A new solution for mirror coating in γ-ray Cherenkov astronomy

  title={A new solution for mirror coating in $\gamma$-ray Cherenkov astronomy},
  author={Antonio Bonardi and Gerd P{\"u}hlhofer and S. Hermanutz and A. Santangelo},
  journal={Experimental Astronomy},
In the γ-ray Cherenkov Astronomy framework mirror coating plays a crucial role in defining the light response of the telescope. We carried out a study for new mirror coating solutions with both a numerical simulation software and a vacuum chamber for small sample production. In this article, we present a new mirror coating solution consisting of a 28-layer interferometric SiO2-TiO2-HfO2 design deposited on a glass substrate, whose average reflectance is above 90% for normally incident light in… 

Light-Trap: A SiPM upgrade for very high energy astronomy and beyond

  • D. GubermanJ. Cortina H Germany
  • Physics
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
  • 2018

Light-Trap: a SiPM upgrade for VHE astronomy and beyond

Ground-based gamma-ray astronomy in the Very High Energy (VHE, E > 100 GeV) regime has fast become one of the most interesting and productive sub-fields of astrophysics today. Utilizing the Imaging

Ground-based gamma-ray astronomy: history and development of techniques

Very high energy (VHE) $$\gamma $$ γ -rays constitute one of the main pillars of high energy astrophysics. Gamma-rays are produced under extreme relativistic conditions in the Universe. VHE $$\gamma

NUV-Sensitive Silicon Photomultiplier Technologies Developed at Fondazione Bruno Kessler

A review on the latest SiPM technologies developed at Fondazione Bruno Kessler, characterized by a peak detection efficiency in the near-UV and customized according to the needs of different applications, is presented.


Trojans are small bodies in planetary Lagrangian points. In our solar system, Jupiter has the largest number of such companions. Their existence is assumed for exoplanetary systems as well, but none

Singlet Oxygen Sensor Green is not a Suitable Probe for 1O2 in the Presence of Ionizing Radiation

Systemic experiments to determine the activation of SOSG in the presence of ionizing radiation show that the SOSG probe exhibits a pronounced fluorescence increase as a function of radiation dose delivered by gamma-rays as well as X-rays, in conditions where the formation of singlet oxygen is not expected.

Perception Evaluation: A New Solar Image Quality Metric Based on the Multi-fractal Property of Texture Features

The results show that with a high-resolution image as reference, the perception evaluation can give a robust estimate of the image quality for solar images in different scenarios.



Development of cold-slumping glass mirrors for imaging Cherenkov telescopes

The development of lightweight glass mirrors manufactured via cold-slumping technique for Imaging Atmospheric Cherenkov Telescope is presented. The mirror elements have a sandwich-like structure

Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

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 astronomy has a

Status of the CTA medium size telescope prototype

We present here the status of the medium size prototype for the Cherenkov Telescope Array. The main reasons to build the prototype are the test of the steel structure, the training of various

HESS II - Telescope Structure, Reflector and Drive System

The currently operating phase I of the imaging atmospheric Cherenkov telescope array H.E.S.S. consists of four telescopes, each with a 107 m2 reflector, which are arranged on the corners of a square

The MAGIC telescope

The key problem of Cherenkov Astronomy is to detect a weak signal from a point source embedded in an overwhelming but isotropic sea of noise events generated by Cosmic Rays. The enormous improvement

Optimization of TiO2 films prepared by reactive electron beam evaporation of Ti3O5

In this paper, we report the development of TiO2 films by reactive electron beam evaporation, using a recently introduced Ti3O5 material as the starting material. During experiments, considerable