Program - Brookhaven National Laboratory

thus for the second time after the coupled publication of AME2003 and NUBASE2003 evaluations. Since
the publication of NUBASE2003 a wealth of new information has been gained experimentally, enriching
significantly NUBASE2012 and giving new insight in nuclear structure. At this conference, I will present
the most important new features brought by NUBASE2012. The new policies and adopted procedures in
NUBASE2012 will also be presented.
[1] G.Audi et al., Nucl.Phys. A624, 1 (1997) [2] G.Audi et al., Nucl.Phys. A729, 3 (2003)
PR 27
MicroMegas Detectors Development for Measurements at Neutron Time of Flight Facilities
E. Berthoumieux, on behalf of the n TOF Collaboration, CERN, Geneva (Switzerland) and CEA, Saclay
(France).
Thanks to its high versatility, ease of use and very good transparency to neutron, the MicroMegas detector
concept is perfectly suited for measurements at neutron beam line facilities. At n TOF these kind of
detectors have been used for:
• neutron flux determination [this conf C. Guerrero]
• (n,p) and (n,a) cross section measurement [this conf J. Praena],
• neutron induced fission cross section measurement [this conf A. Tsinganis]
• neutron beam profile measurement [this conf F. Belloni],
• fission tagging to discriminate gamma from fission and from capture [this conf D. Cano-Ott].
Large area single pad detectors and its associated electronics have been developed for the first 3 here above
mentioned kinds of measurements. Two different types of detectors have been developed for the neutron
beam profile measurement. The first one consist in a highly segmented pad detectors connected by two
series of stripes and the second one is a pixel detector. The readout of this two detectors is multiplexed
by using Gassiplex cards. Finally a compact detector assembly has been developed in order to be installed
inside the n TOF Total Absorption Calorimeter (TAC) in view to study prompt gamma from fission and
alpha ratio determination. After a brief introduction about the MicroMegas concept and in particular the
microbulk technology, the characteristics and performance of the various detectors will be given.
PR 28
Energy Scale Calibration and Off-Line Gain Stabilization of Scintillation Neutron Detectors
N.V. Kornilov, T.N. Massey, S.M. Grimes, D. Sayer, C.E. Brient, D. E. Carter, J.E. O’Donnell,,
Department of Physics and Astronomy, Ohio University, Athens, OH 45701, USA. F.B. Bateman, A.D.
Carlson, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA. R.C. Haight,
Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, USA. N.
Boukharouba, Department of Physics, University of Guelma, Guelma 24000, Algeria.
The energy scale calibration (possible non-linearity effects) of a neutron detector and maintaining its stable
operation during the rather long time between the efficiency measurement and the detector application
is very important for realization of high accuracy in neutron experiments. We report the result of our
present investigation of a NE213 liquid scintillation detector (12.7 cm diameter, 5.08 cm depth) in this
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