ENTRY S0221 20210119 S029S022100000001 SUBENT S0221001 20210119 S029S022100100001 BIB 13 66 S022100100002 TITLE One-proton knockout from 16C at around 240 MeV/nucleon S022100100003 AUTHOR (Y.X.Zhao,Y.Z.Sun,S.T.Wang,Z.Y.Sun,X.H.Zhang,D.Yan, S022100100004 D.Y.Pang,P.Ma,Y.H.Yu,K.Yue,S.W.Tang,S.M.Wang,F.Fang, S022100100005 Y.Sun,Z.H.Cheng,X.M.Liu,H.R.Yang,C.G.Lu,L.M.Duan) S022100100006 INSTITUTE (3CPRIMP,3CPRUCA,3CPRLNZ,3CPRBHN) S022100100007 REFERENCE (J,PR/C,100,044609,2019) S022100100008 #doi:10.1103/PhysRevC.100.044609 S022100100009 FACILITY (CYCLO,3CPRIMP) External Target Facility (ETF) S022100100010 INC-SOURCE (FRAGM) A primary beam of 18O was accelerated to 280 S022100100011 MeV/nucleon by the main Cooler Storage Ring (CSRm) S022100100012 synchrotron of the Heavy Ion Research Facility in S022100100013 Lanzhou (HIRFL) and directed onto a Be target of 15 mm S022100100014 thickness. The unstable secondary beams produced S022100100015 by fragmentation of 18O were separated using the S022100100016 Radioactive Ion Beam Line in Lanzhou-II (RIBLL2) and S022100100017 transported to the experimental area where the ETF is S022100100018 located. S022100100019 SAMPLE A 900 mg/cm2 thick carbon target. S022100100020 DETECTOR The acceptance of the ETF detector system for the 15B S022100100021 fragments amounted to about 100%. The detection S022100100022 efficiency of the ETF was calibrated using the S022100100023 various secondary beams, and the derived efficiencies S022100100024 were 80%-90%, depending on the charge number of the S022100100025 beam particles. S022100100026 (SCIN,IOCH) The time of flight was measured between S022100100027 two plastic scintillator detectors (SC1 and SC2) and S022100100028 the energy loss was recorded by a multiple sampling S022100100029 ionization chamber (MUSIC1). The time of flight was S022100100030 measured between a plastic scintillator (SC2) and a S022100100031 30-strip plastic scintillator wall (TOFW) placed S022100100032 about 10 m downstream from the target. The energy S022100100033 loss was measured by a multiple sampling ionization S022100100034 chamber (MUSIC2) placed 50 cm downstream of the S022100100035 reaction target. S022100100036 (MWDC) Two multiwire drift chambers, located upstream S022100100037 of the carbon target and each having an active area S022100100038 of 13 x 13 cm2, were used to measure the trajectories S022100100039 of the incoming particles. The magnetic rigidity of S022100100040 the outgoing charged fragments passing through the S022100100041 ETF magnet was reconstructed from the positions S022100100042 measured using two MWDCs placed upstream and three S022100100043 MWDCs placed downstream of the magnet. The two MWDCs S022100100044 placed upstream of the magnet have an active area of S022100100045 13 x 13 cm2. Each of the three MWDCs downstream of S022100100046 the magnet has an active area of 80 x 60 cm2. S022100100047 METHOD (TOF,EDE) The secondary cocktail beams, magnetically S022100100048 centered on 16C, were identified using the TOF-dE S022100100049 method. S022100100050 (COINC) The trigger of the data acquisition system S022100100051 was generated only by requiring the coincidence of S022100100052 the signals from SC1 and SC2, both in front of the S022100100053 reaction target. S022100100054 ANALYSIS To avoid effects arising from reactions on the target S022100100055 frame, the beam-spot size on the target was limited S022100100056 to 4 cm in diameter in the off-line analysis by S022100100057 setting a software gate using the information from S022100100058 the MWDCs. The background contributions were measured S022100100059 by using target-out runs and subtracted. S022100100060 ERR-ANALYS (DATA-ERR) The uncertainties are dominated by S022100100061 statistical errors, while systematic errors mainly S022100100062 arise from the correction for the ETF detection S022100100063 efficiency and are added to the statistical S022100100064 uncertainty in quadrature. S022100100065 STATUS (TABLE) The text of P044609-3 and table 1 of S022100100066 Phys.Rev.C,100,044609(2019) S022100100067 HISTORY (20210119C) Compiled by Liu Lile (CNDC) S022100100068 ENDBIB 66 0 S022100100069 NOCOMMON 0 0 S022100100070 ENDSUBENT 69 0 S022100199999 SUBENT S0221002 20210119 S029S022100200001 BIB 1 1 S022100200002 REACTION (6-C-12(6-C-16,X)5-B-15,,SIG) S022100200003 ENDBIB 1 0 S022100200004 NOCOMMON 0 0 S022100200005 DATA 3 1 S022100200006 EN DATA DATA-ERR S022100200007 MEV/A MB MB S022100200008 239. 16. 2. S022100200009 ENDDATA 3 0 S022100200010 ENDSUBENT 9 0 S022100299999 ENDENTRY 2 0 S022199999999