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Ion Source

The first section of our linacs is an ion source and low energy beam transport (LEBT) system.  The ion source is a microwave ion source, which produces a 25-keV, 30-mA, dc, proton beam with low emittance and high proton fraction.  It can also produce a 40-keV, 25-mA deuteron beam.  A drawing of the injection system is shown below.  The total distance from the ion source to the RFQ is 540 mm. 

The focusing element in the LEBT is a novel dual-solenoid magnet utilizing two separate tape-wound, edge-cooled coils.  The upstream coil produces 25,000 Amp-turns for a current of 85 A.  The downstream coil produces twice the Amp-turns for the same current.  An x,y steering magnet is suspended from the front of the solenoid.


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Drawing of Microwave Ion Source and Magnetic Solenoid Lens.

 

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Ion Source Housing and Solenoid Lens.

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