ENTRY O0653 19990527 0000O065300000001 SUBENT O0653001 19990527 0000O065300100001 BIB 17 66 O065300100002 TITLE The Energy Distribution of the Beam from Uppsala O065300100003 Neutron Source at the Proton Energy of 162 MeV. O065300100004 AUTHOR (T.ROENNQVIST) O065300100005 INSTITUTE (2SWDUPP) O065300100006 REFERENCE (W,ROENNQVIST,19930809). O065300100007 COMMENT The Title of the Communication is Suggested by O065300100008 Compiler. O065300100009 REL-REF (N,,H.CONDE+,J,NIM/A,292,121,1990) Description of O065300100010 Facility. O065300100011 (N,22223001,T.ROENNQVIST+,J,PR/C,45,(2),496,199202) O065300100012 Details of the Data Processing. O065300100013 The Similar Experimental Setup was Used in the Quoted O065300100014 Publications. O065300100015 (R,,R.A.ARNDT+,J,PR/D,35,128,1987) The Computer Code O065300100016 Said was Used For Calculation of N-P Cross Sections O065300100017 Needed For Reconstruction of Neutron Spectrum. O065300100018 FACILITY (CYCLO,2SWDUPP) Gustaf Werner Cyclotron of the O065300100019 Svedberg Laboratory, Uppsala. O065300100020 SAMPLE 7-Li Disc, 8 mm Thick, 99.984% Enrichment, was Used O065300100021 For Neutron Production. O065300100022 C-H-2 and Carbon Targets were Used For Measurements of O065300100023 Neutron Energy Spectrum by Means of N-P Reaction. O065300100024 DETECTOR (MWPC) Multiwire Proportional Chambers were Mounted O065300100025 Between the C-H-2 and Carbon Targets to Determine in O065300100026 Which Layer the Reaction Occurs and Thus to Correct O065300100027 For the Energy Losses of the Recoil Protons in the O065300100028 Subsequent Targets. O065300100029 (MAGSP) Dipole Magnet For Momentum Analysis of Recoil O065300100030 Protons. O065300100031 (MWPC) Four Position-Sensitive Drift Chambers, Two in O065300100032 Front and Two Behind the Dipole Magnet, are Used to O065300100033 Determine the Energy and Emission Angle of the Recoil O065300100034 Protons. O065300100035 (COIN,SCIN,SCIN,SCIN) The Event was Generated by O065300100036 Triple Coincidence Between Plastic Scintillators: a O065300100037 Thin One Placed Downstream the N-P Targets and Two O065300100038 Thicker Ones Behind the Last Drift Chamber. O065300100039 METHOD (EXTB,SITA) Proton Beam Focussed to a Diameter of O065300100040 About 5 mm in the Lithium Target. The Unaffected O065300100041 Proton Beam was Bent by a Magnet Into a Well-Shielded O065300100042 Beam Dump, While the Neutrons were Collimated in a O065300100043 Narrow Cone at 0 Degrees by a Collimator System, O065300100044 Before Entering the Experimental Area About 8 M After O065300100045 The Production Target. The Neutron Beam Spot at the O065300100046 Irradiation Position had a Diameter of 7 Cm. O065300100047 (TOF,COINC,PHD). O065300100048 PART-DET (P) Immediately Detected Particle. O065300100049 EN-SEC (E,N) O065300100050 CORRECTION Performed: Events Due to Protons Contaminating the O065300100051 Neutron Beam, and Due to N-P Reactions in Construction O065300100052 Materials. O065300100053 Energy Dependence of the N-P Scattering Cross Section O065300100054 Is Taken Into Account. O065300100055 ANALYSIS Neutron Spectrum was Reconstructed from the One of O065300100056 Recoil Protons. O065300100057 Recoil Proton Spectra from Neutron Scattering on O065300100058 Hydrogen were Obtained by Subtracting Carbon Spectra O065300100059 From Those of C-H-2 After Normalization. Then the O065300100060 Neutron Spectrum was Reconstructed with the Use of N-P O065300100061 Cross Section Values - See Rel-Ref. O065300100062 ERR-ANALYS Not Given by Author. O065300100063 STATUS (TABLE). O065300100064 HISTORY (19990403C) By Khlopin Radium Institute - A.P. O065300100065 (19990419A) Reaction Line is Corrected. O065300100066 (19990419U) Last checking has been done. O065300100067 (19990527A) DATE is corrected O065300100068 ENDBIB 66 0 O065300100069 NOCOMMON 0 0 O065300100070 ENDSUBENT 69 0 O065300199999 SUBENT O0653002 19990527 0000O065300200001 BIB 2 4 O065300200002 REACTION (3-LI-7(P,X)0-NN-1,,DA/DE,,REL) O065300200003 COMMENT - By Compiler - A Small Negative Value in the Spectrum O065300200004 Originates Probably from Subtraction of Background Due O065300200005 To N-P Scattering on Carbon. O065300200006 ENDBIB 4 0 O065300200007 COMMON 2 3 O065300200008 EN-APRX ANG O065300200009 MEV ADEG O065300200010 162. 0. O065300200011 ENDCOMMON 3 0 O065300200012 DATA 2 60 O065300200013 E DATA O065300200014 MEV ARB-UNITS O065300200015 110.5 2.32 O065300200016 111.5 1.8 O065300200017 112.5 1.97 O065300200018 113.5 1.97 O065300200019 114.5 1.94 O065300200020 115.5 1.76 O065300200021 116.5 2.6 O065300200022 117.5 3.54 O065300200023 118.5 2.74 O065300200024 119.5 2.68 O065300200025 120.5 1.08 O065300200026 121.5 3.28 O065300200027 122.5 2.55 O065300200028 123.5 2.11 O065300200029 124.5 4.03 O065300200030 125.5 3.81 O065300200031 126.5 3.26 O065300200032 127.5 3.23 O065300200033 128.5 5.23 O065300200034 129.5 4.29 O065300200035 130.5 3.43 O065300200036 131.5 2.29 O065300200037 132.5 1.99 O065300200038 133.5 1.26 O065300200039 134.5 1.27 O065300200040 135.5 4.13 O065300200041 136.5 1.59 O065300200042 137.5 2.48 O065300200043 138.5 1.92 O065300200044 139.5 2.51 O065300200045 140.5 2.81 O065300200046 141.5 2.37 O065300200047 142.5 4.14 O065300200048 143.5 3.22 O065300200049 144.5 2.35 O065300200050 145.5 2.99 O065300200051 146.5 2.49 O065300200052 147.5 2.84 O065300200053 148.5 1.54 O065300200054 149.5 4.96 O065300200055 150.5 4.76 O065300200056 151.5 3.65 O065300200057 152.5 2.86 O065300200058 153.5 2.1 O065300200059 154.5 1.31 O065300200060 155.5 2.32 O065300200061 156.5 2.12 O065300200062 157.5 7.41 O065300200063 158.5 23.58 O065300200064 159.5 67.81 O065300200065 160.5 77.31 O065300200066 161.5 41.63 O065300200067 162.5 8.68 O065300200068 163.5 3.15 O065300200069 164.5 1.33 O065300200070 165.5 0.46 O065300200071 166.5 0.25 O065300200072 167.5 -0.16 O065300200073 168.5 0.1 O065300200074 169.5 0. O065300200075 ENDDATA 62 0 O065300200076 ENDSUBENT 75 0 O065300299999 ENDENTRY 2 0 O065399999999