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| Hauptseite > Publikationsdatenbank > Neutron Target for HiCANS - An engineering challenge |
| Hauptseite > Publikationsdatenbank > Neutron Target for HiCANS - An engineering challenge |
| Talk (non-conference) (Invited) | FZJ-2026-01836 |
2026
Abstract: The advent of high-current accelerator systems launched the development of high-current accelerator-driven neutron sources (Hi-CANS) utilizing low energy nuclear reactions. These facilities are intended to bridge the gap between the high-power spallation sources and the low power CANS. They are designed to maximize beam brightness and to offer performance of their beamline instrumentation highly competitive with existing research reactors. Within the framework of the Jülich High Brilliance Neutron Source (HBS) project, a HiCANS is developed. One of the key components as well as the main power-limiting factor is the target that releases neutrons from the impinging protons via nuclear reactions. Since the neutron yield of nuclear reactions is quite small, this is compensated with a high proton current. However, the high proton current leads to a strong heat release inside the target. At the same time the target has to be very compact to allow the subsequent extraction of a neutron beam with a high brilliance. Overall, this leads to unique requirements, such as those for the HBS target given by a 70 MeV pulsed proton beam with a peak current of 100 mA and an average thermal power release of 100 kW inside the target with a surface area of 100 cm². The talk will highlight the technical challenges involved in designing this new type of HiCANS target. Starting with the choice of materials, it will cover topics such as heat dissipation, radiation damage, and handling an activated target, as well as the difficulties involved in properly testing such a target.
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