/*===================================================================*/ /* NRDF D1760 Data No.18 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,18; D#=D1760; TITLE=/SPALLATION NEUTRON MEASUREMENT BY THE TIME-OF-FLIGHT METHOD WITH A SHORT FLIGHT PATH/; PURPOSE=/TO MEASURE THE DOUBLE DIFFERENTIAL CROSS SECTION ON PRODUCTION OF THE SPALLATION NEUTRONS./; ATH=(T.NAKAMOTO'1', K.ISHIBASHI'1', N.MATSUFUJI'1', N.SHIGYO'1', K.MAEHATA'1', S.MEIGO'2', H.TAKADA'2', S.CHIBA'2', M.NUMAJIRI'3', T.NAKAMURA'4', Y.WATANABE'5'); INST-ATH=(2JPNKYU'1', 2JPNJAE'2', 2JPNLEP'3', 2JPNTOH'4', 2JPNKYU'5'); /* '1'DEPARTMENT OF NUCLEAR ENGINEERING */ /* '4'CYCLOTRON RADIOISOTOPE CENTER */ /* '5'ENERGY CONVERSION ENGINEERING */ REF=NST; VLP=32(1995)827; RCTS=(C(P,N)X, PB(P,N)X); PHQS=ENGY-SPEC; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,18; /* 2002-11-15 : COMPILED, AUTHOR (T.NAKAMOTO) RECOMMEND TO USE DATA SET IN OTHER REFERENCE [NUCL.SCI.TECHNOL.34(1997)529]. */ RTY=SPAL; PHQ=ENGY-SPEC; ENR=NAT; CHM=ELM; PHYS-FORM=SLD; POL-TGT=0%; ALGN-TGT=0%; ACC=SYN'6'; /* '6' THE PI-2 LINE OF THE 12 GEV PROTON SYNCHROTRON */ INST-ACC=2JPNLEP; BEAM-INTNSTY=XMA'7'; /* '7' IN A LEVEL OF 100000 PROTONS / 2.5 S AT THE PI-2 BEAM LINE. */ POL-PRJ=0%; ION-SOURCE=/ INCIDENT PROTONS WERE GENERATED AS SECONDARY BEAM. TOF METHOD WITH A PAIR OF PILOT U SCINTILLATORS WAS ADOPTED FOR SEPARATION BETWEEN PROTONS AND PIONS. /; DET-PARTCL=N; COINC=NO; ANT-COINC=NO; DET-SYS=(TOF,SCT'8',PLST-SCT'9'); /* '8' TWO DEFFERENT SIZES (DIAMETERXTHICK=5CMX5CM, 2CMX2CM) OF NE213 NEUTRON DETECTORS WERE PLACED IN THE DIRECTIONS OF 15 DEGREE, 30 DEGREE, 60 DEGREE, 90 DEGREE, 120 DEGREE AND 150 DEGREE */ /* '9' NE102A PLASTIC SCINTILLATORS WERE MOUNTED AS VETO DETECTORS TO ELIMINATE CHARGED PARTICLE EVENTS BY THE ANTI-COINCIDENCE METHOD ERS-DET=XKEV'10'; /* '10' THE ENERGY RESOLUTIONS IN ONE SIGMA WERE 5.7 % AT THE NEUTRON ENERGY OF 10 MEV AND 14 % AT 300 MEV. */ EFCN-DET=/ THE UNCERTAINTY OF THE NEUTRON DETECTION EFFICIENCY RANGED UP TO 10 % /; RCT=PB(P,N)X; THK-TGT=15000MG/CM**2; INC-ENGY-LAB=1.5GEV; DET-PARTCL=N; ANL=MONTE-MTHD'20'; /* '20' HETC (HIGH ENERGY TRANSPORT CODE) [K.C.CHANDLER, T.W.ARMSTRONG, CCC-178(1977)]. */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,18; INC-ENGY-LAB=1.5GEV; EMT=N; THTL=90DEG; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; ENGY-EMT-LAB DSIGMA/DOMEGA/DE DELTA-DSIGMA/DOMEGA/DE (MEV) (B/SR/MEV) (B/SR/MEV) 1.2500 0.31071 +-0.066589 1.7500 0.29103 +-0.055345 2.5000 0.25074 +-0.042458 3.5000 0.18001 +-0.028355 4.5000 0.13364 +-0.019913 5.5000 0.10623 +-0.015195 7.0000 0.060228 +-0.0082531 9.0000 0.054614 +-0.0069799 12.500 0.032313 +-0.0039354 17.500 0.016116 +-0.0020332 25.000 0.011360 +-0.0013842 35.000 0.0083682 +-0.0010873 45.000 0.0059931 +-0.00086791 55.000 0.0046805 +-0.00075794 70.000 0.0024444 +-0.00044482 90.000 0.0019209 +-0.00045096 125.00 0.00084886 +-0.00022869 175.00 0.00042523 +-0.00017283 \END; /*===================================================================*/ |