131 LA UR 03 5862 - National Nuclear Security Administration ...

Table 2.11.2-1. Los Alamos Neutron Science Center (TA-53)/Comparison of Operations2-118SWEIS Yearbook—2002CAPABILITY SWEIS ROD a 1998 YEARBOOK 1999 YEARBOOK 2000 YEARBOOK 2001 YEARBOOK 2002 YEARBOOKAccelerator BeamDelivery,Maintenance, andDevelopmentDeliver LANSCE linac beamto Areas A, B, C, WNRfacility, Manuel LujanCenter, Dynamic ExperimentFacility, and new isotopeproduction facility for 10months/yr (6,400 hrs).Positive ion current 1,250microampere and negativeion current of 200microampere.(a) In 1998, positiveion beam wasproduced for 1,335hours at an averagecurrent of 740microamps. Negativeion beam wasdelivered, at varyingcurrents, to Areas A,B, C, WNR facility,and Lujan Center forup to 1,127 hours.In 1999, H+ beam wasnot produced. H- beamwas delivered, atmaximum current of 93microamps, to lines Band C (505 hours),WNR facility (1,993hours), and LujanCenter (239 hours).Area A did not receivebeam.In 2000, H+ beam wasnot produced. H- beamwas delivered asfollows:(a) to the Lujan Centerfor 1,749 hours at anaverage current of 100microamperes.(b) to WNR Target 2for 307 hours in a“pulse on demand”mode of operation,with an average currentbelow 1 femtoampere,(c) to WNR Target 4for 2,024 hours at anaverage current of 5microamperes,(d) through Line X toLines B and C for 806hours in a “pulse ondemand” mode ofoperation, with anaverage current below1 femtoampere.In 2001, H+ beam wasnot produced. H-beam was delivered asfollows:(a) to the Lujan Centerfor 2,741 hours at anaverage current of 55microamperes,(b) to WNR Target 2for 350 hours in a“pulse on demand”mode of operation,with an averagecurrent below 1femtoampere,(c) to WNR Target 4for 1,989 hours at anaverage current of 5microamperes,(d) through Line X toLines B and C for 465hours in a “pulse ondemand” mode ofoperation, with anaverage current below1 femtoampere.In 2002, H+ beamwas not produced. H-beam was deliveredas follows:(a) to the LujanCenter for 2,303hours at an averagecurrent of 105microamperes with87% total availability(b) to WNR Target 2for 252 hours in a“pulse on demand”mode of operation,with an averagecurrent below 1femtoampere with90% total availability(c) to WNR Target 4for 2,507 hours at anaverage current of 3.5microamperes with88% total availability(d) through Line X toLines B and C for384 hours in a “pulseon demand” mode ofoperation, with anaverage currentbelow 1 femtoamperewith 85% totalavailability.