Accelerator
The 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.
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.
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.
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The accelerator development for the HBS is done in close collaboration with the Goethe University Frankfurt and the Helmholtz Institute Mainz.
Publications:
H. Podlech et al., Conceptual Design of the Proton Linac for the High Brilliance Neutron Source HBS, in Proc, IPAC19, Melbourne, 2019
Members
Dr. Ulrich Rücker
JCNS-2 / JCNS-HBS: Scientific Staff High Brilliance Neutron Source Project (HBS) Authorised representative for radiation protection; B-SSB for X-ray instrumentation in JCNS
- Jülich Centre for Neutron Science (JCNS)
- Quantum Materials and Collective Phenomena (JCNS-2)
Room 202
Prof. Dr. Andreas Lehrach
Head of Accelerator Physics
- Nuclear Physics Institute (IKP)
Room R 358