marzo, M (CERN) ; Alia, R G (CERN) ; Infantino, A (CERN) ; Brucoli, M (CERN) ; Danzeca, S (CERN)
The Radiation MONitoring (RadMON) system is widely employed at CERN to measure the radiation levels in the accelerators, as well as the degradation of electronics located in the Large Hadron Collider (LHC) tunnel and shielded areas. Radiation Field Effect Transistors (RadFETs) integrated in the RadMON specifically measure the Total Ionizing Dose (TID) in the accelerators complex and are affected in turn by the CERN radiation field. The CERN High energy AcceleRator Mixed-field test facility (CHARM) has been built with the intention of reproducing different mixed-fields (atmospheric, space, accelerators, ground,…), to test electronics when exposed to specific radiation environments. [...]
2021 - 8 p. - Published in : Radiat. Phys. Chem. 179 (2021) 108062 Fulltext: PDF;

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2020-12-16
06:02
Sample-efficient reinforcement learning for CERN accelerator control / Kain, Verena (CERN) ; Hirlander, Simon (CERN) ; Goddard, Brennan (CERN) ; Velotti, Francesco Maria (CERN) ; Zevi Della Porta, Giovanni (CERN) ; Bruchon, Niky (CMFD, Trieste) ; Valentino, Gianluca (Malta U.)
Numerical optimization algorithms are already established tools to increase and stabilize the performance of particle accelerators. These algorithms have many advantages, are available out of the box, and can be adapted to a wide range of optimization problems in accelerator operation. [...]
2020 - 12 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 124801 Fulltext: PDF;

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2020-12-16
06:02
First exploitation results of recently developed SXR GEM-based diagnostics at the WEST project / WEST Collaboration
This contribution outlines the first preliminary acquisition data obtained by the GEM diagnostics on WEST. It was designed to monitor the radiation of impurities with a particular focus on the challenges of the elaborated plasma imaging technology in the area of SXR radiation. [...]
2020 - 8 p. - Published in : Nucl. Mater. Energy 25 (2020) 100850 Fulltext: PDF;

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