EOSCOR III, a High Energy Solar Neutron Detector

1981 ◽  
Vol 28 (1) ◽  
pp. 875-879 ◽  
Author(s):  
Rokutaro koga ◽  
Glenn M. Frye ◽  
Brian V. Denehy ◽  
Owen Mace
Keyword(s):  
Neutron Detector ◽  
High Energy ◽  
Solar Neutron

scholarly journals New Solar Neutron Detector and Large Solar Flare Events of June 4th and 6th, 1991.

1995 ◽  
Vol 47 (11) ◽  
pp. 1073-1078 ◽  
Author(s):  
Y. Muraki ◽  
S. Sakakibara ◽  
S. Shibata ◽  
M. Satoh ◽  
K. Murakami ◽  
...  
Keyword(s):  
Solar Flare ◽  
Neutron Detector ◽  
Solar Neutron

scholarly journals Studying neutron structure at Jefferson Lab through electron scattering off the deuteron, using CLAS12 and the Central Neutron Detector

2020 ◽  
Vol 1643 (1) ◽  
pp. 012191
Author(s):  
Paul Naidoo ◽  
Daria Sokhan ◽  
Pierre Chatagnon ◽  
Silvia Niccolai ◽  
Katheryne Price
Keyword(s):  
Neutron Detector ◽  
Meson Production ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
High Energy ◽  
Neutral Meson ◽  
Deuteron Target ◽  
Jefferson Lab ◽  
3D Tomography ◽  
Large Acceptance

Abstract Generalised Parton Distributions (GPDs) offer a way of imaging nucleons through 3D tomography. They can be accessed experimentally in processes such as Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Production (DVMP), where a high energy electron scatters from a quark inside a nucleon and a high energy photon or meson is produced as a result. Jefferson Lab has recently completed its energy upgrade and Hall B houses the new, large-acceptance CLAS12 detector array optimised for measurements of DVCS and DVMP in the newly accessible kinematic regime. Measurements on the proton and neutron are complementary and both are necessary to facilitate access to the full set of GPDs and enable their flavour separation. Neutron DVCS and DVMP are possible with the use of a deuteron target – the first CLAS12 experiment with which has started taking data this year. To enable exclusive reconstruction of DVCS and neutral-meson DVMP, a dedicated detector for recoiling neutrons – the Central Neutron Detector (CND) – was integrated into CLAS12. We present the first CLAS12 deuteron-target experiment, with a focus on the performance of the CND.

Solar neutron flux in the energy range 20–160 MeV

1970 ◽  
Vol 48 (18) ◽  
pp. 2155-2161 ◽  
Author(s):  
C. Y. Kim
Keyword(s):  
Neutron Flux ◽  
Energy Range ◽  
Sunspot Number ◽  
Solar Flares ◽  
Energy Region ◽  
High Energy ◽  
The Sun ◽  
Solar Neutron ◽  
Nuclear Emulsions ◽  
The Difference

An attempt to measure the flux of high-energy solar neutrons was made by measuring the difference in flux from the direction of the sun and from the symmetrical direction about the zenith, using oriented nuclear emulsions flown by balloon on July 30, 1966 from Fort Churchill, Manitoba.An excess of (2.2 ± 2.5) × 10−2 neutrons cm−2 s−1 was observed from the direction of the sun in the energy region of 20–160 MeV. On the day of the flight the sunspot number was 63, and no major solar flares were reported.

scholarly journals Measurement by FIB on the ISS: Two Emissions of Solar Neutrons Detected?

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Y. Muraki ◽  
K. Koga ◽  
T. Goka ◽  
H. Matsumoto ◽  
T. Obara ◽  
...  
Keyword(s):  
Solar Flares ◽  
Neutron Detector ◽  
Space Shuttle ◽  
Space Station ◽  
Energy Spectra ◽  
Arrival Direction ◽  
Directional Information ◽  
Solar Neutron ◽  
New Type ◽  
First Time

A new type of solar neutron detector (FIB) was launched on board the Space Shuttle Endeavour on July 16, 2009, and began collecting data at the International Space Station (ISS) on August 25, 2009. This paper summarizes the three years of observations obtained by the solar neutron detector FIB until the end of July 2012. The solar neutron detector FIB can determine both the energy and arrival direction of neutrons. We measured the energy spectra of background neutrons over the South Atlantic Anomaly (SAA) region and elsewhere and found the typical trigger rates to be 20 and 0.22 counts/sec, respectively. It is possible to identify solar neutrons to within a level of 0.028 counts/sec, provided that directional information is applied. Solar neutrons were possibly observed in association with the M-class solar flares that occurred on March 7 (M3.7) and June 7 (M2.5) of 2011. This marked the first time that neutrons had been observed in M-class solar flares. A possible interpretation of the production process is provided.

THE GIANT FORBUSH DECREASE IN OCTOBER/NOVEMBER 2003: DATA ANALYSIS FOR THE SOLAR NEUTRON DETECTOR AT GORNERGRAT

2005 ◽  
Vol 20 (29) ◽  
pp. 6684-6686
Author(s):  
E. O. FLÜCKIGER ◽  
R. BÜTIKOFER ◽  
L. DESORGHER ◽  
M. R. MOSER ◽  
Y. MURAKI ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Initial Phase ◽  
Neutron Detector ◽  
High Speed ◽  
Forbush Decrease ◽  
Cosmic Ray ◽  
Solar Neutron ◽  
The Earth ◽  
Worldwide Network ◽  
Mass Ejection

In connection with the X17.2 flare on October 28, 2003, a coronal mass ejection was emitted at a high speed directly towards the Earth and caused a dramatic Forbush decrease (Fd) in the count rates of the worldwide network of ground-based cosmic ray detectors. During the initial phase of this Fd the ratios of the two Gornergrat solar neutron telescope particle channels (charged + neutral) and neutral show a step-like increase lasting about three days. This phenomenon is investigated based on Monte Carlo simulations of the cosmic ray cascades in the Earth's atmosphere and of the interactions of the secondary cosmic ray particles with the detector.

Seasonal redistribution of water in the surficial Martian regolith: Results from the Mars Odyssey high-energy neutron detector (HEND)

2007 ◽  
Vol 41 (2) ◽  
pp. 89-102 ◽  
Author(s):  
R. O. Kuzmin ◽  
E. V. Zabalueva ◽  
I. G. Mitrofanov ◽  
M. L. Litvak ◽  
A. V. Rodin ◽  
...  
Keyword(s):  
Neutron Detector ◽  
High Energy ◽  
High Energy Neutron ◽  
Energy Neutron ◽  
Martian Regolith ◽  
Mars Odyssey

scholarly journals The World Neutron Monitor Network as a tool for the study of solar neutrons

1997 ◽  
Vol 15 (4) ◽  
pp. 375-386 ◽  
Author(s):  
I. G. Usoskin ◽  
G. A. Kovaltsov ◽  
H. Kananen ◽  
P. Tanskanen
Keyword(s):  
Solar Flare ◽  
Neutron Monitor ◽  
Event Detection ◽  
High Energy ◽  
The Sun ◽  
Estimation Technique ◽  
Solar Neutron ◽  
The World

Abstract. The use of the World Neutron Monitor Network to detect high-energy solar neutrons is discussed in detail. It is shown that the existing network can be used for the routine detection of intense sporadic solar-neutron events whenever they occur. A technique is suggested involving the weighted summation of responses of separate monitors to solar neutrons. It is demonstrated that the use of this method improves the significance of solar-neutron event detection. Different results of the simulation of the neutron-monitor sensitivity to solar neutrons have been tested with respect to their application for practical use. It is shown that the total number of neutrons with energy above 300 MeV injected from the Sun during a solar flare can be estimated directly from the time-integrated neutron-monitor response to solar neutrons without any model assumptions. The estimation technique has been developed.

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