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Magnetic Analysis of the MQXF Quadrupole for the High-Luminosity LHC
- Source :
- IEEE Transactions on Applied Superconductivity, vol 29, iss 5
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- The high-luminosity upgrade of the large hadron collider (HL-LHC) requires new high-field and large-aperture quadrupole magnets for the low-beta inner triplets (MQXF). The US Hilumi-LHC Accelerator Upgrade (HL-LHC AUP) and CERN are jointly developing a 150 mm aperture Nb3Sn magnet. Due to the large beam size and orbit displacement in the final focusing triplet, MQXF has challenging field quality targets at collision energy. Magnetic measurements have been performed both at ambient and cryogenic temperatures in the four short models built and tested. This paper presents the magnetic analysis, comparing field measurements with the expectations and the field quality requirements. The analysis is focused on the geometrical harmonics and iron saturation effect, including three dimensional effects and transfer function repeatability. Persistent currents and dynamic effects are also discussed. The high-luminosity upgrade of the Large Hadron Collider (HL-LHC) requires new high-field and large-aperture quadrupole magnets for the low-beta inner triplets (MQXF). The U.S. HiLumi-LHC Accelerator Upgrade and CERN are jointly developing a 150-mm aperture Nb3Sn magnet. Due to the large beam size and orbit displacement in the final focusing triplet, MQXF has challenging field quality targets at collision energy. Magnetic measurements have been performed both at ambient and cryogenic temperatures in the four short models that were built and tested. This paper presents the magnetic analysis, comparing field measurements with the expectations and the field quality requirements. The analysis is focused on the geometrical harmonics and iron saturation effect, including three-dimensional effects and transfer function repeatability. Persistent currents and dynamic effects are also discussed.
- Subjects :
- Physics
General Physics
Large Hadron Collider
Luminosity (scattering theory)
Field (physics)
Physics::Instrumentation and Detectors
field quality
Materials Engineering
Superconducting magnet
Condensed Matter Physics
Accelerators and Storage Rings
01 natural sciences
Electronic, Optical and Magnetic Materials
Nuclear physics
magnetic measurements
Harmonics
Magnet
0103 physical sciences
Quadrupole
Physics::Accelerator Physics
High luminosity LHC
Electrical and Electronic Engineering
010306 general physics
Quadrupole magnet
high field Nb3Sn magnet
Subjects
Details
- ISSN :
- 23787074 and 10518223
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Applied Superconductivity
- Accession number :
- edsair.doi.dedup.....972fc1f32a2573f2411b56565ff66d07