Willi Kalbreier
CERN
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Featured researches published by Willi Kalbreier.
IEEE Transactions on Nuclear Science | 1977
Willi Kalbreier; A. Knezovic; G. Lohr; Willem Cornelis Middelkoop; P. Sievers; A. Warman
The design of the absorber blocks for internal and external dumping of the SPS proton beam is discussed. In addition, the external target stations for slow and fast extracted proton beams are described.
IEEE Transactions on Electrical Insulation | 1983
R. Bonvin; R. Dubois; N. Garrel; R. Guinand; Willi Kalbreier; Karl Heinz Kissler
Electrostatic deflectors are used in the CERN SPS Collider to separate the orbits of protons and antiprotons. The total installation comprises 4 tanks, 3 m long each, with a vacuum of 10-8 Pa after baking. The operating electric field is 50 kV/cm across a gap of 4 cm, between 3 m long titanium electrodes; the spark rate does not exceed 2 per 24 hours. The construction, the HV circuit, and the performances of the separators are described in this paper.
Archive | 2006
P Bourquin; Jean Paul Burnet; C Rossi; T Zickler; M. Martini; G Villiger; S.S.Gilardoni; T. Fowler; Willi Kalbreier; T. Kroyer; J P Royer; O E Berrig; T Dobers; R. Steerenberg; K. Metzmacher; M Hourican; A Beuret; M.J. Barnes; Luc Sermeus; Friedhelm Caspers; Jean-Marc Cravero; Mertens; R Brown; F Di Maio; Jan Borburgh; E. Métral
The PS Multi-Turn Extraction Study Group M. J. Barnes*, O. E. Berrig, A. Beuret, J. Borburgh, P. Bourquin, R. Brown, J.-P. Burnet, F. Caspers, J.-M. Cravero, T. Dobers, T. Fowler, S. Gilardoni, M. Giovannozzi (Study Group Leader), M. Hourican, W. Kalbreier, T. Kroyer, F. di Maio, M. Martini, V. Mertens, E. Métral, K.-D. Metzmacher, C. Rossi, J.-P. Royer, L. Sermeus, R. Steerenberg, G. Villiger, T. Zickler
ieee particle accelerator conference | 1989
J. H. Dieperink; A. Finnigan; Willi Kalbreier; Reinder L Keizer; M Laffin; V. Mertens
Electrostatic separators are used to separate the beams in the LEP (Large Electron Positron collider). The counter-rotating beams are eventually brought into collision in the four low beta insertions, using switches to discharge simultaneously four high-voltage (HV) circuits. Each switch consists of four spark gaps mounted in a pressure vessel. A reduction of the gap widths below the self-ignition distance by electric motors results in the initiation of the discharges. Synchronization is ensured by the electrical coupling of the electrodes connected to ground. The design and performance of the computerized precision control of the discharge switch are described. The dynamic characteristics of the prototype switch are also presented. It is concluded that, with computerized precision control of the electrode motions of an HV discharge switch, it is possible to obtain better time accuracy than would have been the case with conventional analog servo feedback systems. In fact, the accuracy can be a fraction of the system time constant and allow large tolerances on the system parameters.<<ETX>>
IEEE Transactions on Electrical Insulation | 1993
Willi Kalbreier; B. Goddard
Archive | 1994
Claude Bovet; O C Brunner; T Camporesi; C. Fischer; Gunther Geschonke; B. Goddard; Oswald Grobner; Werner Herr; Georg Von Holtey; Willi Kalbreier; Eberhard Keil; M. Lamont; R J Lauckner; Malika Meddahi; S Myers; E. Peschardt; Massimo Placidi; John Poole; G. H. Schroder; T M Taylor; A. Verdier; Chang-qiao Zhang; Bruno W Zotter
Archive | 2004
O E Berrig; Jan Borburgh; Jean Paul Burnet; R. Cappi; M. Giovannozzi; Willi Kalbreier; M. Martini; A S Muller; Elias Métral; K. D. Metzmacher; J P Riunaud; Akira Sakumi; P. Scaramuzzi; Luc Sermeus; R. Steerenberg; Todd E. Zickler
Archive | 1990
John M. Jowett; Willi Kalbreier; S Myers
Archive | 1988
Willi Kalbreier; Karl Heinz Kissler; N Garrel; R Guinand; Reinder L Keizer
Archive | 1974
Willi Kalbreier; Willem Cornelis Middelkoop; P Sievers