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AbstractAbstract
[en] Experimental tests of a open-quotes second bunch length compressorclose quotes in a linac is important for the next generation of linear colliders and for other future accelerators. These future accelerators need bunches with lengths of order 0.06-0.2 mm. At these lengths, new accelerator dynamics will be encountered. The authors have studied the possibility of constructing a second compressor with the present SLAC linac and have found a reasonable design. The core of this project is to reconfigure an old beamline (BL-90) at the 1000m location in the linac to: (1) extract a 10 GeV bunch, (2) pass it through a new 96m long transport line in which length compression is done, and (3) reinject the beam into the main linac in an available drift section. Using the resulting compressed bunch, accelerator physics tests would be performed in the remaining downstream linac with the resulting very high charge density. The bunch compression in this transport line results from the TRANSPORT element R56 as determined from the optics of the transport line. Δz = R56 ΔE/E. For example, if Δz = -0.5 mm, ΔE/E = 0.5%, R56 = -0.1 m, a bunch of 5 x 1010 particles would have a final length (σz) of about 0.08 mm with a peak current of 9600 A
Primary Subject
Source
Institute of Electrical and Electronics Engineers, Inc., New York, NY (United States); American Physical Society, Washington, DC (United States); 814 p; 1993; p. 638-640; PAC '93: international particle accelerator conference; Washington, DC (United States); 17-20 May 1993; Available from IEEE Service Center, 445 Hoes Lane, Piscataway, NJ 08854-4150
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AbstractAbstract
[en] This paper describes a beam pulsing system installed on a low energy beam line of the heavy ion accelerator GANIL. The unwanted beam bunches are vertically deflected by a rectangular pulse shaped electric field between two horizontal plates. As an example, this system can eliminate 9 of 10 bunches by pulsing a 2 kV voltage at a maximum repetition rate of 1.4 MHz. A full technical description of the device is given. (orig.)
[de]
Am Schwerionenbeschleuniger GANIL wurde ein Selektor installiert, mit dem sich einzelne Mikropulse aus dem Strahl entfernen lassen, bevor die Ionen auf hohe Energien beschleunigt werden. Dies geschieht durch Ablenkung der Mikropulse durch ein elektrisches Feld zwischen zwei horizontalen Platten, dessen Feldstaerke rechteckfoermig von der Zeit abhaengt. Zum Beispiel koennen 9 von 10 Mikropulsen durch eine gepulste Spannung von 2 kV mit einer maximalen Wiederholungsrate von 1,4 MHz eliminiert werden. Die Auslegung des Selektorsystems wird beschrieben. (orig.)Primary Subject
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Journal Article
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Teng, L.C.
Proceedings of the 1976 proton linear accelerator conference, September 14 to 17, 19761976
Proceedings of the 1976 proton linear accelerator conference, September 14 to 17, 19761976
AbstractAbstract
[en] A modified Beringer-Gluckstern buncher system for injection into a linac is described. Basically, the beam is cut into 360 deg sections and alternate sections are sent through two separate but identical buncher cavities operating at half the linac frequency. (E.C.B.)
Primary Subject
Source
Schriber, S.O. (ed.); Atomic Energy of Canada Ltd., Chalk River, Ontario. Chalk River Nuclear Labs; p. 213-216; Nov 1976; p. 213-216; 1976 proton linear accelerator conference; Chalk River, Canada; 14 - 17 Sep 1976
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Report
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AbstractAbstract
No abstract available
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6. international cyclotron conference; Vancouver, B. C., Canada; 18 Jul 1972; See CONF-720717--.
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Journal Article
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Conference
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AIP (Amer. Inst. Phys.) Conf. Proc; (no.9); p. 315-321
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AbstractAbstract
[en] Coherent Vavilov-Cherenkov radiation generated by a 6.1MeV bunched electron beam traveling in the vicinity of a solid dielectric target (PTFE and Paraffin) has been investigated experimentally. In addition, we have also demonstrated the simple scheme of the Cerenkov interferometer for non-invasive longitudinal electron bunch length diagnostics.
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Source
Channeling 2010: Charged and Neutral Particles Channeling Phenomena; Ferrara (Italy); Oct 2010
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Journal Article
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Nuovo Cimento. C (Print); ISSN 2037-4909;
; v. 34(4); p. 297-304

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AbstractAbstract
No abstract available
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5. particle accelerator conference; San Francisco, California, USA; 5 Mar 1973; See CONF-730310--.
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Journal Article
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IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci; v. NS-20(3); p. 919-922
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Tronc, Dominique.
Compagnie Generale de Radiologie MeV (CGR-MeV), 78 - Buc (France)1980
Compagnie Generale de Radiologie MeV (CGR-MeV), 78 - Buc (France)1980
AbstractAbstract
[en] This invention concerns a compact system of magnetic deflections making it possible to obtain a beam of pulsed accelerated electrons from electron bunches of high density. The system of magnetic deflections covered by this invention can supply bunches of high density by converting the changes in the movement quantity moments of the electrons emitted over time Δt of a pulse, into a variation of the length of the trajectories covered by these electrons (for example, in the case of an electron linear accelerator)
[fr]
La presente invention a pour objet un systeme compact de deviations magnetiques permettant d'obtenir, a partir d'un faisceau d'electrons acceleres pulse, des paquets d'electrons de haute densite. Le systeme de deviations magnetiques objet de la presente invention peut fournir des paquets d'electrons de haute densite par la conversion de la variation des moments de quantite de mouvement des electrons emis pendant le temps Δt d'une impulsion, en une variation de la longueur des trajectoires parcourues par ces electrons (par exemple dans le cas d'un accelerateur lineaire d'electrons)Original Title
Systeme magnetique de regroupement des particules chargees au sein d'un faisceau pulse
Primary Subject
Source
11 Jul 1980; 14 p; FR PATENT DOCUMENT 2444390/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
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Patent
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AbstractAbstract
No abstract available
Original Title
Patent
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Source
8 Jan 1974; 4 p; US PATENT DOCUMENT 3,784,873
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Patent
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Wilson, M.A.; Cutler, R.I.; Mohr, D.L.; Penner, S.; Young, L.M.
National Bureau of Standards, Washington, DC (USA); Los Alamos National Lab., NM (USA)1985
National Bureau of Standards, Washington, DC (USA); Los Alamos National Lab., NM (USA)1985
AbstractAbstract
[en] The purpose of the chopper/buncher system for the RTM injector is to chop a 100 keV 5 mA dc electron beam into 600-long pulses at 2380 MHz and then bunch these beam pulses to 100 at insertion into the 5 MeV injector linac. These beam manipulations must contribute a minimum increase in the phase space of the beam such that, at the entrance to the injector linac, the transverse emittance is less than 5π mm-mrad. Phase-shift measurements on the chopped beam indicate that the bunching fields are sufficient to achieve the required longitudinal compression. Beam envelope measurements, using wire scanners on the chopped and bunched beam, show that the emittance remains within design goals
Primary Subject
Source
1985; 4 p; Available from NTIS, PC A02/MF A01 as DE86002846
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AbstractAbstract
No abstract available
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Source
Porto, V. (ed.); Sao Paulo Univ. (Brazil). Inst. de Fisica; 89 p; 1985; p. 48-50; Published in summary form only.
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Miscellaneous
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