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A NECTAr-based upgrade for the Cherenkov cameras of the H.E.S.S. 12-meter telescopes
Terry Ashton, Michael Backes, Arnim Balzer +41
The High Energy Stereoscopic System (H.E.S.S.) is one of the three arrays of imaging atmospheric Cherenkov telescopes (IACTs) currently in operation. It is composed of four 12-mete…
Performance of the upgraded H.E.S.S. cameras
S. Bonnefoy, T. Ashton, M. Backes +37
The 14 years old cameras of the H.E.S.S. 12-m telescopes have been upgraded in 2015/2016, with the goals of reducing the system failure rate, reducing the dead time and improving t…
Hardware and software architecture of the upgraded H.E.S.S. cameras
S. Klepser, T. Ashton, M. Backes +37
In 2015/16, the photomultiplier cameras of the H.E.S.S. Cherenkov telescopes CT1-4 have undergone a major upgrade. The entire electronics has been replaced, using NECTAr chips for…
Performance measurement of HARPO: a Time Projection Chamber as a gamma-ray telescope and polarimeter
P. Gros, S. Amano, D. Attié +27
We analyse the performance of a gas time projection chamber (TPC) as a high-performance gamma-ray telescope and polarimeter in the ee pair creation regime. We use data coll…
NectarCAM, a camera for the medium sized telescopes of the Cherenkov Telescope Array
J-F. Glicenstein, M. Shayduk
NectarCAM is a camera proposed for the medium-sized telescopes of the Cherenkov Telescope Array (CTA) which covers the core energy range of ~100 GeV to ~30 TeV. It has a modular de…
First measurement of polarisation asymmetry of a gamma-ray beam between 1.74 to 74 MeV with the HARPO TPC
Philippe Gros, Sho Amano, David Attié +23
Current -ray telescopes suffer from a gap in sensitivity in the energy range between 100keV and 100MeV, and no polarisation measurement has ever been done on cosmic sources abov…
Cooling Tests of the NectarCAM camera for the Cherenkov Telescope Array
E. Moulin, C. Diaz, D. Durand +8
The NectarCAM is a camera proposed for the medium-sized telescopes in the framework of the Cherenkov Telescope Array (CTA), the next-generation observatory for very-high-energy gam…
A major electronics upgrade for the H.E.S.S. Cherenkov telescopes 1-4
G. Giavitto, T. Ashton, A. Balzer +31
The High Energy Stereoscopic System (H.E.S.S.) is an array of imaging atmospheric Cherenkov telescopes (IACTs) located in the Khomas Highland in Namibia. It consists of four 12-m t…
NectarCAM : a camera for the medium size telescopes of the Cherenkov Telescope Array
J-F. Glicenstein, O. Abril, J-A. Barrio +63
NectarCAM is a camera proposed for the medium-sized telescopes of the Cherenkov Telescope Array (CTA) covering the central energy range of ~100 GeV to ~30 TeV. It has a modular des…
HARPO: beam characterization of a TPC for gamma-ray polarimetry and high angular-resolution astronomy in the MeV-GeV range
Shaobo Wang, Denis Bernard, Philippe Bruel +23
A time projection chamber (TPC) can be used to measure the polarization of gamma rays with excellent angular precision and sensitivity in the MeV-GeV energy range through the conve…
HARPO: a TPC as a gamma-ray telescope and polarimeter
Denis Bernard, Philippe Bruel, Mickael Frotin +14
A gas Time Projection Chamber can be used for gamma-ray astronomy with excellent angular-precision and sensitivity to faint sources, and for polarimetry, through the measurement of…
The camera of the fifth H.E.S.S. telescope. Part I: System description
J. Bolmont, P. Corona, P. Gauron +54
In July 2012, as the four ground-based gamma-ray telescopes of the H.E.S.S. (High Energy Stereoscopic System) array reached their tenth year of operation in Khomas Highlands, Namib…
The Fermi Large Area Telescope On Orbit: Event Classification, Instrument Response Functions, and Calibration
LAT Collaboration
The Fermi Large Area Telescope (Fermi-LAT, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-en…
Design Concepts for the Cherenkov Telescope Array
The CTA Consortium
Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray…
The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
LAT Collaboration, W. B. Atwood
(Abridged) The Large Area Telescope (Fermi/LAT, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, hi…