Speaker
Igor Yashin
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
Description
The key advantage of the TAIGA gamma-ray observatory is a hybrid operation of wide-angle and narrow-angle detectors of the Tunka-HiSCORE and Tunka-IACT. The first IACT telescope of TAIGA project is under construction. The reflector of the telescope will have area of 10 m2 and a focus of 4.75 m. Imaging camera consists of about 540 PMT-based pixels with 0.36 degree field of view. Total FOV is 10x10 degrees. We describe construction of the camera and hardware of this telescope. For processing of signals from camera PMTs, the 64-channel board based on ASIC MACOC-3 was developed. The structure and basic characteristics of the MAROC3 chip are discussed. This 64-channel chip was designed to collect output signals from the 64-pixel multianode PMT. It contains a 12-bit Wilkinson ADC and provides production of a shaped signal proportional to the input charge, and 64 trigger outputs. Extension of the dynamic range of the camera read-out channels is ensured using two channels of MAROC3 chip for one PMT. The system includes local nodes for generating local trigger signals, control of analog-digital conversion, loading of MAROC3 chip configuration and an interface of an upper level system. The features of application of the system for atmospheric Cherenkov telescope are highlighted. Design of the TAIGA-IACT camera related with its operation in the hard Siberian winter conditions is presented and discussed as well.
| Registration number following "ICRC2015-I/" | 53 |
|---|---|
| Collaboration | -- not specified -- |
Author
Igor Yashin
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
