scholarly journals A compact instrument for gamma-ray burst detection on a CubeSat platform I

2021 ◽  
Author(s):  
David Murphy ◽  
Alexey Ulyanov ◽  
Sheila McBreen ◽  
Maeve Doyle ◽  
Rachel Dunwoody ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Effective Area ◽  
Low Earth Orbit ◽  
Directional Sensitivity ◽  
Mass Model ◽  
Silicon Photomultipliers ◽  
Gamma Ray Astronomy ◽  
3D Cad ◽  
Gamma Ray Spectrometer ◽  
One Year

AbstractThe Educational Irish Research Satellite 1 (EIRSAT-1) is a 2U CubeSat being developed under ESA’s Fly Your Satellite! programme. The project has many aspects, which are primarily educational, but also include space qualification of new detector technologies for gamma-ray astronomy and the detection of gamma-ray bursts (GRBs). The Gamma-ray Module (GMOD), the main mission payload, is a small gamma-ray spectrometer comprising a 25 mm × 25 mm × 40 mm cerium bromide scintillator coupled to an array of 16 silicon photomultipliers. The readout is provided by IDE3380 (SIPHRA), a low-power and radiation tolerant readout ASIC. GMOD will detect gamma-rays and measure their energies in a range from tens of keV to a few MeV. Monte Carlo simulations were performed using the Medium Energy Gamma-ray Astronomy Library to evaluate GMOD’s capability for the detection of GRBs in low Earth orbit. The simulations used a detailed mass model of the full spacecraft derived from a very high-fidelity 3D CAD model. The sky-average effective area of GMOD on board EIRSAT-1 was found to be 10 cm2 at 120 keV. The instrument is expected to detect between 11 and 14 GRBs, at a significance greater than 10σ (and up to 32 at 5σ), during a nominal one-year mission. The shape of the scintillator in GMOD results in omni-directional sensitivity which allows for a nearly all-sky field of view.

scholarly journals The Gamma-ray Large Area Space Telescope (GLAST)

2002 ◽  
Vol 187 ◽  
pp. 73-77
Author(s):  
Taro Kotani
Keyword(s):  
International Collaboration ◽  
Gamma Ray ◽  
Angular Resolution ◽  
Effective Area ◽  
Low Earth Orbit ◽  
Gamma Ray Bursts ◽  
Earth Orbit ◽  
Large Area ◽  
X Ray ◽  
Primary Instrument

AbstractGLAST, the next U.S. general gamma-ray astrophysics mission scheduled to be launched into low Earth orbit in April, 2006, for 5–10 years of operation, is described. A product of a NASA/DOE and international collaboration, the Large Area Telescope (LAT) is the primary instrument that covers the < 20 MeV to > 300 GeV band with an effective area > 8000 cm2. The angular resolution ranges from < 3.5° at 100 MeV to < 0.15° at 10 GeV. The GLAST Burst Monitor (GBM) consists of a group of NaI and BGO detectors to extend GLAST’s sensitivity to gamma-ray bursts to the < 10 keV to > 25 MeV band. GLAST’s localizations enables us to identify the X-ray, optical and radio counterparts of thousands of gamma-ray sources and to determine their nature.

scholarly journals A Complete Mission Concept Design and Analysis of the Student-Led CubeSat Project: Light-1

Aerospace ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 247
Author(s):  
Aaesha Almazrouei ◽  
Aaliya Khan ◽  
Abdullah Almesmari ◽  
Ahmed Albuainain ◽  
Ahmed Bushlaibi ◽  
...  
Keyword(s):  
United Arab Emirates ◽  
Electric Fields ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Thunderstorm Activity ◽  
Low Earth Orbit ◽  
Concept Design ◽  
Silicon Photomultipliers ◽  
Strong Electric Fields ◽  
Future Plans

Terrestrial gamma ray flashes (TGF) are intense and prompt bursts of X- and gamma-rays of up to 100 MeV of energy. Typically associated with thunderstorm activity, TGFs are produced by bremsstrahlung effects of electrons accelerated in strong electric fields generated by lightning. TGFs can be effectively targeted by gamma detectors with enhanced time stamping capabilities onboard of satellites operating at near-Earth low obits (LEO) [1]. Light-1 is a miniature satellite, a 3U CubeSat designed to detect, monitor and study terrestrial gamma ray flashes in low Earth orbit. The two payload detectors are composed of a photomultiplier tube and silicon photomultipliers. The two detectors are mounted at two ends of the CubeSat and the proposed orientation of the CubeSat will ensure maximum TGF detection probability. To allow an increased frequency of data downlink, Khalifa University has collaborated with NanoAvionics Corp, and hence Light-1 has access to three ground stations situated across the map, Abu Dhabi in United Arab Emirates, Vilnius in Lithuania, and Aalborg in Denmark. The satellite expected to launch in late-2021 is currently in its assembly and integration phase. This paper describes mission, concept, objectives, success criteria, design, analysis, status, and the future plans of Light-1 satellite.

scholarly journals The use of silicon photomultipliers for very high energy gamma ray astronomy: the optical issues

2012 ◽  
Vol 35 (3) ◽  
pp. 459-467
Author(s):  
A. Cadu ◽  
A. Le Padellec ◽  
K. Jradi ◽  
D. Pellion ◽  
A. R. Bazer-Bachi
Keyword(s):  
Gamma Ray ◽  
High Energy ◽  
Silicon Photomultipliers ◽  
Gamma Ray Astronomy ◽  
High Energy Gamma ◽  
Very High Energy ◽  
Energy Gamma ◽  
Very High

Science Missions of the Korean Lunar Exploration Program

2021 ◽  
Vol 30 (7/8) ◽  
pp. 3-10
Author(s):  
Joo Hyeon KIM
Keyword(s):  
Web Sites ◽  
Gamma Ray ◽  
Data System ◽  
Space Environment ◽  
Fluxgate Magnetometer ◽  
Science Data ◽  
Gamma Ray Spectrometer ◽  
Planetary Data System ◽  
One Year ◽  
Science Instrument

The Korea Pathfinder Lunar Orbiter (KPLO), which is the Korean first lunar and space exploration spacecraft, will be launched in August 2022 and arrive in a lunar orbit in December 2022. The KPLO will carry out nominal missions while in a lunar polar orbit an ~100-km altitude for one year. The KPLO has five lunar science mission payloads and one technology demonstration payload in order to achieve their own science and technology goals. The science payloads consist of four Korean domestic instruments and one internationally collaborated science instrument for scientific investigations on the lunar surface and in a space environment. The Korean dometstic science instruments are the gamma-ray spectrometer named KGRS, the wide-angle polarimetric camera named PolCam, the fluxgate magnetometer named KMAG, and the high resolution camera named LUTI. The name of the internationally collaborated science instrument is ShandowCam, which was developed by Arizona State University, U.S., and funded and managed by NASA. The science data acquired by the science payloads will be released to the public in order to enhance scientific and educational achievements. The science data acquired by each science instrument will be archived and released through the web sites of the KPDS (KARI Planetary Data System) for the Korean science instruments and the NASA PDS (Planetary Data System) for the internationally collaborated science instrument.

Elemental analysis of medicinal plants from different sites by instrumental neutron activation analysis

2016 ◽  
Vol 5 (03) ◽  
pp. 4892 ◽  
Author(s):  
Ratna Raju M.* ◽  
Madhusudhana Rao P. V. ◽  
Seshi Reddy T. ◽  
Raju M. K. ◽  
Brahmaji Rao J. S. ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Medicinal Plants ◽  
Neutron Activation ◽  
Gamma Ray ◽  
Elemental Content ◽  
Soil Composition ◽  
Gamma Ray Spectrometer ◽  
Instrumental Neutron Activation

A study was undertaken to evaluate the inorganic elements for humans in two Indian medicinal plants leaves, namely Sphaeranthus indicus, and Cassia fistula by Instrumental Neutron Activation Analysis (INAA). INAA experiment was performed by using 20 kW KAMINI Reactor at Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam. The emitted gamma rays were measured using gamma ray spectrometer. The concentrations of Al, Br, Ca, Fe, K, La, Mg, Mn, Na, Sc, V and Zn were determined in the selected medicinal plants. The medicinal leaves are using in treatment of various important ailments. The elemental content in selected medicinal leaves is various proportions depending on the soil composition, location of plant specimen and the climate in which the plant grows.

Real-time signal processing in field programmable gate array based digital gamma-ray spectrometer

2020 ◽  
Vol 91 (10) ◽  
pp. 104707
Author(s):  
Yinyu Liu ◽  
Hao Xiong ◽  
Chunhui Dong ◽  
Chaoyang Zhao ◽  
Quanfeng Zhou ◽  
...  
Keyword(s):  
Signal Processing ◽  
Real Time ◽  
Field Programmable Gate Array ◽  
Gamma Ray ◽  
Time Signal ◽  
Gamma Ray Spectrometer ◽  
Field Programmable ◽  
Gate Array ◽  
Real Time Signal Processing
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