Beam Steering of the PEFP 100-MeV Linac

Jang, Jiho; Kim, Kui Young; Chung, Byung Chul; Kwon, Hyeok Jung; Cho, Yong Sub

doi:10.3938/jkps.52.789

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Jinst 9 P060071

Beam Dynamics Studies1

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2014

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“…The peak current is 50 mA and the energy is 43 MeV with possible future upgrade to 100 MeV. A 350 MHz, 100 MeV DTL is being built at Korea for their PEFP project [15]. The peak current is 20 mA.…”

Section: Jinst 9 P06007mentioning

confidence: 99%

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Electromagnetic and beam dynamics studies of a high current drift tube linac for LEHIPA

et al. 2014

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We have performed detailed electromagnetic and beam dynamics studies of a 352.21 MHz drift-tube linac (DTL) that will accelerate a 30 mA CW proton beam from 3 to 20 MeV. At such high currents space charge effects are important, and therefore the effect of linear as well as non-linear space charge has been studied (corresponding to uniform and Gaussian initial beam distributions), in order to avoid space charge instabilities. To validate the electromagnetic simulations, a 1.2 m long prototype of the DTL was fabricated. RF measurements performed on the prototype were in good agreement with the simulations. A detailed simulation study of beam halos was also performed, which showed that beyond a current of 10 mA, significant longitudinal beam halos are excited even for a perfectly matched beam, whereas for a mis-matched beam transverse beam halos are also excited. However, these do not lead to any beam loss within the DTL.

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Section: Jinst 9 P06007mentioning

confidence: 99%

“…Quadrupoles are used for transverse focusing of the beam in the DTL. FD [26], FFDD [15] and FFODDO [27] lattices were studied for focussing. The beam in the DTL will be coming from an RFQ.…”

Section: Beam Dynamics Studiesmentioning

confidence: 99%