A5087532693- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Spacecraft and Cryogenic Technologies
- Distributed and Parallel Computing Systems
- Physics of Superconductivity and Magnetism
- Particle physics theoretical and experimental studies
- Advanced Thermodynamic Systems and Engines
- Heat Transfer and Optimization
- Muon and positron interactions and applications
- Graphite, nuclear technology, radiation studies
- Fusion materials and technologies
- Advanced Sensor Technologies Research
- Geothermal Energy Systems and Applications
- Atomic and Subatomic Physics Research
- Nuclear reactor physics and engineering
- Superconducting and THz Device Technology
- Library Science and Information Systems
- Flow Measurement and Analysis
- Quantum, superfluid, helium dynamics
- Scientific Measurement and Uncertainty Evaluation
- Heat Transfer and Numerical Methods
- Magnetic confinement fusion research
Fermi National Accelerator Laboratory
2009-2024
European Organization for Nuclear Research
2007-2010
SLAC National Accelerator Laboratory
2001-2004
Fermi Research Alliance
2002
Lawrence Berkeley National Laboratory
2001
Brookhaven National Laboratory
2001
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN will include eight cryo-assemblies that are expected to be fabricated and delivered by US HL-LHC Accelerator Upgrade Project (AUP) as part U.S. contributions HL-LHC. These cryostat assemblies quadrupole magnetic components Q1 Q3 inner triplet optical elements in front two interaction points. Each cryo-assembly consists 4.2 m long Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
New high field and large-aperture quadrupole magnets for the low-beta inner triplets (Q1, Q2, Q3) have been built tested as part of high-luminosity upgrade Large Hadron Collider (HL-LHC). These new are based on Nb3Sn superconducting technology. The US Accelerator Upgrade Project (US-AUP) is producing Q1 Q3 Cryo-Assemblies: a pair ∼ 5 m long magnet structures installed in stainless-steel helium vessel (Cold Mass) surrounded by cryostat shields, piping, vacuum vessel. This paper gives an...
For the HiLumi LHC Upgrade (HL-LHC), new high field and large-aperture quadrupole magnets for low-beta inner triplets (Q1, Q2, Q3) are being built. These based on Nb3Sn superconducting technology. As part of US-HiLumi Accelerator Project (AUP), ten Cryostat Assemblies (LQXFA) Q1 Q3 replacement will be built, tested, delivered to CERN. The first LQXFA was assembled tested at Fermi National Laboratory (FNAL) during fall 2022 spring/summer 2023, respectively. This paper summarizes assembly...
This paper presents a technique for developing models that can accurately replicate equipment performance of heat exchangers and coils. The employs mechanistic relations with unspecified parameters as the basis model relations. Catalog information is then used to estimate best value parameters. Only few geometric specifications are required only small number need be fit. robust replicates catalog over entire operating range. Major advantages use allows extension different transfer fluids,...
Fermilab, in collaboration with LBNL and BNL, is developing a quadrupole for installation the interaction region inner triplets of LHC. This magnet required to have an operating gradient 215 T/m across 70 mm coil bore, operates superfluid helium at 1.9 K. A 2 m program addressing mechanical, magnetic, quench protection, thermal issues associated design was completed earlier this year, production first full length, cryostatted prototype underway. paper summarizes conclusions program, status...
Cryo-assemblies with the Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn MQXFA low-beta quadrupoles for High Luminosity LHC (HL-LHC) upgrade will be tested at Fermilab's magnet test facility. A total of 10 cryo-assemblies delivered to CERN within US HL-LHC Accelerator Upgrade Project (AUP). The horizontal stand Fermilab already has been used testing existing inner-triplet quadrupoles, but and corresponding electrical cryogenic...
A new test stand for testing large superconducting solenoid magnets at the Fermilab Central Helium Liquefier (CHL) has been designed, installed, and operated. This is being used to a coupling coil Muon Ionization Cooling Experiment (MICE), future uses include solenoids μ2e experiment. paper describes design operation including controlled cool-down warm-up. Overviews of process controls system quench management are also included.
Superconducting quadrupole magnets for the interaction regions of Large Hadron Collider are being developed by US-LHC Accelerator Project. These 70 mm bore intended to operate in superfluid helium at 1.9 K with a nominal field gradient 215 T/m. A series 2 m model has been built and cold tested Fermilab optimize their design construction study performance magnets. Field measurements 8 comparisons required quality reported this paper.
The LHC performance depends critically on the low- beta triplets, located either side of four interaction points. Each triplet consists superconducting quadrupole magnets, which must operate reliably at up to 215 T/m, sustain extremely high heat loads and have an excellent field quality. A collaboration CERN, Fermilab KEK was formed in 1996 design build systems, after nine years joint effort production will be completed early 2006. We retrace main events project present features quadrupoles,...
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 cryogenic system [1] for the Large Hadron Collider accelerator is presently in its final phase of commissioning at nominal operating conditions. refrigeration capacity LHC produced using eight large plants and 1.8 K units installed on five islands. Machine equipment a 26.7-km circumference ring deep underground tunnel are maintained their conditions via distribution consisting transfer lines, cold interconnection boxes each island line.
Superconducting quadrupole magnets for the interaction regions of Large Hadron Collider are being developed by US-LHC Accelerator Project. These 70 mm bore intended to operate in superfluid helium at 1.9 K with a nominal field gradient 215 T/m. A series 2 m model built and tested Fermilab optimize design construction parameters. Measurements quality date comparisons required reported this paper.
The US-LHC Accelerator Project is responsible for the production of Q2 optical elements final focus triplets in LHC interaction regions. As part this program Fermilab process manufacturing and testing cryostat assemblies (LQXB) containing two identical quadrupoles (MQXB) with a dipole corrector between them. 5.5 m long designed MQXB have 70 mm aperture operate superfluid helium at 1.9 K peak field gradient 215 T/m. This paper summarizes test results several emphasis on quench performance...
As part of the US-LHC Accelerator Project, Fermilab is producing fully cryostated assemblies that will be installed as Q1, Q2 and Q3 optical elements for LHC Inner Triplets. The main quadrupole magnets in Q1 (LQXA) (LQXC) are MQXA designed fabricated by KEK Toshiba, while those (LQXB) MQXB quadrupoles Fermilab. cryostat all Fermilab, final assembly occurs at This paper describes production test results second LQXB assembly.
The LHC is an accelerator with unprecedented complexity where the energy stored in magnets and beams exceeds other accelerators by one-to-two orders of magnitude. To ensure a safe efficient machine start-up without being plagued technical problems, phase "hardware commissioning" was introduced: thorough commissioning systems beam. This activity started June 2005 individual systems, followed operating full sector, one eighth machine; expected to last until spring 2008 when beam will start....
The LHC machine, composed of eight sectors with superconducting magnets and accelerating cavities requires a complex cryogenic system providing high cooling capacities (18 kW equivalent at 4.5 K 2.4 1.8 per sector produced in large cold boxes distributed via 3.3-km transfer lines). After individual reception tests the subsystems (cryogen storages, refrigerators, lines distribution boxes) performed since 2000, commissioning first has been under way November 2006. brief introduction to its...
Large aperture superconducting solenoid magnets are needed for the production and capture of pions, which decay to create intense muon beams in future experiments search direct electron conversion. The COMET experiment Japan Mu2e U.S. jointly conducting research into design coils made from aluminum-stabilized NbTi superconductor that is cooled by conduction a supply liquid helium. A prototype coil 1.3-m inner diameter, having four layers eight turns each, has been wound with pure aluminum...
As part of the U.S. contribution to HL-LHC Accelerator Upgrade Project (AUP), Fermilab is designing and building cold masses suitable for use in LHC interaction regions. The mass provides a vacuum-tight helium enclosure magnets. Two magnets are aligned both axially cross section at based on survey warm magnetic measurements. Bus work instrumentation added. A welded stainless steel shell surrounds two magnets, structure prepared insertion into cryostat. This paper summarizes design including...
As a part of the USLHC program, Fermilab is building half inner triplet quadrupole magnets for LHC. Two identical quadrupoles (MQXB) with dipole corrector between them in single cryogenic unit (LQXB) comprise Q2 optical element final focus triplets interaction regions. The 5.5 m long MQXB have 70 mm aperture and operate superfluid helium at 1.9 K peak field gradient 215 T/m. Manufacturing 18 an advanced stage. A program magnetic quality measurements performed room temperature during magnet...
A compact R&D RF linac is being built at Fermilab to study several key technologies related accelerating high intensity beams. One of the goals reduction beam losses through use solenoid lenses in low energy front end linac. total 23 compact, field, superconducting solenoids have been procured by for first (room-temperature RF) section In this report we summarize quench and magnetic performance lenses.
Fermilab, as part of the US-LHC Accelerator Project, has designed and is producing superconducting low-beta quadrupole magnets for Large Hadron Collider (LHC). These 70 mm bore, 5.5 m long operate in superfluid helium at 1.9 K with a maximum operating gradient 214 T/m. Two quadrupoles, combined dipole orbit corrector, form single LQXB cryogenic assembly, Q2 optical element final focus triplets LHC interaction regions. Field quality was measured room temperature during fabrication cold masses...