ENTRY O0652 19990527 0000O065200000001 SUBENT O0652001 19990527 0000O065200100001 BIB 17 66 O065200100002 TITLE The Energy Distribution of the Beam from Uppsala O065200100003 Neutron Source at the Proton Energy of 135 MeV. O065200100004 AUTHOR (T.ROENNQVIST) O065200100005 INSTITUTE (2SWDUPP) O065200100006 REFERENCE (W,ROENNQVIST,19930528). O065200100007 COMMENT The Title of the Communication is Suggested by O065200100008 Compiler. O065200100009 REL-REF (N,,H.CONDE+,J,NIM/A,292,121,1990) Description of O065200100010 Facility. O065200100011 (N,22223001,T.ROENNQVIST+,J,PR/C,45,(2),496,199202) O065200100012 Details of the Data Processing. O065200100013 The Similar Experimental Setup was Used in the Quoted O065200100014 Publications. O065200100015 (R,,R.A.ARNDT+,J,PR/D,35,128,1987) The Computer Code O065200100016 Said was Used For Calculation of N-P Cross Sections O065200100017 Needed For Reconstruction of Neutron Spectrum. O065200100018 FACILITY (CYCLO,2SWDUPP) Gustaf Werner Cyclotron of the O065200100019 Svedberg Laboratory, Uppsala. O065200100020 SAMPLE 7-Li Disc, 8 mm Thick, 99.984% Enrichment, was Used O065200100021 For Neutron Production. O065200100022 C-H-2 and Carbon Targets were Used For Measurements of O065200100023 Neutron Energy Spectrum by Means of N-P Reaction. O065200100024 DETECTOR (MWPC) Multiwire Proportional Chambers were Mounted O065200100025 Between the C-H-2 and Carbon Targets to Determine in O065200100026 Which Layer the Reaction Occurs and Thus to Correct O065200100027 For the Energy Losses of the Recoil Protons in the O065200100028 Subsequent Targets. O065200100029 (MAGSP) Dipole Magnet For Momentum Analysis of Recoil O065200100030 Protons. O065200100031 (MWPC) Four Position-Sensitive Drift Chambers, Two in O065200100032 Front and Two Behind the Dipole Magnet, are Used to O065200100033 Determine the Energy and Emission Angle of the Recoil O065200100034 Protons. O065200100035 (COIN,SCIN,SCIN,SCIN) The Event was Generated by O065200100036 Triple Coincidence Between Plastic Scintillators: a O065200100037 Thin One Placed Downstream the N-P Targets and Two O065200100038 Thicker Ones Behind the Last Drift Chamber. O065200100039 METHOD (EXTB,SITA) Proton Beam Focussed to a Diameter of O065200100040 About 5 mm in the Lithium Target. The Unaffected O065200100041 Proton Beam was Bent by a Magnet Into a Well-Shielded O065200100042 Beam Dump, While the Neutrons were Collimated in a O065200100043 Narrow Cone at 0 Degrees by a Collimator System, O065200100044 Before Entering the Experimental Area About 8 M After O065200100045 The Production Target. The Neutron Beam Spot at the O065200100046 Irradiation Position had a Diameter of 7 Cm. O065200100047 (TOF,COINC,PHD). O065200100048 PART-DET (P) Immediately Detected Particle. O065200100049 EN-SEC (E,N) O065200100050 CORRECTION Performed: Events Due to Protons Contaminating the O065200100051 Neutron Beam, and Due to N-P Reactions in Construction O065200100052 Materials. O065200100053 Energy Dependence of the N-P Scattering Cross Section O065200100054 Is Taken Into Account. O065200100055 ANALYSIS Neutron Spectrum was Reconstructed from the One of O065200100056 Recoil Protons. O065200100057 Recoil Proton Spectra from Neutron Scattering on O065200100058 Hydrogen were Obtained by Subtracting Carbon Spectra O065200100059 From Those of C-H-2 After Normalization. Then the O065200100060 Neutron Spectrum was Reconstructed with the Use of N-P O065200100061 Cross Section Values - See Rel-Ref. O065200100062 ERR-ANALYS Not Given by Author. O065200100063 STATUS (TABLE). O065200100064 HISTORY (19990403C) By Khlopin Radium Institute - A.P. O065200100065 (19990419A) Reaction Line is Corrected. O065200100066 (19990419U) Last checking has been done. O065200100067 (19990527A) DATE is corrected O065200100068 ENDBIB 66 0 O065200100069 NOCOMMON 0 0 O065200100070 ENDSUBENT 69 0 O065200199999 SUBENT O0652002 19990527 0000O065200200001 BIB 1 1 O065200200002 REACTION (3-LI-7(P,X)0-NN-1,,DA/DE,,REL) O065200200003 ENDBIB 1 0 O065200200004 COMMON 2 3 O065200200005 EN-APRX ANG O065200200006 MEV ADEG O065200200007 135. 0. O065200200008 ENDCOMMON 3 0 O065200200009 DATA 2 60 O065200200010 E DATA O065200200011 MEV ARB-UNITS O065200200012 85.5 2.19 O065200200013 86.5 4.13 O065200200014 87.5 4.1 O065200200015 88.5 3.92 O065200200016 89.5 2.44 O065200200017 90.5 3.91 O065200200018 91.5 3.97 O065200200019 92.5 4.06 O065200200020 93.5 3.72 O065200200021 94.5 4.84 O065200200022 95.5 4.51 O065200200023 96.5 3.74 O065200200024 97.5 4.73 O065200200025 98.5 5.28 O065200200026 99.5 2.39 O065200200027 100.5 7.2 O065200200028 101.5 4.3 O065200200029 102.5 4.81 O065200200030 103.5 4.5 O065200200031 104.5 4.53 O065200200032 105.5 4.1 O065200200033 106.5 4.68 O065200200034 107.5 3.14 O065200200035 108.5 4.24 O065200200036 109.5 5.07 O065200200037 110.5 4.38 O065200200038 111.5 5.21 O065200200039 112.5 3.38 O065200200040 113.5 3.36 O065200200041 114.5 4.32 O065200200042 115.5 4.41 O065200200043 116.5 6.86 O065200200044 117.5 3.33 O065200200045 118.5 3.74 O065200200046 119.5 4.14 O065200200047 120.5 3.4 O065200200048 121.5 3.81 O065200200049 122.5 5.3 O065200200050 123.5 4.95 O065200200051 124.5 4.77 O065200200052 125.5 3.46 O065200200053 126.5 3.64 O065200200054 127.5 3.57 O065200200055 128.5 3.46 O065200200056 129.5 5.95 O065200200057 130.5 8.93 O065200200058 131.5 20.15 O065200200059 132.5 33.36 O065200200060 133.5 50.11 O065200200061 134.5 56.24 O065200200062 135.5 44.27 O065200200063 136.5 28.47 O065200200064 137.5 13.8 O065200200065 138.5 5.65 O065200200066 139.5 2.05 O065200200067 140.5 0.65 O065200200068 141.5 0.7 O065200200069 142.5 0.42 O065200200070 143.5 0.14 O065200200071 144.5 0. O065200200072 ENDDATA 62 0 O065200200073 ENDSUBENT 72 0 O065200299999 ENDENTRY 2 0 O065299999999