/*===================================================================*/ /* NRDF D0962 Data No.1 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,1; D#=D962; TITLE=/Measurement of a cross section for the 27Al(p,3pn)24Na reaction at 12 GeV/; PURPOSE=/To establish the calibration method of intensity monitors of the 12 GeV primary proton beam at KEK./; ATH=(H.HIRABAYASHI'1', H.IKEDA'1', H.ISHII'1', K.KATOH'1', K.KONDO'1', M.TAINO'1', M.TAKASAKI'1', T.TOMINAKA'1', A.YAMAMOTO'1', T.ASANO'2', Y.ASANO'2', Y.IGUCHI'2', H.KUDO'2', S.MORI'2', Y.TAKADA'2'); INST-ATH=(2JPNKEK'1', 2JPNTSU'2'); /* '2' Institute of Applied Physics */ REF=JPJ; VLP=51(1982)3098; RCTS=27AL(P,24NA)X; PHQS=XSECTN; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,1; /* 2003-10-24 : Converted, Data converted to EXFOR E962 and EXFOR O0541 */ PHQ=XSECTN; CHM=ELM; PHYS-FORM=SLD'3'; /* '3' Aluminium foils which consisted of three or four layers are used. An inner aluminium foil which was sandwiched with outer aluminium foils was used as a sample in order to cancel scattering-in and scattering-out nuclei by incident protons [A.M. Poskanzer et al., Phys. Rev. 102(1956)1390]. */ THK-TGT=(5.26+-0.05MG/CM**2, 3.44+-0.03MG/CM**2); POL-TGT=0%; ALGN-TGT=0%; ACC=SYN; INST-ACC=2JPNKEK; INC-ENGY-LAB=12GEV; POL-PRJ=0%; DET-PARTCL=GAMMA'4'; /* '4' Delayed gamma (1368 keV) from 24Na is measured. */ COINC=NO; ANT-COINC=NO; DET-SYS=(ACTV,GE(LI)'5',GE'6'); /* '5' Detection efficiency is 1.57E-2+-0.05E-2. Standard 60Co sources of about 0.1 micro-Ci were used for calibration of the detection efficiency. */ /* '6' Pure Germanium detector, detection efficiency is 1.96E-3+-0.06E-3. Standard 60Co sources of about 0.1 micro-Ci were used for calibration of the detection efficiency. */ /* Experimental Method: - Activation (Immediately after irradiation foils were removed from the hot area, and a sample portion of the inner foil which corresponded to a beam spot size was cut and sealed in a disk container made of lucite.) RCT=27AL(P,24NA)X; /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,1; INC-ENGY-LAB=12GEV; SYS-ERR=(10%'7',5%'8',3.5%'9',2%'10',1%'11'); /* '7' Error in primary proton beam intensity */ /* '8' Error in beam halos (less than 5%) */ /* '9' Error in detector efficiencies */ /* '10' Error in position of samples */ /* '11' Error in alminium foil thicknesses */ EMT=GAMMA'12'; /* '12' Delayed Gammas */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; XSECTN DELTA-XSECTN'13' FLAG'14' (MB) (MB) (NODIM) 8.3 +-1.0 1. 7.8 +-1.0 2. 8.1 +-1.0 3. 8.1 +-0.9 4. \END; /*===================================================================*/ |