ENTRY 14659 20200829 14721465900000001
SUBENT 14659001 20200829 14721465900100001
BIB 11 68 1465900100002
TITLE Measurement of neutron-proton capture in the SNO+ 1465900100003
water phase 1465900100004
AUTHOR (M.R.Anderson,S.Andringa,M.Askins,D.J.Auty,N.Barros, 1465900100005
F.Barao,R.Bayes,E.W.Beier,A.Bialek,S.D.Biller, 1465900100006
E.Blucher,R.Bonventre,M.Boulay,E.Caden,E.J.Callaghan, 1465900100007
J.Caravaca,D.Chauhan, M.Chen,O.Chkvorets,B.Cleveland, 1465900100008
M.A.Cox,M.M.Depatie,J.Dittmer,F.Di Lodovico,A.D.Earle, 1465900100009
E.Falk,N.Fatemighomi,V.Fischer,E.Fletcher,R.Ford, 1465900100010
K.Frankiewicz,K.Gilje,D.Gooding,C.Grant,J.Grove, 1465900100011
A.L.Hallin,D.Hallman,S.Hans,J.Hartnell,P.Harvey, 1465900100012
W.J.Heintzelman,R.L.Helmer,D.Horne,B.Hreljac,J.Hu, 1465900100013
A.S.M.Hussain,A.S.Inacio,C.J.Jillings,T.Kaptanoglu, 1465900100014
P.Khaghani,J.R.Klein,R.Knapik,L.L.Kormos,B.Krar, 1465900100015
C.Kraus,C.B.Krauss,T.Kroupova,I.Lam,B.J.Land,A.LaTorre,1465900100016
I.Lawson,L.Lebanowski,E.J.Leming,A.Li,J.Lidgard, 1465900100017
B.Liggins,Y.H.Lin,Y.Liu,V.Lozza,M.Luo,S.Maguire,A.Maio,1465900100018
S.Manecki,J.Maneira,R.D.Martin,E.Marzec,A.Mastbaum, 1465900100019
N.McCauley,A.B.McDonald,P.Mekarski,M.Meyer,C.Mills, 1465900100020
I.Morton-Blake,S.Nae,M.Nirkko,L.J.Nolan,H.M.O'Keeffe, 1465900100021
G.D.Orebi Gann,M.J.Parnell,J.Paton,S.J.M.Peeters, 1465900100022
S.J.M.Peeters,T.Pershing,L.Pickard,G.Prior,A.Reichold, 1465900100023
S.Riccetto,R.Richardson,M.Rigan,J.Rose,R.Rosero, 1465900100024
P.M.Rost,J.Rumleskie,I.Semenec,F.Shaker,M.K.Sharma, 1465900100025
K.Singh,P.Skensved,M.Smiley,M.I.Stringer,R.Svoboda, 1465900100026
B.Tam,L.Tian,J.Tseng,E.Turner,R.Van Berg,J.G.C.Veinot, 1465900100027
C.J.Virtue,E.Vazquez-Jauregui,S.C.Walton,J.Wang,M.Ward,1465900100028
J.J.Weigand,J.R.Wilson,P.Woosaree,A.Wright,J.P.Yanez, 1465900100029
M.Yeh,T.Zhang,Y.Zhang,K.Zuber,A.Zummo) 1465900100030
The SNO+ collaboration 1465900100031
INSTITUTE (1CANQU,1USAUCX,1USABRK,1CANALA,2PRTLIS,1USAPEN, 1465900100032
2UK OXF,1USACHI,2UK LVP,2GERDRE,2UK KCL,2UK SSX, 1465900100033
1USADAV,1USABST,1USABNL,1CANTMF,2UK QML,3MEXIFM, 1465900100034
3HUNDEB) 1465900100035
(2PRTPRT) Laboratory of Instrumentation and 1465900100036
Experimental Particle Physics,Lisbon 1465900100037
(1CANCAN)Laurentian University,Sudbury,Ontario 1465900100038
(1CANCAN) SNOLAB, Creighton Mine,Sudbury,Ontario 1465900100039
(1USAUSA) Norwich University,Northfield,Vermont 1465900100040
REFERENCE (J,PR/C,102,014002,2020) 1465900100041
FACILITY SNO+ is a multipurpose neutrino spectrometer located 1465900100042
at SNOLAB, Sudbury, Ontario, Canada 1465900100043
SAMPLE Pure water target was a part of active Cherenkov 1465900100044
detector volume 1465900100045
DETECTOR (CEREN) Pure water target was contained within a 5-cm- 1465900100046
thick acrylic vessel with a radius of 6.0 m, which is 1465900100047
submerged in water. Surrounding the vessel, a 1465900100048
geodesic structure with a radius of 8.9 m supports 1465900100049
more than 9300 Hamamatsu R1408 photomultiplier tubes 1465900100050
that face inward. Cherenkov light produced by 4.4 MeV 1465900100051
gammas (emmited in approx. 60% of neutron producing 1465900100052
reactions alpha+9Be -> 12C +n ) and 2.2 MeV produced 1465900100053
in p+n -> 2H were used in analysis. Trigger for the 1465900100054
event analysis was set to coincident pulses from 1465900100055
7 PMTs. Detector is located at SNOLAB, Creighton Mine, 1465900100056
Sudbury, 2.0 km underground. 1465900100057
METHOD (COINC) Delayed coincidence between 4.4 MeV and 2.2 1465900100058
MeV gamma rays was analysed 1465900100059
INC-SOURCE (AM-BE) Am-Be source used in experiment had a rate of 1465900100060
(67.4+-0.7) n/s. Source was doubly encapsulated in a 1465900100061
stainless steel cylinder of 0.8 cm diameter and 1.0 1465900100062
cm height and further shielded with black Delrin 1465900100063
thermoplastic encapsulation. Fully encapsulated 1465900100064
source was a cylinder of approximately 6 cm in 1465900100065
diameter and 8 cm in height. 1465900100066
ANALYSIS Neutron capture time constant was measured and 1465900100067
converted to thermal neutron proton capture cross 1465900100068
section 1465900100069
HISTORY (20200829C) Compiled by S.H. 1465900100070
ENDBIB 68 0 1465900100071
NOCOMMON 0 0 1465900100072
ENDSUBENT 71 0 1465900199999
SUBENT 14659002 20200829 14721465900200001
BIB 3 4 1465900200002
REACTION (1-H-1(N,G)1-H-2,,SIG) 1465900200003
ERR-ANALYS (ERR-SYS) Systematic uncertainty from temperature 1465900200004
variation and the impact of neutron energy spectrum 1465900200005
STATUS (TABLE) Data taken from p. 7 of the reference 1465900200006
ENDBIB 4 0 1465900200007
NOCOMMON 0 0 1465900200008
DATA 4 1 1465900200009
EN DATA +ERR-SYS -ERR-SYS 1465900200010
EV MB MB MB 1465900200011
0.0253 336.3 1.2 1.5 1465900200012
ENDDATA 3 0 1465900200013
ENDSUBENT 12 0 1465900299999
ENDENTRY 2 0 1465999999999