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<\/p>\nThe HBS belongs to the class of low energy compact accelerator based neutron sources. In the case of HBS the accelerator will provide a proton beam of 100 mA current and an energy of 70 MeV. The proton beam will be extracted from a hydrogen plasma, which will be ignited in the plasma generator of the proton source. An Electron Cyclotron Resonance (ECR) ion source will be used with an RF (Radio Frequency)-driven gas discharge.<\/p>\n
The accelerator has to provide a pulsed proton beam for at least three target stations with an average beam power of 100 kW each resulting in a total average beam power of 300 kW and a total duty cycle of ~4.3%. With these parameters a normal conducting room temperature linear accelerator is considered with the advantages of easy access, simpler and available technology, lower price and high reliability.<\/p>\n
The HBS linac will consist of a front end (ECR source, low energy beam transfer (LEBT, 2.5 MeV double RF quadrupole) and a drift tube linac (DTL) with 35 room temperature H-type cavities to achieve the final beam energy of 70 MeV. All RF structures are operated at 176.1 MHz and are designed for high duty cycle.<\/p>\n
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The accelerator development for the HBS is done in close collaboration with the Goethe University Frankfurt<\/a> and the Helmholtz Institute Mainz<\/a>.<\/p>\n