CERN Accelerating science

CERN Document Server 13 εγγραφές βρέθηκαν  1 - 10επόμενο  μετάβαση στην εγγραφή: Η έρευνα πήρε 0.56 δευτερόλεπτα. 
1.
Increasing High Luminosity LHC Dynamic Aperture Using Optics Optimizations / De Maria, Riccardo (CERN) ; Angelis, Yannis (CERN ; Aristotle U., Thessaloniki) ; Droin, Colas (CERN) ; Kostoglou, Sofia (CERN) ; Plassard, Fabien (CERN) ; Sterbini, Guido (CERN) ; Tomás García, Rogelio (CERN)
CERN’s Large Hadron Collider (LHC) is expected to operate with unprecedented beam current and brightness from the beginning of Run 4 in 2029. In the context of the High Luminosity LHC project, the baseline operational scenarios are currently being developed. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 507-510 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.507-510
2.
Sextupole scheme optimization for HL–LHC / Plassard, Fabien ; De Maria, Riccardo (CERN) ; Giovannozzi, Massimo (CERN)
One essential upgrade of the High Luminosity LHC (HL–LHC) to reach the desired luminosity, is the large reduction of the β-function value at the interaction points (IP) hosting the high-luminosity experiments ATLAS and CMS. [...]
CERN-ACC-NOTE-2021-0012 ; CERN-ACC-2021-017.
- 2021.
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3.
High Luminosity LHC optics and layout HLLHCV1.4 / De Maria, Riccardo (CERN) ; Bruce, Roderik (CERN) ; Gamba, Davide (CERN) ; Giovannozzi, Massimo (CERN) ; Plassard, Fabien (CERN)
The goal of the High Luminosity Project is the upgrade of the LHC to deliver an integrated luminosity of at least 250 fb$^{-1}$ per year in each of the two high-luminosity, general-purpose detectors ATLAS and CMS. This article presents the latest layout design and the corresponding optics features, which comprise optimisation of the orbit corrector and crab cavity systems, and new estimates of the performance reach thanks to the new concept of fully remote alignment. [...]
CERN-ACC-2019-140.- 2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPMP019 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPMP019
4.
Optics optimization of longer L* Beam Delivery System designs for CLIC and tuning of the ATF2 final focus system at ultra-low β* using octupoles / Plassard, Fabien
The future machines considered to carry out high precision physics in the TeV energy regime are electron-positron (e+e−) linear colliders [...]
CERN-THESIS-2018-223 - https://tel.archives-ouvertes.fr/tel-01893067 : HAL, 2018-10-13. - 166 p.

Fulltext
5.
Quadrupole-free detector optics design for the Compact Linear Collider final focus system at 3 TeV / Plassard, Fabien (CERN) ; Latina, Andrea (CERN) ; Marin, Eduardo (CERN) ; Tomás, Rogelio (CERN) ; Bambade, Philip (Orsay, LAL)
Aiming to simplify the machine detector interface of the Compact Linear Collider (CLIC), a new detector model has been designed allowing the last quadrupole QD0 of the final focus system (FFS) to be located outside of the experiment with a distance L* from the interaction point of 6 m. In this paper, the beam delivery system (BDS) has been reoptimized, offering a luminosity performance that exceeds the design requirements by 11% for the total luminosity and by 7% in the energy peak. [...]
2018 - 13 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 011002 Fulltext: PDF;
6.
Tuning Simulations for the CLIC Traditional Beam Delivery System / Bodenstein, Ryan (JAI, UK) ; Burrows, Philip (JAI, UK) ; Marín, Eduardo (CERN) ; Plassard, Fabien (CERN) ; Tomás, Rogelio (CERN)
As the design of the CLIC Beam Delivery System (BDS) evolves, tuning simulations must be performed on each of the proposed lattice designs to see which system achieves the highest luminosity in the most realistic manner. This work will focus on the tuning simulations performed on the so-called Traditional lattice design for the center-of-mass energy of 3 TeV. [...]
CERN-ACC-2017-131; CLIC-Note-1118.- 2017 - 3 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK108 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPIK108
7.
Beam Delivery System Optimization for CLIC 380 GeV / Plassard, Fabien (CERN) ; Bambade, Philip (Orsay, LAL) ; Latina, Andrea (CERN) ; Marín, Eduardo (CERN) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN)
In the framework of the CLIC rebaselining, the Beam Delivery System (BDS) have been re-optimized for its initial stage at 380 GeV. Two BDS designs with L*=4.3 meters and L*=6 meters have been investigated. [...]
CERN-ACC-2017-132; CLIC-Note-1117.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK100 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPIK100
8.
Tuning-Based Design Optimization of CLIC Final Focus System at 3 TeV / Plassard, Fabien (CERN) ; Bambade, Philip (Orsay, LAL) ; Latina, Andrea (CERN) ; Marín, Eduardo (CERN) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN)
The tuning aims to mitigate static imperfections of the Final Focus System (FFS) for emittance preservation at the Interaction Point (IP). A simulation campaign on the nominal CLIC FFS at 3 TeV have shown the need of rethink the design in order to ease the tuning of the machine. [...]
CERN-ACC-2017-133; CLIC-Note-1108.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK099 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPIK099
9.
CLIC Tuning Performance Under Realistic Error Conditions / Marín, Eduardo (CERN) ; Latina, Andrea (CERN) ; Plassard, Fabien (CERN) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN)
In this paper we present the latest results regarding the tuning study of the baseline design of the CLIC Final Focus System. In previous studies, 90% of the machines reach 90% of the nominal luminosity, when considering beam position monitor errors and transverse misalignments of magnets for a single beam case. [...]
CERN-ACC-2017-162; CLIC-Note-1119.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-TUPVA130 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA130
10.
CLIC Beam Delivery System Rebaselining and Long L* Lattice Optimization / Plassard, Fabien (CERN) ; Bambade, Philip (Orsay, LAL) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN)
This paper summarizes the re-optimization study made on the CLIC Beam Delivery System (BDS) in the framework of the rebaselining for beam collisions at 380 GeV for the initial energy stage. It describes the optimization process applied for the beam parameters as well as for the Final Focus system (FFS) lattice design with respect to the energy upgrade transition to 3 TeV. [...]
CERN-ACC-2016-172.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPMR045 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPMR045

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