Thermal Test on Target with Pressed Disks

Beamline Design and Beam Diagnostic for Mo-99 Production Facility Utilizing High Power Electron Accelerators

“…The target, designed by LANL, is composed of a series of 99 Mo disks held in a target holder with cooling gaps between the thin disks. Cooling of the target is provided by flowing helium gas under high pressure through the target holder [3,4].…”

Small Punch Testing of Molybdenum-99 Targets

“…The accelerated electron beam will be directed toward a tungsten (W) window, producing X-rays that then hit the aMo target and knock off one neutron to make 99 Mo. The aMo targets will be stacked into a holder designed with He flow in between each target for heat rejection [4,5]. Therefore, these targets will be subjected to a thermal-pneumatic conditions necessitating the understanding of the aMo target's mechanical performance.…”

“…Previous work was performed to understand the pressure, temperature, and time needed to make the targets from commercially sourced Mo powder [6,9]. Moreover, thermal modeling was used to inform what mechanical and thermal loads are expected when the target is in line with the accelerator [5,10,11]. Therefore, thermal and mechanical testing of the samples are both desired to understand how the chosen geometry and manufacturing method will perform once in application.…”

Thermal Test of 29 mm and 12 mm Targets

“…To validate calculation models, the team performed a series of tests at Argonne's Low Energy Accelerator Facility (LEAF). [3][4][5][6] This report describes additional tests for two target designs: a full-scale target 29 millimeters in diameter and a scaled-down version, 12 millimeters in diameter. We compared the results of the window temperature measurements and cooling system parameters obtained in the experiments with those predicted by analytical calculations and Computation Flow Dynamic (CFD) simulations.…”