Georgy Lukyanchenko
(NRC Kurchatov Institute)
07/10/2015, 15:00
Nuclear physics and particle physics
For large volume neutrino and antineutrino detectors it is crucial to have an efficient data acquisition system capable of digitizing data from thousands of detection channels. Here we present a flexible DAQ system architecture consisting of large number of fast waveform digitizers and configurable FPGA-based trigger logic. Current implementation of the system is functioning in the Borexino...
Mr.
Pavel Naumov
(MEPhI)
07/10/2015, 15:15
Nuclear physics and particle physics
The system for forming a trigger for the RED-100 liquid xenon detector has been developed. The trigger can be generated for all types of events required to calibrate the detector and data acquisition, including events with one ionization electron. The system has an event detection mechanism where each event is assigned with the timestamp and event type. The trigger system is required in the...
Dr.
Dmitry Akimov
(ITEP and MEPhI)
,
Mr.
Grigory Simakov
(ITEP)
07/10/2015, 15:30
Nuclear physics and particle physics
Krypton-85 is a technogenic beta-radioactive isotope which produces background in a low-energy region in dark matter and neutrino detectors: in noble gas detectors, especially in liquid Xenon detectors, in organic liquid scintillator detectors.
We propose a new method of reduction of the 85Kr isotope in a detector medium based on adding to the detector medium a Krypton sample depleted of the...
Alexey Konovalov
(MEPhI/ITEP)
07/10/2015, 15:45
Nuclear physics and particle physics
We describe basic principles of electron emission in two-phase xenon and discuss possible ways of spontaneous electron emission. We present a brief summary of experimental results connected to single electron emission including the recent one obtained by the authors. The results of study seem to confirm the hypothesis, that single electron signals originate from the cloud of ionization...
Mr.
Aleksey Shakirov
(MEPhI)
07/10/2015, 16:00
Nuclear physics and particle physics
A cryogenic system based on a two-phase closed tubular thermosyphon with 12 mm diameter copper tube is developed. It was used for thermal stabilization of the liquid xenon emission detector RED-100. The nitrogen refrigerant cooled down with a free-boiling liquid nitrogen bath has been used. It was shown that the system supports the RED100 operation at temperature 166 K with accuracy ±1К.
Mr.
Yury Melikyan
(NRNU MEPhI)
07/10/2015, 16:15
Nuclear physics and particle physics
The two-phase cryogenic xenon emission detector RED100 is planned to be equipped by 38 Hamamatsu R11410-20 photomultiplier tubes, which are claimed to be operable at cryogenic temperatures and made of extremely low background materials.
A thorough characterization procedure has been carried out for each PMT unit to be installed to the detector. The main results obtained are presented here,...
