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Zvonarev, I.

Paper Title Page
MOEP02

 Status of Linac URAL-30M - Novel Injector to Accelerator Complex of IHEP  

  • O.Belyaev, Yu.Budanov, I.Zvonarev, A.Maltsev, E.Mazurov, V.Stepanov, S.Strekalovskyh, V.Teplyakov, N.Turin
    State Research Centre of Russia Institute for High Energy Physics, Protvino, Russia

The URAL-30 proton linac was commissioned in 1977. It applies a through front-to-end RFQ-focusing up to the top energy of 30 MeV. Since 1985 till now, this facility operates as an injector to IHEP booster. A-few-year-long scientific research efforts and computer simulations allowed to launch design of a novel, upgraded machine. This accelerator, URAL-30M is currently being manufactured in IHEP. Accelerating rate in URAL-30M is greater then in old injector, in RFQ by means of electrode's shape and in RFQ-DTL (RFQ Drift Tube Linac) by means of increasing voltage in accelerating gaps. For the time being, a conventional RFQ and three of four RFQ-DTL sections (up to 22 MeV) are assembled and subjected to pre-commissioning tests. Fourth is being tuned. In this machine, measures are foreseen to facilitate a better section-to-section matching of beam. New injector exhibits a higher shunt impedance and enable much an easier assembly of the electrodes. Preliminary testing of the first two RFQ-DTL sections of URAL-30M indicates that emittance growth is now significantly lower, as compared to its predecessor. All the more, URAL-30M has a shorter length of 23.4 m.

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