ENTRY 23429 20180920 227223429 0 1 SUBENT 23429001 20180919 227223429 1 1 BIB 13 51 23429 1 2 TITLE Measurement of the spin dependent neutron-proton total23429 1 3 cross section differences deltaSIGMA-T and deltaSIGMA-L23429 1 4 between 0.63 and 1.08 GeV 23429 1 5 AUTHOR (F.Lehar, A.De Lesquen, L.Van Rossum, P.Chaumette, 23429 1 6 J.Deregel, J.Fabre, M.De Mali, J.M.Fontaine, D.Legrand,23429 1 7 F.Perrot, J.Ball, C.D.Lac, P.Bach, G.Gaillard, R.Hess, 23429 1 8 Ph.Sormani, V.Ghazikhanian, C.A.Whitten, R.Peschina, 23429 1 9 E.Rossle) 23429 1 10 REFERENCE (J,PL/B,189,241,1987) 23429 1 11 INSTITUTE (2FR SAC) F.Lehar, A.De Lesquen, L.Van Rossum, 23429 1 12 P.Chaumette, J.Deregel, J.Fabre, M.De Mali,J.M.Fontain,23429 1 13 D.Legrand, F.Perrot, J.Ball, C.D.Lac 23429 1 14 (2SWTGVE) P.Bach, G.Gaillard, R.Hess, Ph.Sormani 23429 1 15 (1USACLA) V.Ghazikhanian, C.A.Whitten 23429 1 16 (2GERFRB) R.Pescina, E.Rossle 23429 1 17 FACILITY (SYNCH,2FR SAC) SATURNE II 23429 1 18 INC-SOURCE (POLNS,D-BE) Polarized beam of quasi-monochromatic 23429 1 19 neutrons produced by break-up of vector-polarized 23429 1 20 deuterons on a 20 cm thick Be target. Beam spot at 23429 1 21 sample position 20 mm diameter. 23429 1 22 (POLTR) Polarized proton sample 23429 1 23 INC-SPECT Beam intensity ~3.*10**+5 neutrons/burst for 0.63 GeV,23429 1 24 (2.-3.)*10**+6 neutrons/burst for other energies. 23429 1 25 DETECTOR (SCIN) S- beam monitor, T-transmission detector. 23429 1 26 Veto counters S3A and T3a of 150 mm diameter, 3mm 23429 1 27 thickness, 23429 1 28 S1 and S2 scintillators of the same diameter, 23429 1 29 T1 and T2 counters of 80 mm diameter, 2mm thickness. 23429 1 30 Neutron detection efficiency ~1.3% for S, 1.8% for T . 23429 1 31 Solid angle subtended by transmission detector at the 23429 1 32 center of target 0.6 - 2.5 msr, corresponding to 23429 1 33 Lab.angle 0.8 - 1.6 degree. 23429 1 34 Probability 5.E-3 for two beam neutrons within the 23429 1 35 counter resolving time 20nsec. 23429 1 36 Probability of missing a count in the transmission 23429 1 37 detector 1.5E-6 . 23429 1 38 METHOD (TRN) Neutron transmission on proton target. 23429 1 39 Total number of counts in transmission counter 23429 1 40 0.5E+8 for deltaSIGMA-T at 0.63 GeV, 23429 1 41 ~1.6E+8 for other measurements. 23429 1 42 SAMPLE Saclay frozen spin polarized proton target (PPT) . 23429 1 43 Pentanol of 35 mm thick, 40 mm wide, 49 mm high . 23429 1 44 CORRECTION No correction for the finite solid angle, 23429 1 45 no correction for effects due to the low energy tail 23429 1 46 of the neutron beam spectrum. 23429 1 47 ERR-ANALYS (ERR-S) Statistical error 23429 1 48 (ERR-SYS) Systematical error includes uncertainties: 23429 1 49 on beam and target polarization, 23429 1 50 on hydrogen content in the target, 23429 1 51 an estimate of the residual error due to misalignments 23429 1 52 HISTORY (20180920C) M.M. 23429 1 53 ENDBIB 51 0 23429 1 54 COMMON 3 3 23429 1 55 POL-BM POL-BM-ERR POL-TR 23429 1 56 NO-DIM NO-DIM NO-DIM 23429 1 57 0.52 0.02 0.85 23429 1 58 ENDCOMMON 3 0 23429 1 59 ENDSUBENT 58 0 23429 199999 SUBENT 23429002 20180920 227223429 2 1 BIB 2 4 23429 2 2 REACTION (1-H-1(N,TOT),TRS,SIG,,DSP/FCT) 23429 2 3 deltaSIGMA-T 23429 2 4 Cross section difference divided by 2 23429 2 5 STATUS (TABLE) Table 1 of J.Phys. Letters,Sect.B,189,241,1987 23429 2 6 ENDBIB 4 0 23429 2 7 NOCOMMON 0 0 23429 2 8 DATA 4 4 23429 2 9 EN DATA ERR-S ERR-SYS 23429 2 10 GEV MB MB MB 23429 2 11 0.63 -4.45 2.28 0.31 23429 2 12 0.88 -2.99 2.05 0.21 23429 2 13 0.98 -4.51 1.45 0.33 23429 2 14 1.08 -1.33 1.47 0.20 23429 2 15 ENDDATA 6 0 23429 2 16 ENDSUBENT 15 0 23429 299999 SUBENT 23429003 20180920 227223429 3 1 BIB 2 3 23429 3 2 REACTION (1-H-1(N,TOT),LON,SIG,,DSP) 23429 3 3 deltaSIGMA-L 23429 3 4 STATUS (TABLE) Table 1 of J.Phys. Letters,Sect.B,189,241,1987 23429 3 5 ENDBIB 3 0 23429 3 6 NOCOMMON 0 0 23429 3 7 DATA 4 4 23429 3 8 EN DATA ERR-S ERR-SYS 23429 3 9 GEV MB MB MB 23429 3 10 0.63 5.62 1.27 0.54 23429 3 11 0.88 12.51 3.53 0.73 23429 3 12 0.98 10.41 2.62 0.62 23429 3 13 1.08 5.60 2.60 0.35 23429 3 14 ENDDATA 6 0 23429 3 15 ENDSUBENT 14 0 23429 399999 ENDENTRY 3 0 2342999999999