CERN Accelerating science

ATS Reports

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2025-01-14
11:18
Long-range beam-beam mitigation for round optics / Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (CERN)
When colliding high intensity bunch trains at low beta*, a sufficiently large crossing angle needs to be imposed at the interaction point (IP) in order to separate the two beams before and after the collision, and mitigate the so-called long-range beam-beam (BBLR) effect, which otherwise can be very detrimental to the beam lifetime. [...]
CERN-ACC-2023-0005.
- 2023 - 22.

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2024-11-12
12:46
Performance Optimization of the CLIC Positron Source / Zhao, Yongke (CERN) ; Doebert, Steffen (CERN) ; Latina, Andrea (CERN)
The baseline configuration of the CLIC positron source is optimized at different center-of-mass energy stages of the collider for different acceleration modes. [...]
CERN-ACC-2024-0005 ; CLIC-Note-1200.
- 2024 - 12.
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2024-10-14
11:50
Optimization of the CLIC RTML at 380 GeV / Zhao, Yongke (CERN) ; Latina, Andrea (CERN)
The baseline configuration of the Compact Linear Collider’s Rings-to-Main-Linac section has been optimized for the 380 GeV center-of-mass energy stage, and some outstanding issues in previous designs have been resolved [...]
CERN-ACC-2024-0004 ; CLIC-Note-1199.
- 2024 - 7.
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2024-10-09
16:46
Design, fabrication and RF measurements of the storage and correction cavity prototypes of the RF pulse compression system for the klystron-based CLIC main linac / Wang, Ping ; Grudiev, Alexej (CERN) ; Riffaud, Benoit (CERN) ; Berthome, Emmanuel ; Motschmann, Fritz ; Syratchev, Igor (CERN) ; Scibor, Karol (CERN) ; Giordanino, Laurene ; Catalan Lasheras, Nuria (CERN) ; Morales Sanchez, Pedro (CERN)
An RF pulse compression system based on double-height waveguides was studied for the Klystron-based CLIC main linac. [...]
CERN-ACC-2024-0003 ; CLIC-Note-1198.
- 2024 - 17.
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2024-05-13
09:51
Special relativity, electromagnetism, classical and quantum mechanics: what to remember for particle accelerators / Metral, Elias (CERN)
The goal of these lectures (of 6 times 45 minutes), which have been prepared for the Riga Technical University Course "Accelerator Technologies” (https://indico.cern.ch/event/1381698/overview), is to provide the necessary background to understand in detail the accelerator physics and perform all the necessary computations [...]
CERN-ACC-SLIDES-2024-0001.
- 2024. - 471 p.
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2024-05-07
16:46
Single cylinder cavity based RF cavities for klystron-based Compact Linear Collider / Wang, Ping (CERN) ; Grudiev, Alexej (CERN)
The proposed pulse compression system for the klystron-based Compact Linear Collider (CLIC) is based on individual cavities. [...]
CERN-ACC-2024-0002 ; CLIC-Note-1197.
- 2024 - 13.
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2024-03-28
12:31
Design of the RF waveguide network for the klystron-based CLIC main linac RF Module / Wang, Ping (CERN) ; Capstick, Matthew John ; Catalan Lasheras, Nuria (CERN) ; Doebert, Steffen (CERN) ; Grudiev, Alexej (CERN) ; Rossi, Carlo (CERN) ; Morales Sanchez, Pedro (CERN) ; Syratchev, Igor (CERN) ; Wu, Xiaowei
The klystron-based Compact Linear Collider (CLIC) was initially proposed with a low center-of-mass energy of 380 GeV, primarily due to potential cost-effectiveness. [...]
CERN-ACC-2024-0001 ; CLIC-Note-1196.
- 2024 - 24.
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2023-11-29
17:20
LHC Triplet Task Force Report / Arduini, Gianluigi (CERN) ; Bradu, Benjamin (CERN) ; Brodzinski, Krzysztof (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Ciccotelli, Alessia (University of Manchester (GB)) ; Deferne, Guy (CERN) ; Fartoukh, Stephane (CERN) ; Fessia, Paolo (CERN) ; Garion, Cedric (CERN) et al.
The excellent performance of the Large Hadron Collider (LHC) and the extension of Run 3 by one year have led to a significant increase of the expected integrated luminosity by the end of its operation and before the start of the High Luminosity LHC (HL-LHC), exceeding the design LHC integrated luminosity of 300 fb−1 for which the final focus region has been designed. [...]
CERN-ACC-2023-0004.
- 2023. - 95 p.
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2023-11-16
16:44
MOSFET Selection for a 18ka modular power converter for HL-LHC inner triplet / Wassinger, Nicolas ; Maestri, Sebastian (National Scientific and Technical Research Council (AR)) ; Garcia Retegui, Rogelio (ICYTE, COCINET-UNMDP, Mar del Plata, Argentina) ; Funes, Miguel (ICYTE, COCINET-UNMDP, Mar del Plata, Argentina) ; Antoszczuk, Pablo Daniel (CERN) ; Pittet, Serge (CERN)
The upgrade of the Large Hadron Collider (LHC) at CERN towards the High Luminosity-LHC (HL-LHC) presents different challenges, among them, the upgrade of the power converters associated to the inner triplet magnets to reach the required rated current of 18kA. In order to reach this current and to accomplish the stringent requirements associated to this kind of application, even under a fault scenario, redundancy and modularity are foreseen in the converter design. [...]
CERN-ACC-2023-0003.- Geneva : CERN, 2023 - 13 p. - Published in : Power Electronic Devices and Components (PEDC) 6 (2023) NONE Publication: PDF;

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2023-07-12
14:48
Alvarez drift tube linac for medical applications in the framework of HITRIplus project / Mamaras, Aristeidis (Aristotle U., Thessaloniki ; CERN) ; Samponidis, D (Aristotle U., Thessaloniki ; CERN) ; Bellan, L (INFN-LNL, Legnaro, Italy) ; Bisoffi, Giovanni (Universita e INFN, Legnaro (IT)) ; Comunian, M (INFN-LNL, Leganro, Italy) ; Thonet, Pierre Alexandre (CERN) ; Vretenar, Maurizio (CERN)
A first beam dynamics and RF design of an Alvarez-type drift tube linac (DTL) has been defined in the framework of the EU project, HITRIplus. It is meant primarily as a carbon (12C4+) and helium (4He2+) ion injector of a compact synchrotron for patient treatment. [...]
CERN-ACC-NOTE-2023-0008; NIMMS-Note-014.- Geneva : CERN, 2023 - 6 p. - Published in : JACoW IPAC2023 (2023) TUPA176 Fulltext: NIMMS_Note_014_Final - PDF; TUPA176 - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA176

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