1. Sofia_SIRAD_LAZIO

2. Sofia_SIRAD The first variant of apparatus Sofia_SIRAD for on board of ISS investigations mechanical structure was design; The first variant of apparatus Sofia_SIRAD for on board of ISS investigations mechanical structure was design; The prototype of small size power supply for space instrument operating on the Russian Segment of ISS was produced; The prototype of small size power supply for space instrument operating on the Russian Segment of ISS was produced; The trigger system on base of plastic scintillation counters as mechanical design as electronic scheme was developed and produced; The trigger system on base of plastic scintillation counters as mechanical design as electronic scheme was developed and produced; Preliminary software algorithms was developed; Preliminary software algorithms was developed;

3. The prototypes of small size power supply and trigger system

4. Small size power supply for operating on the Russian Segment of ISS 3 plastic scintillation counters Electronics of trigger system PC-104 tower AC/DC converter for ground work

5. LAZIO The mechanical structure design of apparatus LAZIO detectors for investigations on board of ISS was developed; The mechanical structure design of apparatus LAZIO detectors for investigations on board of ISS was developed; The small dimension power supply for LAZIO detectors was developed The small dimension power supply for LAZIO detectors was developed Three scintillation detectors on base of photomultipliers HP6780 and front-end electronics was developed; Three scintillation detectors on base of photomultipliers HP6780 and front-end electronics was developed; Two scintillation detectors on base of photodiodes (SiPM) and front-end electronics was developed; Two scintillation detectors on base of photodiodes (SiPM) and front-end electronics was developed; The trigger system of apparatus LAZIO was developed; The trigger system of apparatus LAZIO was developed; 16 tiles (plastic scintillator+shifter and photodiode) was produced 16 tiles (plastic scintillator+shifter and photodiode) was produced

6. Apparatus LAZIO

7. Design of LAZIO scintillation detectors SC1&3+SiPM H6780 160 30 50 5 Area of mechanical connection 15 5 135 30 10 5 Distributor board 10 60 A View A 70 90 45 190 280 45 SC1&3+SiPM Tiles

8. SiPM Silicon Photomultiplier (SiPM) The SiPM consists of the array (matrix) of p-n-junctions (~103 mm -2 ) joint together on a common silicon substrate. Each p-n-junction working in limited Geiger mode with a gain 106, but SiPM in whole is analogue detector, because the SiPM output signal is a sum of the signals from p-n-junctions fired by photons Comparison of characteristics vacuum and SiPM CharacteristicsPMSiPM 1.Efficeincy % 470 nm 590 nm 670 nm 20 7-15 < 1 18 17 13 2. Gain factor10 6 - 10 7 10 6 3. Noise-factor1,3-4.01.1-1.3 4. Threshold sensitivity (S/N) 11 5. Time jitter, psec~10030 6. Bias voltage Volts 1000-200050-100

9. SiPM + Plastic scintillator = Tile Tile: Plastic scintillator 3x3x0.5 cm 3 Shifter SiPM