The LEP2 superconducting RF system

Butterworth, A.; Brown, P.; Brunner, O.; Ciapala, E.; Frischholz, H.; Geschonke, G.; Peschardt, E.; Sladen, Jonathan P H

doi:10.1016/j.nima.2007.12.038

Cited by 20 publications

(7 citation statements)

References 16 publications

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“…By the year 2000, more than 700 m of superconducting cavities had been installed worldwide and had successfully operated at accelerating fields up to 7.5 MV m −1 for a total of more than 2.5 GV for various high-β accelerators. The two largest installations were those for LEP-2 at CERN (115) and for CEBAF at Jefferson Lab (116). The former had 288 niobium-on-copper 325-MHz cavities, and the second had 350 niobium 1,500-MHz cavities.…”

Section: Applications: Past Present and Futurementioning

confidence: 99%

Superconducting Radio-Frequency Cavities

Padamsee

2014

Annu. Rev. Nucl. Part. Sci.

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Superconducting cavities have been operating routinely in a variety of accelerators with a range of demanding applications. With the success of completed projects, niobium cavities have become an enabling technology, offering upgrade paths for existing facilities and pushing frontier accelerators for nuclear physics, high-energy physics, materials science, and the life sciences. With continued progress in basic understanding of radio-frequency superconductivity, the performance of cavities has steadily improved to approach theoretical capabilities.

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Section: Applications: Past Present and Futurementioning

confidence: 99%

Superconducting Radio-Frequency Cavities

Padamsee

2014

Annu. Rev. Nucl. Part. Sci.

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“…Example parameters of LEP3 operating in Higgs factory mode and TLEP (in an 80 km tunnel) operating above the ttbar threshold and at the Z peak compared with LEP[28] [31] and the LHeC ring design[18].…”

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confidence: 99%

LEP3: A High Luminosity $e^+e^-$ Collider to Study the Higgs Boson

Blondel

Koratzinos²,

Assmann

et al. 2012

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A strong candidate for the Standard Model Scalar boson, H(126), has been discovered by the Large Hadron Collider (LHC) experiments. In order to study this fundamental particle with unprecedented precision, and to perform precision tests of the closure of the Standard Model, we investigate the possibilities offered by an e + e − storage ring collider. We use a design inspired by the B-factories, taking into account the performance achieved at LEP2, and imposing a synchrotron radiation power limit of 100 MW. At the most relevant centre-of-mass energy of 240 GeV, near-constant luminosities of 10 34 cm -2 s -1 are possible in up to four collision points for a ring of 27km circumference. The achievable luminosity increases with the bending radius, and for 80km circumference, a luminosity of 5 10 34 cm -2 s -1 in four collision points appears feasible. Beamstrahlung becomes relevant at these high luminosities, leading to a design requirement of large momentum acceptance both in the accelerating system and in the optics. The larger machine could reach the top quark threshold, would yield luminosities per interaction point of 10 36 cm -2 s -1 at the Z pole (91 GeV) and 2 10 35 cm -2 s -1 at the W pair production threshold (80 GeV per beam). The energy spread is reduced in the larger ring with respect to what is was at LEP, giving confidence that beam polarization for energy calibration purposes should be available up to the W pair threshold. The capabilities in term of physics performance are outlined.

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“…A total of 288 cavities were produced by three European manufacturers to whom the CERN know-how had been transferred. Finally, these cavities reached very reliably an average accelerating field of 7.5 MV/m, and the LEP energy was gradually increased up to the maximum achieved value of 104.5 GeV [37].…”

Section: Rf Behaviour Of Superconductors Box 74mentioning

confidence: 94%