 Sun May 3 09:04:07 2015, J.L. Tain, J. Agramunt, G. Kiss, Summary of neutron measurements
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U: (Up: 2 RIKEN tubes at 40cm from AIDA)
D: (Down: 12 RIKEN tubes at 80cm from AIDA)
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Sun May 3 10:07:25 2015, J.L. Tain, J. Agramunt, G. Kiss, Photos of new PE shielding 
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| Photos of the general arrangement and details of the new PE blocks |
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Sun May 3 10:10:13 2015, J.L. Tain, J. Agramunt, G. Kiss, 94Se setting measurement
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94Se setting:
File: 150503_1500_1554_94Se.root
Rate per tube (n/s): U=0.966, D=0.263, US=0.538
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Tue May 5 05:04:00 2015, J.L. Tain, J. Agramunt, G. Kiss, Change of degrader thickness
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For EURICA measurements degrader thickness were increased
trying to decrease MACI and AIDA trigger rate
Before we had 5.7 mm of Al
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Tue May 5 05:17:36 2015, J.L. Tain, J. Agramunt, G. Kiss, Ambient background measurement
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Failure of a quadrupole triplet at BigRIPS (some time after earthquake)
We take the chance of measuring background:
File:
150504_1500_2047_bckg.root
Rate per tube (n/s): U=0.098, D=0.0062, US=0.0200
Ratio to 1st 110Zr: U=1.38, D=1.99, US=0.90
Notes:
-Compared to the
1st background measurement there are changes
larger than expected statistical fluctuations:
perhaps due to slight changes in noise
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Tue May 5 05:29:26 2015, J.L. Tain, J. Agramunt, G. Kiss, Ambient background measurement
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Beam still down. New background measurement
with new RIKEN tube below the MUSIC chamber
(call it B)
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Wed May 6 04:57:24 2015, J.L. Tain, J. Agramunt, G. Kiss, New degrader thickness
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| The Al degrader thickness was reduced to 4.8mm |
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Wed May 6 05:10:14 2015, J.L. Tain, J. Agramunt, G. Kiss, 94Se setting measurement
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After the long shutdown the beam is back at 00:30 (06/05)
Intensity is slightly lower 26pnA and somewhat unstable (short time)
Measurement in the morning:
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Wed Jul 20 16:50:12 2016, J.L. Tain, J. Agramunt, A. Tarifeņo, A. Tolosa, S. Go..., 252Cf
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Measurement of the 252Cf source at the central position
Efficiency and neutron-gamma correlations
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Wed Jul 20 17:18:59 2016, J.L. Tain, J. Agramunt, A. Tarifeņo, A. Tolosa, K. Gabor, S. Go, K. Matsui..., Electronics
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Measurement with preamplifiers after drying.
Amplifiers are brought back after ~12h and connected.
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Wed Jul 20 12:00:15 2016, J.L. Tain, J. Agramunt, A. Tarifeņo, A. Tolosa, ..., 252Cf
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Measurement with the source at the center
Listmode: 160719_BRIKEN_252Cf_009.dlt
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Wed Jul 20 17:05:59 2016, J.L. Tain, J. Agramunt, A. Tarifeņo, A. Tolosa, ..., Background
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Background measurement with remaining tubes (95) overnight
Listmode: 160719_2343_Bkg_*.dlt, Run: 031-044
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Thu May 7 08:36:56 2015, J.L. Tain, J. Agramunt, A. Estrade, G.Kiss, T. Davinson, C.Griffin, First BRIKEN_v.0 beta-delayed neutron correlations?
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During the 98,100Kr setting run we observe
in the time correlation plot (middle right panel)
of beta signals (marked by AIDA, with amplitude larger than ch=600)
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Wed Jul 20 08:58:13 2016, J.L. Tain, I.Dillman, R. Caballero, J. Agramunt, A. Tarifeņo, A. Tolosa, ..., Electronics
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Distribution of connections of tubes in preamplifiers and digitizers
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Sat May 2 03:52:14 2015, J.L. Tain, 3He tube description
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3He tube drawings and technical details:
RIKEN, UPC, GSI, ORNL-1, ORNL-2 |
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Sat Jul 9 20:44:31 2016, J.L. Tain, BRIKEN neutron detector
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START
Assembly and commissioning of BRIKEN neutron detector
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Sat Jul 9 21:00:54 2016, J.L. Tain, Hardware
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| A list of the available hardware |
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Sat Jul 9 21:08:08 2016, J.L. Tain, Neutron moderator
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| Drawings of the polyethylene neutron moderator and table assembly |
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Sat Jul 9 21:14:12 2016, J.L. Tain, 3He tubes
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| Drawings and specs of 3He tubes |
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Sat Jul 9 21:21:38 2016, J.L. Tain, 3He tubes
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| Tube distribution in the moderator, pre-amplifiers and digitizers |