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Title: 29 mm Diameter Test Target Design Report

Abstract

The Northstar target for Mo99 production is made up of Mo100 disks in a stack separated by coolant gaps for helium flow. A number of targets have been tested at ANL for both production of Mo99 and for thermal-hydraulic performance. These have all been with a 12 mm diameter target, even while the production goals have increased the diameter to now 29 mm. A 29 mm diameter target has been designed that is consistent with the ANL beam capabilities and the capabilities of the helium circulation system currently in use at ANL. This target is designed for 500 μA at 35 MeV electrons. While the plant design calls for 42 MeV, the chosen design point is more favorable and higher power given the limits of the ANL accelerator. The intended beam spot size is 12 mm FWHM, but the thermal analysis presented herein conservatively assumed a 10 mm FWHM beam, which results in a 44% higher beam current density at beam center.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1325690
Report Number(s):
LA-UR-16-27128
TRN: US1700009
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ANL; MOLYBDENUM 99; DESIGN; SIZE; MEV RANGE 10-100; THERMAL HYDRAULICS; MOLYBDENUM 100 TARGET; ELECTRON REACTIONS; SAFETY REPORTS; CURRENT DENSITY; THERMAL ANALYSIS; COOLANTS; PERFORMANCE TESTING; ISOTOPE PRODUCTION; MICRO AMP BEAM CURRENTS; Accelerator Design; Technology; Operations

Citation Formats

Woloshun, Keith Albert, Dale, Gregory E., Olivas, Eric Richard, Naranjo, Angela Carol, and Romero, Frank Patrick. 29 mm Diameter Test Target Design Report. United States: N. p., 2016. Web. doi:10.2172/1325690.
Woloshun, Keith Albert, Dale, Gregory E., Olivas, Eric Richard, Naranjo, Angela Carol, & Romero, Frank Patrick. 29 mm Diameter Test Target Design Report. United States. doi:10.2172/1325690.
Woloshun, Keith Albert, Dale, Gregory E., Olivas, Eric Richard, Naranjo, Angela Carol, and Romero, Frank Patrick. Mon . "29 mm Diameter Test Target Design Report". United States. doi:10.2172/1325690. https://www.osti.gov/servlets/purl/1325690.
@article{osti_1325690,
title = {29 mm Diameter Test Target Design Report},
author = {Woloshun, Keith Albert and Dale, Gregory E. and Olivas, Eric Richard and Naranjo, Angela Carol and Romero, Frank Patrick},
abstractNote = {The Northstar target for Mo99 production is made up of Mo100 disks in a stack separated by coolant gaps for helium flow. A number of targets have been tested at ANL for both production of Mo99 and for thermal-hydraulic performance. These have all been with a 12 mm diameter target, even while the production goals have increased the diameter to now 29 mm. A 29 mm diameter target has been designed that is consistent with the ANL beam capabilities and the capabilities of the helium circulation system currently in use at ANL. This target is designed for 500 μA at 35 MeV electrons. While the plant design calls for 42 MeV, the chosen design point is more favorable and higher power given the limits of the ANL accelerator. The intended beam spot size is 12 mm FWHM, but the thermal analysis presented herein conservatively assumed a 10 mm FWHM beam, which results in a 44% higher beam current density at beam center.},
doi = {10.2172/1325690},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}

Technical Report:

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