/*===================================================================*/ /* NRDF D1760 Data No.12 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,12; 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,12; /* 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=C(P,N)X; THK-TGT=20000MG/CM**2; INC-ENGY-LAB=1.5GEV; DET-PARTCL=N; ANL=MONTE-MTHD'14'; /* '14' HETC (HIGH ENERGY TRANSPORT CODE) [K.C.CHANDLER, T.W.ARMSTRONG, CCC-178(1977)]. */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,12; 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 0.0013602 +-0.00026174 1.7500 0.0010452 +-0.00023473 2.5000 0.00088361 +-0.00015899 3.5000 0.00082754 +-0.00013167 4.5000 0.00076636 +-0.00013293 5.5000 0.00067674 +-0.00011657 7.0000 0.00049394 +-8.1227E-05 9.0000 0.00045143 +-6.1893E-05 12.500 0.00035203 +-4.4382E-05 17.500 0.00030793 +-3.8755E-05 25.000 0.00023134 +-2.8937E-05 35.000 0.00019421 +-2.5663E-05 45.000 0.00019728 +-2.5830E-05 55.000 0.00016813 +-2.5402E-05 70.000 0.00012306 +-1.8345E-05 90.000 5.7873E-05 +-1.3231E-05 125.00 2.7122E-05 +-7.9426E-06 175.00 1.1887E-05 +-5.6628E-06 \END; /*===================================================================*/ |