A plasma lens for the CERN Antiproton Collector scaled from model and experiment

Autin, B.; Gundel, Hartmut; Riege, H.; Schnuriger, J C; Bauer, H.; Christiansen, J.; Frank, K.; Stetter, M.; Tkotz, R.; Boggasch, E.; Menna, L. De; Miano, G.; Dothan, F.

doi:10.1109/pac.1989.72988

Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology

DOI: 10.1109/pac.1989.72988

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A plasma lens for the CERN Antiproton Collector scaled from model and experiment

B. Autin

Hartmut Gundel

H. Riege

et al.

Abstract: The development work on plasma lens prototypes for antiproton collection is summarized. The antiproton yield with a plasma lens is estimated. Results of the latest z-pinch model describing the plasma dynamics in such a lens are presented. The scaling of the final plasma lens parameters is based on both model and measure ment. Destruction rates of insulator tube and electrodes have been measured. A final set of parameters is proposed.

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Applications of Microwaves to Antiproton Control

Autin¹,

Carron²,

Caspers³

et al. 1987

17th European Microwave Conference, 1987

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A major achievement in particle accelerator physics has been the invention of stochastic cooling, a method which increases the density of beams of rare particles, like antiprotons, by several orders of magnitude. The beam circulates in a storage ring where it is sampled by electromagnetic devices which detect and correct the statistical fluctuations in position and energy. The efficiency is related to the sampling resolution which is itself associated with the system frequency bandwidth, a few gigahertz in practice. The coupling structures are made of electrode arrays connected by combiner or splitter networks. The dynamic range may exceed 150 dB yet fulfilling stringent linear characteristics. At the detection stage, the thermal noise is reduced using cryo-electronic techniques. At the other end of the amplification chain, solid state amplifiers delivering up to 100 watts CW power have been preferred to travelling wave tubes for reasons of phase linearity, lifetime and economy. The performances and technological aspects of the microwave systems are discussed by the example of the CERN antiproton project, ACOL. Invited paper, 17th European Microwave ConferenceRome, Italy, 7th-10th September 1987Geneva, Switzerland July 1987 APPLICATIONS OF HICROWAVES TO ANTIPROTON CONTROLB. Autin, G. Carron, F. Caspers, L. Thorndahl* ABSTRACT A major achievement in particle accelerator physics has been the invention of stochastic cooling, a method which increases the density of beams of rare particles, like antiprotons, by several orders of magnitude. The beam circulates in a storage ring where it is sampled by electromagnetic devices which detect and correct the statistical fluctuations in position and energy. The efficiency is related to the sampling resolution which is itself associated with the system frequency bandwidth, a few gigahertz in practice. The coupling structures are made of electrode arrays connected by combiner or spli tter networks. The dynamic range may exceed 150 dB yet fulfilling stringent linear characteristics. At the detection stage, the thermal noise is reduced using cryo-electronic techniques. At the other end of the amplification chain, solid state amplifiers delivering up to 100 watts CW power have been preferred to travelling wave tubes for reasons of phase linearity, lifetime and economy. The performances and technological aspects of the microwave systems are discussed by the example of the CERN antiproton project, ACOL.

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Applications of Microwaves to Antiproton Control

Autin¹,

Carron²,

Caspers³

et al. 1987

17th European Microwave Conference, 1987

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A plasma lens for the CERN Antiproton Collector scaled from model and experiment

Cited by 1 publication

References 10 publications

Applications of Microwaves to Antiproton Control

Applications of Microwaves to Antiproton Control

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