ENTRY 22714 20160726 22522271400000001 SUBENT 22714001 20160726 22522271400100001 BIB 15 74 2271400100002 TITLE Neutron-proton analyzing power Ay at 68 MeV. 2271400100003 AUTHOR (C.Brogli-Gysin,S.Burzynski,J.Campbell,P.Haffter, 2271400100004 M.Hammans,R.Henneck,J.Jourdan,G.Masson,M.A.Pickar, 2271400100005 I.Sick) 2271400100006 INSTITUTE (2SWTPSI) Henneck, experimental site 2271400100007 (2SWTBAS) Brogli-Gysin, Haffter, Hammans, Jourdan, 2271400100008 Masson, Sick 2271400100009 (3POLIPJ) Burzynski 2271400100010 (1CANTMF) Campbell 2271400100011 (1USAKTY) Henneck 2271400100012 REFERENCE (J,NP/A,541,137,1992) Main reference 2271400100013 REL-REF (I,,R.Henneck+,J,NIM/A,259,329,1987) Technical details 2271400100014 of facility 2271400100015 (M,,M.A.Pickar+,J,PR/C,42,20,1990) Calibration of 2271400100016 neutron polarization 2271400100017 (R,,P.D.Eversheim+,J,PL/B,234,253,1990) Data of ASSUM 2271400100018 FACILITY (CYCLO,2SWTPSI) Polarized Neutron facility installed 2271400100019 at the PSI Injector Cyclotron. 2271400100020 INC-SOURCE (POLNS,P-D) Transverse polarization in H-2(p,n)2P 2271400100021 reaction for polarized neutron production. 2271400100022 Neutron polarization- 0.35 determined by measurement 2271400100023 of proton polarization- 0.85 and transfer coefficient.2271400100024 INC-SPECT Quasi-monoenergetic beam of neutrons with spin, 2271400100025 flipped upon a flip of proton spin. 1 microA proton 2271400100026 beam current, producing about 1.E+6 neutrons/sec on 2271400100027 target. Neutron beam of about 33 mm diameter at the 2271400100028 target, position 3.3 m downstream from production 2271400100029 target. 2271400100030 METHOD (TOF) For neutron energy measurement. 2271400100031 (SFLIP) Proton spin flipped every few seconds. 2271400100032 (EDE) 2271400100033 (REC) Measurement of recoil protons from CH2 converter 2271400100034 downstream of actual target -for separate neutron flux2271400100035 monitor. 2271400100036 (BCINT) The neutron flux normalization is obtained 2271400100037 from the normalization of the proton beam intensity 2271400100038 provided by the Faraday cup. 2271400100039 DETECTOR (SCIN) System of Plastic Scintillator deltaE and 2271400100040 E detectors. Each left and right arm: 2271400100041 Thin (1 or 2 mm thick) deltaE detector at 20 or 30 cm 2271400100042 from target followed by array of up to 6 plastic 2271400100043 E-detectors (10cm wide,50cm high,4cm thick) placed at 2271400100044 150 cm from target. 2271400100045 .Detection of protons recoiling from CH2 target over 2271400100046 range 82deg< ANG-CM < 156deg. 2271400100047 .Detection of scattered neutrons in the range 38deg < 2271400100048 ANG-CM <103deg, employing active liquid scintillation 2271400100049 target. 2271400100050 .Faraday Cup provided proton beam intensity for neutron2271400100051 flux normalization. 2271400100052 (MWPC) Three Multi-wire Proportional Chambers to 2271400100053 repeat measurements in region 107deg < ANG-CM <130deg.2271400100054 SAMPLE .Active liquid scintillator target (NE235H) in 2271400100055 thin-walled glass cylinder of 5cm diameter and 5cm 2271400100056 height in experiment with scattered neutron detection.2271400100057 For recoil experiment- CH2 targets (236 and 326 mg/cm22271400100058 and high-purity graphite for carbon background 2271400100059 determination. 2271400100060 ANALYSIS .Proton-carbon analyzing power at 72.0MeV, 44.0deg 2271400100061 from reaction (6-C-12(P,SCT)6-C-12,,POL/DA,,ANA), see 2271400100062 REL-REF, for data analysis 2271400100063 CORRECTION .Correction For: 2271400100064 Background - Maximal resulting corrections 5% of 2271400100065 Analyzing power. 2271400100066 Computer dead time typically 10%. 2271400100067 Energy dependence of spin transfer coefficient. 2271400100068 Final geometrical acceptance. 2271400100069 Multiple Scattering - for protons only 2271400100070 ERR-ANALYS (DATA-ERR) Statistical and systematical errors. 2271400100071 HISTORY (20061208C) M.M./ S.M. 2271400100072 (20160726U) SD: Entry was re-transmitted to exclude 2271400100073 difference between trans.2181 and Master file. 2271400100074 Small additional corrections. ERR-T -> DATA-ERR. 2271400100075 Two refs moved to REL-REF. 2271400100076 ENDBIB 74 0 2271400100077 COMMON 2 3 2271400100078 EN POL-BM 2271400100079 MEV NO-DIM 2271400100080 68. 0.35 2271400100081 ENDCOMMON 3 0 2271400100082 ENDSUBENT 81 0 2271400199999 SUBENT 22714002 20160726 22522271400200001 BIB 2 3 2271400200002 REACTION (1-H-1(N,EL)1-H-1,,POL/DA,P,ANA) Measurements on 2271400200003 protons recoil detection 2271400200004 STATUS (TABLE) From Table 1 of NP/A,541,137,1992 2271400200005 ENDBIB 3 0 2271400200006 NOCOMMON 0 0 2271400200007 DATA 3 19 2271400200008 ANG-CM DATA DATA-ERR 2271400200009 ADEG NO-DIM NO-DIM 2271400200010 82.0 0.269 0.006 2271400200011 90.3 0.231 0.006 2271400200012 94.0 0.209 0.006 2271400200013 98.7 0.199 0.006 2271400200014 102.3 0.176 0.005 2271400200015 107.3 0.145 0.004 2271400200016 110.7 0.127 0.005 2271400200017 114.8 0.111 0.007 2271400200018 117.8 0.092 0.006 2271400200019 119.0 0.082 0.005 2271400200020 122.3 0.092 0.006 2271400200021 126.1 0.072 0.006 2271400200022 130.0 0.060 0.006 2271400200023 130.7 0.036 0.012 2271400200024 134.5 0.049 0.005 2271400200025 139.0 0.028 0.011 2271400200026 142.7 0.026 0.005 2271400200027 147.2 0.005 0.011 2271400200028 155.2 0.011 0.010 2271400200029 ENDDATA 21 0 2271400200030 ENDSUBENT 29 0 2271400299999 SUBENT 22714003 20160726 22522271400300001 BIB 3 5 2271400300002 REACTION (1-H-1(N,EL)1-H-1,,POL/DA,,ANA) Measurements on 2271400300003 experiment of scattered neutron detection 2271400300004 STATUS (TABLE) From Table 2 of NP/A,541,137,1992 2271400300005 HISTORY (20160726U) SD: SF5=N deleted from REACTION code 2271400300006 (as it is given in Master file). 2271400300007 ENDBIB 5 0 2271400300008 NOCOMMON 0 0 2271400300009 DATA 3 12 2271400300010 ANG-CM DATA DATA-ERR 2271400300011 ADEG NO-DIM NO-DIM 2271400300012 38.6 0.249 0.011 2271400300013 47.5 0.293 0.011 2271400300014 56.5 0.308 0.011 2271400300015 58.9 0.311 0.010 2271400300016 65.3 0.317 0.011 2271400300017 67.8 0.301 0.008 2271400300018 74.2 0.302 0.011 2271400300019 76.6 0.294 0.010 2271400300020 83.1 0.276 0.012 2271400300021 85.5 0.253 0.010 2271400300022 94.3 0.214 0.010 2271400300023 103.1 0.181 0.011 2271400300024 ENDDATA 14 0 2271400300025 ENDSUBENT 24 0 2271400399999 ENDENTRY 3 0 2271499999999