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- W2945492777 abstract "The BNL magnetron-type H⁻ ion source and the injec-tor are being upgraded to higher duty-factor as a part of Linac intensity increase project [1]. The BNL magnetron source presently delivers 110 -120 mA H⁻ ion current with 650 us pulse duration and 7 Hz repetition rate. The pulse duration was increased to 1000 μs by modifications of the gas injector pulsed valve and the use of the new arc-discharge power supply (with the arc-current stabilization circuit) which improved current stability and reduced current noise. The Low Energy Beam Transport (LEBT) lines combine two beams. The first line is the polarized OPPIS (Optically Pumped Polarized H⁻ Ion Source) beam-line and the second is the high-intensity un-polarized beam-line from the magnetron source, which transports beam to the RFQ after the passage of 45 degree bending magnet. The second magnetron source was installed in the straight LEBT section in 2017, in which the polarized OPPIS beam was not planned. In this, optimal for H⁻ beam transport configuration, the beam intensity was increased to 80 mA after the RFQ. The experience of the two sources layout operation (one source in operation the second source in standby) might be useful for facilities with the high downtime cost (like high-energy collider LHC or multi-user facilities like SNS)." @default.
- W2945492777 created "2019-05-29" @default.
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- W2945492777 date "2018-08-23" @default.
- W2945492777 modified "2023-09-23" @default.
- W2945492777 title "High-Intensity Magnetron H⁻ Ion Sources and Injector Development at BNL Linac" @default.
- W2945492777 doi "https://doi.org/10.18429/jacow-ipac2018-tupml016" @default.
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