1. Using muon rings for the optical throughput calibration of the Cherenkov Telescope ArrayMarkus Gaug, Christopher Eckner, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2019, objavljeni znanstveni prispevek na konferenci Opis: Muon ring images observed with Imaging Atmospheric Cherenkov Telescopes (IACTs) provide a powerful means to calibrate the optical throughput of IACTs and monitor their optical point spread function. We investigate whether muons ring images can be used as the primary optical throughput calibration method for the telescopes of the future Cherenkov Telescope Array (CTA) and find several additional systematic effects in comparison to previous works. To ensure that the method achieves the accuracy required by CTA, these systematic effects need to be taken into account and minor modifications to the hardware and analysis are necessary. We derive analytic estimates for the expected muon data rates to be used for optical throughput calibration, monitoring of the optical point spread function, with achievable statistical and systematic uncertainties, and explore the potential of muon ring images as a secondary method of camera pixel flat-fielding.
Ključne besede: very-high-energy gamma-ray astronomy, Cherenkov Telescope Array (CTA) Observatory, Imaging Atmospheric Cherenkov Telescopes, IACT optical throughput calibration, IACT camera pixel flat-fielding, IACT optical point spread function (PSF), muon ring images
Objavljeno v RUNG: 13.11.2024; Ogledov: 638; Prenosov: 8
 Celotno besedilo (247,77 KB)
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2. Status and performance results from NectarCAM : a camera for CTA medium sized telescopesThomas Tavernier, Christopher Eckner, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2019, objavljeni znanstveni prispevek na konferenci Opis: The Cherenkov Telescope Array (CTA) will be the first ground-based observatory for gamma-ray astronomy. With more than a hundred of 4th generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) distributed in two large arrays, CTA will reach unprecedented sensitivity, angular resolution, and spectral coverage. Three classes of IACTs – 40 Medium-Sized Telescopes (MSTs), 8 Large-Sized Telescopes (LSTs) and 70 Small-Sized Telescopes (SSTs) – are required to cover the full CTA energy range (20 GeV to 300 TeV).
NectarCAM is a Cherenkov camera which is designed to equip medium sized telescopes of CTA, covering the central energy range from 100 GeV to 30 TeV, with a field of view of 8 degrees. It is based on a modular design with data channels using the NECTAr chip, which is equipped with both GHz sampling Switched Capacitor Array and 12-bit Analog to Digital Converter (ADC). The camera will comprise 265 modules, each consisting of 7 photomultiplier Tubes (PMTs) and a Front-End Board performing the data capture, sending the data over the Ethernet after the trigger decision at rates up to 10 kHz.
This contribution provides an overview of the status of the first NectarCAM camera currently under integration in CEA Paris-Saclay (France). Furthermore, we will discuss the calibration strategies and present performance results from the CEA Paris-Saclay test bench and from the first data taken under a real sky on the prototype of medium sized telescope (MST) structure in Adlershof (Germany).
Ključne besede: very-high-energy gamma-ray astronomy, Cherenkov Telescope Array (CTA) Observatory, Imaging Atmospheric Cherenkov Telescopes, medium-sized telescopes, NectarCAM IACT camera
Objavljeno v RUNG: 13.11.2024; Ogledov: 698; Prenosov: 7
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4. The first GCT camera for the Cherenkov Telescope ArrayA. De Franco, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, objavljeni znanstveni prispevek na konferenci Ključne besede: Cherenkov Telescope Array (CTA), small-size telescope (SST) design for CTA, dual-mirror (2M) Schwarzschild-Couder design, Gamma Cherenkov Telescope (GCT): SST-2M telescope design for CTA, imaging camera
Objavljeno v RUNG: 21.11.2016; Ogledov: 5509; Prenosov: 118
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5. The SST-1M camera for the Cherenkov Telescope ArrayE. J. Schioppa, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, objavljeni znanstveni prispevek na konferenci Ključne besede: very-high energy (VHE) gamma-ray astronomy, Cherenkov Telescope Array (CTA), small-size telescopes (SST) for CTA, Davies-Cotton design, imaging camera
Objavljeno v RUNG: 09.11.2016; Ogledov: 5424; Prenosov: 225
Celotno besedilo (5,72 MB) |
6. FlashCam: a fully-digital camera for the medium-sized telescopes of the Cherenkov Telescope ArrayG. Pühlhofer, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, objavljeni znanstveni prispevek na konferenci Ključne besede: Cherenkov Telescope Array (CTA), medium-sized telescopes (MST), imaging camera, FlashCam fully-digital readout system
Objavljeno v RUNG: 24.03.2016; Ogledov: 5893; Prenosov: 234
Celotno besedilo (1,78 MB) |
7. NectarCAM : a camera for the medium size telescopes of the Cherenkov Telescope ArrayJ-F. Glicenstein, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, objavljeni znanstveni prispevek na konferenci Ključne besede: Cherenkov Telescope Array (CTA), medium-sized telescopes (MST), imaging camera, NectarCAM design, NECTAr ASIC, Switched Capacitor Array
Objavljeno v RUNG: 24.03.2016; Ogledov: 5978; Prenosov: 239
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8. Development of the photomultiplier tube readout system for the first Large-Sized Telescope of the Cherenkov Telescope ArrayShu Masuda, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, objavljeni znanstveni prispevek na konferenci Ključne besede: Cherenkov Telescope Array (CTA), Large-Sized Telescope (LST), imaging camera, readout system
Objavljeno v RUNG: 24.03.2016; Ogledov: 5933; Prenosov: 368
Celotno besedilo (927,35 KB) |
9. Development of Slow Control Boards for the Large Size Telescopes of the Cherenkov Telescope ArrayDaniela Hadasch, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, objavljeni znanstveni prispevek na konferenci Ključne besede: Cherenkov Telescope Array (CTA), Large Size Telescopes (LST), imaging camera, slow control board (SCB)
Objavljeno v RUNG: 21.03.2016; Ogledov: 5590; Prenosov: 241
Celotno besedilo (4,05 MB) |
10. Prototyping of Hexagonal Light Concentrators for the Large-Sized Telescopes of the Cherenkov Telescope ArrayAkira Okumura, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, objavljeni znanstveni prispevek na konferenci Ključne besede: Cherenkov Telescope Array (CTA), Large-Sized Telescopes (LST), imaging camera, focal plane light concentrators
Objavljeno v RUNG: 21.03.2016; Ogledov: 5477; Prenosov: 212
Celotno besedilo (1,51 MB) |
