Jonathan P H Sladen

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PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268) | 2001

Penelope Brown; O C Brunner; A. Butterworth; Edmond Ciapala; Hans Frischholz; Gunther Geschonke; E. Peschardt; Jonathan P H Sladen

The LEP Superconducting RF system reached its maximum configuration of 288 four-cell cavities powered by 36 klystrons in 1999. In 2000, this system, together with 56 cavities of the original copper RF system, routinely provided more than 3630 MV, allowing the beam energy to be raised up to 104.5 GeV. This not only required operating the cavities more than 15% above their design gradient, but has also demanded a very high operational reliability from the entire system. This paper will describe the operation of the LEP RF system during 2000, including new features, operational procedures and limitations.

IEEE Transactions on Nuclear Science | 1985

Penelope Brown; Edmond Ciapala; S. Hansen; E. Peschardt; Jonathan P H Sladen

A brief description of the low power and controls electronics for running the 128 cavity assemblies in the initial phase of LEP is given. Virtually identical hardware will be used for the future extension of LEP with superconducting niobium cavities. One complete RF unit consisting of 16 cavities and all associated drive and controls electronics has been successfully tested.1

Archive | 1994

Rudolf Bossart; Jonathan P H Sladen; J. H. B. Madsen; Walter Wuensch; S. Schreiber; J.C. Godot; Louis Rinolfi; H. Braun; J P Delahaye; Kryno K Geissler; G. Suberlucq; Ian H Wilson

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2008