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H− source and low energy transport for an RFQ preinjector : International conference on ion sources (1990)

Alessi, J. G. ; Brennan, J. M. ; Kponou, A.

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 61 (1990), S. 625-627

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ISSN: 1089-7623

Source: AIP Digital Archive

Topics: Physics , Electrical Engineering, Measurement and Control Technology

Notes: A radio-frequency quadrupole (RFQ) accelerator has replaced a 750-keV Cockcroft-Walton as the H− preinjector for the Brookhaven alternating gradient synchrotron. A magnetron surface-plasma source with a circular aperture is used to produce 65–100 mA of H− at 35 keV with a discharge current of less than 20 A. The symmetry of the beam is maintained in the 2-m transport to the RFQ via the use of magnetic solenoids for focusing. Currents up to 60 mA have been obtained out of the RFQ. A traveling-wave electrostatic chopper in the 35-keV transport line leads to a distortion of the emittance due to space-charge effects.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1141939

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