Retraining of the 1232 Main Dipole Magnets in the LHC

Verweij, Arjan; Auchmann, Bernhard; Bednarek, Mateusz; Bottura, L.; Charifoulline, Zinour; Fehér, S.; Hagen, P.; Modena, M.; Naour, S. Le; Romera, Iván; Siemko, A.; Steckert, Jens; Tock, Jean-Philippe; Todesco, E.; Willering, Gerard; Wollmann, Daniel

doi:10.1109/tasc.2016.2514598

Cited by 8 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that the number of training quenches varies strongly among the 8 sectors and that S56 was already trained to 11 173 A in 2008, requiring 29 quenches. [116,117]. In December 2016, sectors 34 and 45 have been pushed to higher currents to assess the number of required quenches for operation at higher energy.…”

Section: Results Of the Magnet Training Campaignmentioning

confidence: 99%

LHC Upgrades in preparation of Run 3

Arduini,

Baglin,

Bartosik

et al. 2024

J. Inst.

View full text Add to dashboard Cite

The Large Hadron Collider (LHC) Long Shutdown 2 (2019–2021), following LHC Run 2, was primarily dedicated to the upgrade of the LHC Injectors but it included also a signiﬁcant amount of activities aimed at consolidation of the LHC machine components, removal of known limitations and initial upgrades in view of the High-Luminosity LHC (HL-LHC) to favour the intensity ramp-up during Run 3 (2022–2025). An overview of the major modifications to the accelerator and its systems is followed by a summary of the results of the superconducting magnet training campaign to increase the LHC operation energy beyond the maximum value of 6.5 TeV reached during Run 2. The LHC configuration and the scenarios for proton and ion operation for Run 3 are presented considering the expected performance of the upgraded LHC Injectors and the proton beam intensity limitations resulting from the heat load on the cryogenic system due to beam-induced electron cloud and impedance.

show abstract

Section: Results Of the Magnet Training Campaignmentioning

confidence: 99%

LHC Upgrades in preparation of Run 3

Arduini,

Baglin,

Bartosik

et al. 2024

J. Inst.

View full text Add to dashboard Cite

show abstract

“…The S4 coil initially quenched below its required 2.8 A operating current and must be trained up to its operating range 51 . This behavior is believed to be due to a mechanical defect (running in microcracks in the coil potting) in the specific coil, which will be replaced in subsequent work.…”

Section: F Quenchesmentioning

confidence: 99%

Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver

Switzer

Ade

Baildon

et al. 2019

Review of Scientific Instruments

View full text Add to dashboard Cite

The Primordial Inflation Polarization Explorer (PIPER) is a balloon-borne telescope mission to search for inflationary gravitational waves from the early universe. PIPER employs two 32 × 40 arrays of superconducting transition-edge sensors, which operate at 100 mK. An open bucket dewar of liquid helium maintains the receiver and telescope optics at 1.7 K. We describe the thermal design of the receiver and sub-kelvin cooling with a continuous adiabatic demagnetization refrigerator (CADR). The CADR operates between 70 − 130 mK and provides ≈10 µW cooling power at 100 mK, nearly five times the loading of the two detector assemblies. We describe electronics and software to robustly control the CADR, overall CADR performance in flight-like integrated receiver testing, and practical considerations for implementation in the balloon float environment.

show abstract

“…At this time, the energy of the machine is limited to 6.5 TeV, just below nominal, due to the necessity of retraining the dipoles after warm-up. More details can be found in [18].…”

Section: Lhcmentioning

confidence: 99%

Superconducting accelerator magnet technology in the 21st century: A new paradigm on the horizon?

Gourlay

2018

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

Superconducting magnets for accelerators were first suggested in the mid-60's and have since become one of the major components of modern particle colliders. Technological progress has been slow but steady for the last half-century, based primarily on Nb-Ti superconductor. That technology has reached its peak with the Large Hadron Collider (LHC). Despite the superior electromagnetic properties of Nb 3 Sn and adoption by early magnet pioneers, it is just now coming into use in accelerators though it has not yet reliably achieved fields close to the theoretical limit. The discovery of the High Temperature Superconductors (HTS) in the late '80's created tremendous excitement, but these materials, with tantalizing performance at high fields and temperatures, have not yet been successfully developed into accelerator magnet configurations. Thanks to relatively recent developments in both Bi-2212 and REBCO, and a more focused international effort on magnet development, the situation has changed dramatically. Early optimism has been replaced with a reality that could create a new paradigm in superconducting magnet technology. Using selected examples of magnet technology from the previous century to define the context, this paper will describe the possible innovations using HTS materials as the basis for a new paradigm.

show abstract

Retraining of the 1232 Main Dipole Magnets in the LHC

Abstract: Abstract-

Cited by 8 publications

References 10 publications

LHC Upgrades in preparation of Run 3

LHC Upgrades in preparation of Run 3

Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver

Superconducting accelerator magnet technology in the 21st century: A new paradigm on the horizon?

Contact Info

Product

Resources

About