A5087095499- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Spacecraft and Cryogenic Technologies
- Particle accelerators and beam dynamics
- Quantum, superfluid, helium dynamics
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Physics of Superconductivity and Magnetism
- Heat Transfer and Boiling Studies
- Magnetic confinement fusion research
- Heat Transfer and Optimization
- Superconductivity in MgB2 and Alloys
- Nuclear Engineering Thermal-Hydraulics
- Distributed and Parallel Computing Systems
- Muon and positron interactions and applications
- Refrigeration and Air Conditioning Technologies
- Non-Destructive Testing Techniques
- Dark Matter and Cosmic Phenomena
- Radioactive contamination and transfer
- Graphite, nuclear technology, radiation studies
- Combustion and flame dynamics
- Magnetic and Electromagnetic Effects
- Magnetic Properties of Alloys
- Heat transfer and supercritical fluids
- Particle Dynamics in Fluid Flows
European Organization for Nuclear Research
2012-2024
Fermi National Accelerator Laboratory
2010-2017
Raja Ramanna Centre for Advanced Technology
2010
Rijksmuseum
1983
Leiden University
1983
The High Luminosity LHC (HL-LHC) project aims at accumulating 3000 <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${\rm fb}^{-1}$</tex></formula> in the years 2023–2035, i.e., ten times more w.r.t. nominal performance expected for 2010–2021. One key element to reach this challenging is a new insertion region reduce beam size interaction point by approximately factor two. This requires larger aperture...
In this paper, we outline the present status of design studies for high-luminosity Large Hadron Collider, focusing on choice aperture inner triplet quadrupoles. After reviewing some critical aspects such as energy deposition, shielding, heat load, and protection, main tentative parameters building a 150-mm-aperture Nb3Sn quadrupole, based experience gathered by LARP program in past several years.
We describe the magnet challenges for a Muon Collider, an exciting option considered future of particle physics at energy frontier. Starting from comprehensive work performed by US Accelerator Program, we have reviewed performance specifications dictated beam and operating conditions to satisfy accelerator needs. Among many magnets that make up muon collider, identified four systems represent well envelope challenges: target capture solenoid, final cooling dipoles collider dipoles. These...
The Next European Dipole (NED) Joint Research Activity was launched on 1 January 2004 to promote the development of high-performance Nb3Sn conductors in collaboration with industry (aiming at a non-copper critical current density 1500 A mm−2 4.2 K and 15 T) assess suitability technology next generation accelerator magnets an aperture 88 mm conductor peak field ∼15 T). It is part Coordinated Accelerator Europe (CARE) project, which involves eight collaborators, half-funded by Union. After...
Undesired quenches of superconducting magnets can be a limiting factor for the operation Large Hadron Collider (LHC) accelerator, both its forthcoming exploitation at full energy as well future upgrades. An accurate knowledge quench limit, maximum amount heat deposit withstand, is required to able prevent beam induced quenches. In this paper we provide an overview extraction through multitude cable insulation schemes used in particle accelerators past 20 years and foreseen coming years....
By the end of October 2022, US HL-LHC Accelerator Upgrade Project (AUP) had completed fabrication ten MQXFA magnets and tested eight them. The are low beta quadrupole to be used in Q1 Q3 Inner Triplet elements High Luminosity LHC. This AUP effort is shared by BNL, Fermilab, LBNL, with strand verification tests at NHMFL. An important step QA plan testing a vertical cryostat BNL. acceptance criteria that could BNL were all met first four production (MQXFA03-MQXFA06). Subsequently, two (MQXFA07...
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN foresees installation Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn-based quadrupole magnets selected interaction points accelerator. precise knowledge each magnet's thermal characteristics and heat extraction performance in response to power depositions during both nominal ultimate conditions is essential determining safe operating margins. A 2D numerical...
We investigate numerically, for the first time, thermal counterflow of superfluid helium past a cylinder by solving with finite volume method complete so-called two-fluid model. In agreement existing experimental results, we obtain symmetrical eddies both up- and downstream obstacle. The generation these is complex transient phenomenon that involves friction normal fluid component solid walls mutual between components. Implications flow in more realistic porous medium are also investigated.
A total of 44 CERN designed cryogenic electrical feedboxes are needed to power the LHC superconducting magnets. The include more than 1000 circuits fed by high temperature superconductor and conventional current leads ranging from 120 13 kA. In addition providing circuits, they also ensure specific mechanical functions for LHC. paper focuses on main design aspects related production operations gives an overview technologies employed. Results commissioning first sectors presented.
The High Luminosity LHC (HL-LHC) is a project to upgrade the collider after 2020-2025 increase integrated luminosity by about one order of magnitude and extend physics production until 2035. An focusing triplets insertion system for ATLAS CMS experiments foreseen using superconducting magnets operating in pressurised superfluid helium bath at 1.9 K. This will require design construction four continuous cryostats, each sixty meters length meter diameter, final beam quadrupoles, corrector...