Progress of LHC low-/spl beta/ quadrupole magnets at KEK

Shintomi, T.; Ajima, Y.; Burkhardt, E.E.; Haruyama, T.; Higashi, N.; Iida, M.; Kimura, N.; Murai, S.; Nakamoto, T.; Ogitsu, T.; Ohhata, H.; Ohuchi, N.; Orikasa, A.; Osaki, O.; Ruber, Roger; Sugita, Kei; Tanaka, Kenichi; Terashima, A.; Tsuchiya, K.; Yamamoto, A.; Yokota, Hiroshi

doi:10.1109/77.920075

Cited by 24 publications

(9 citation statements)

References 6 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first generation of IR quadrupoles (IRQ) based on NbTi superconductor are being used in Tevatron [1] and in LHC [2], [3]. A design study of the second generation IR quadrupoles for the LHC luminosity upgrade has been started recently in the framework of U.S. LHC Accelerator Research Program (LARP) [4].…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of SC Quadrupoles in Accelerator Interaction Regions

Novitski

Zlobin

2007

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

Abstract-This paper presents results of a thermal analysis and operation margin calculation performed for NbTi and Nb 3 Sn low-beta quadrupoles in collider interaction regions. Results of the thermal analysis for NbTi quadrupoles are compared with the relevant experimental data. An approach to quench limit measurements for Nb A. Magnet Design and ANSYS Thermal ModelFor a consistent comparison of NbTi and Nb 3 Sn IR quadrupoles the thermal analysis was performed for magnets with equivalent design and performance parameters. These IR quadrupoles were developed as candidates for the LHC IRs. Quadrupole cross-sections are shown in Fig. 1. Both magnets use two-layer coils and were designed for a maximum field gradient of ~250 T/m. The details of magnet designs are reported in [6,7].3 Sn quadrupoles is discussed.Index Terms-Superconducting quadrupole, interaction region, operation margin, thermal analysis, temperature margin, quench limit.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of SC Quadrupoles in Accelerator Interaction Regions

Novitski

Zlobin

2007

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

show abstract

“…As seen from the interaction point (IP) the MQSXA assembly is located on the IP side of the high gradient quadrupole MQXA [1] of Q3, to correct for the field errors and the roll of the lowquadrupoles. The MQSX, the strongest element of the assembly, is designed to produce a gradient of 80 T/m at 550 A.…”

Section: A Magnetic Designmentioning

confidence: 99%

Inner triplet corrector package MQSXA for the LHC

Karppinen

Pérez

Senis

2002

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

show abstract

“…The main technological challenge of the LHC is the development and industrial production of 1232 superconducting main dipoles [7] operating at 8.3 T, 400 superconducting main quadrupoles [8] producing gradients of 223 T m -1 , and several thousand other superconducting magnets [9], for correcting multipole errors, steering and colliding [10] the beams, and increasing luminosity in collision [11,12]. All these magnets (TABLE 2), which must produce a controlled field with a precision of 10 -4 , are presently being series-produced by industry in Europe, India, Japan and the USA.…”

Section: High-field Superconducting Magnetsmentioning

confidence: 99%

Advanced superconducting technology for global science: The Large Hadron Collider at CERN

Lebrun

2002

AIP Conference Proceedings

View full text Add to dashboard Cite

The Large Hadron Collider (LHC), presently in construction at CERN, the European Organisation for Nuclear Research near Geneva (Switzerland), will be, upon its completion in 2005 and for the next twenty years, the most advanced research instrument of the world's high-energy physics community, providing access to the energy frontier above 1 TeV per elementary constituent. Re-using the 26.7-km circumference tunnel and infrastructure of the past LEP electron-positon collider, operated until 2000, the LHC will make use of advanced superconducting technology -high-field Nb-Ti superconducting magnets operated in superfluid helium and a cryogenic ultra-high vacuum system -to bring into collision intense beams of protons and ions at unprecedented values of center-of-mass energy and luminosity (14 TeV and 10 34 cm -2 .s -1 , respectively with protons). After some ten years of focussed R&D, the LHC components are presently series-built in industry and procured through world-wide collaboration. After briefly recalling the physics goals, performance challenges and design choices of the machine, we describe its major technical systems, with particular emphasis on relevant advances in the key technologies of superconductivity and cryogenics, and report on its construction progress. ABSTRACTThe Large Hadron Collider (LHC), presently in construction at CERN, the European Organisation for Nuclear Research near Geneva (Switzerland), will be, upon its completion in 2005 and for the next twenty years, the most advanced research instrument of the world's high-energy physics community, providing access to the energy frontier above 1 TeV per elementary constituent. Re-using the 26.7-km circumference tunnel and infrastructure of the past LEP electron-positon collider, operated until 2000, the LHC will make use of advanced superconducting technology -high-field Nb-Ti superconducting magnets operated in superfluid helium and a cryogenic ultra-high vacuum system -to bring into collision intense beams of protons and ions at unprecedented values of center-ofmass energy and luminosity (14 TeV and 10 34 cm -2 .s -1 , respectively with protons). After some ten years of focussed R&D, the LHC components are presently series-built in industry and procured through world-wide collaboration. After briefly recalling the physics goals, performance challenges and design choices of the machine, we describe its major technical systems, with particular emphasis on relevant advances in the key technologies of superconductivity and cryogenics, and report on its construction progress.

show abstract

Progress of LHC low-/spl beta/ quadrupole magnets at KEK

Cited by 24 publications

References 6 publications

Thermal Analysis of SC Quadrupoles in Accelerator Interaction Regions

Thermal Analysis of SC Quadrupoles in Accelerator Interaction Regions

Inner triplet corrector package MQSXA for the LHC

Advanced superconducting technology for global science: The Large Hadron Collider at CERN

Contact Info

Product

Resources

About