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P.73. A.V.Akimov, P.A.Bak, I.V.Kazarezov, A.A.Korepanov (Budker Institute of Nuclear Physics, Novosibirsk, Russia)

The modulator for the 10 MeV 2 kA inductive accelerator pulse power supply

For the 10 MeV 2 kA electron inductive accelerator pulse power supply the modulator prototype operating in two-pulse regime has been developed. The modulator is used for the resistively-inductive load supplying with the pulse voltage 20 kV, current up to 10 kA, 300 ns pulse duration. The data obtained at the nominal modulator operation regime are presented. The basic technical developments of the modulator parts and the modulator de- sign are described.

Alexander Valentinovich Akimov: a.v.akimov@inp.nsk.su

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    74. N.A.Vinokurov, G.Ya.Kurkin, L.E.Medvedev, L.A.Mironenko., A.D.Oreshkov,

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      V.Salikova, M.A.Scheglov (Budker Institute of Nuclear Physics, Novosibirsk, Russia) Vacuum system of FEL

In this article is described the vacuum system of the powerful terahertz free electron laser constructed in the Siberian Center for Photochemical Research. Vacuum system of FEL contains the new technological decisions: standby blocks - power supply of pumps; hard- ware and software intended for the vacuum's monitoring and ensuring the protection of some technological units of FEL in case of vacuum's downturn

Dr. Tatiana Vladimirovna Salikova: salikova@inp.nsk.su

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    75. H.Leibrock, G.Moritz (GSI, Darmstadt Germany); Q.Wang (IEE, Beijing, China);

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      Yuan, Ma Lizhen (IMP, Lanzhou, China); S.T.Wu (ASIPP, Hefei, China); J.Lucas (ELYTT Energy, Spain)

Superferric Magnets for Super-FRS and Storage Rings of FAIR

The Super Fragment Separator (Super-FRS) is conceived as a large acceptance fragment separator, with three branches serving different experimental areas, including a new stor- age ring complex. Rare isotopes of all elements up to uranium can be spatially separated by the Super-FRS. Unique studies with these isotopes and antiprotons will be performed in the Ring Branch, consisting mainly of a Collector Ring (CR), the New Experimental Storage Ring (NESR), and the Recycled Experimental Storage Ring (RESR). A common requirement for the magnets of these systems is a large acceptance at moderate fields, which can be fulfilled by superferric magnets with wide apertures. Similar requirements for the Super-FRS and CR magnets allow using the same magnet designs for both sys- tems, yielding a reduction of costs and development time. Rare ions and anti-protons will be decelerated in the NESR and RESR, thus requiring pulsed magnets. This requires a coil design different from CR and Super-FRS. The cryostat design has to prevent large eddy current losses. This paper describes the status and development of the aforementioned su- perferric magnets. Differences and common features will be clarified.

Dr. Hanno Volker Leibrock: h.leibrock@gsi.de


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