Speaker
Description
The Targeted Alpha Tumor Therapy and Other Oncological Solutions (TATTOOS) facility at the Paul Scherrer Institute (PSI) will address the growing demand for medically relevant radionuclides using proton-induced spallation at the PSI High Intensity Proton Accelerator (HIPA). The target is designed to operate with a 100 microA - 590 MeV proton beam at up to 2400 °C for 2–5 weeks. To study thermal mechanisms critical to target performance, a high-temperature test stand was developed based on PSI’s 60 keV, 100 mA electron beam welding machine. This setup allows heating tantalum foils in vacuum to melting temperatures while investigating thermal shock response, emissivity enhancement techniques, and temperature distributions using a Gaussian beam profile with wobbling frequency up to 1000 Hz.
We will present here the static and wobbled beam profiles measurement using a 50 μm tungsten wire scanner moving up to 60 mm/s, with thermionic emission suppressed via voltage biasing. Then, FLUKA and CASINO simulations will show the penetration and scattering differences between the 590 MeV proton and 60 keV electron beams. Finally, temperature measurement for various rotation radii will be presented. Despite differing heating mechanisms, the resulting thermal behavior is directly comparable, supporting target design under realistic operating conditions.
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