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SLR STATION 7811 - MODERNIZATION

Data

Modernizacja

1988 134	Baseline system configuration: PMT FEU-87, PS-500 Timer, maximum likelihood discriminator B-6, 4ns/1Hz Nd:YAG laser, TV method+LORAN C synchronization with UTC, Rb-frequency standard, barometric pressure-mercury column, mount Az-El; separate trensmitting and receiving optics, diameter of main telescope-65 cm, controller computer MERA-400, ground target distance 1295.42 m
1990 298	PMT RCA-8852 replaced PMT FEU-87
1991 049	GPS time receiver for synchronization with UTC
1991 264	New 100ps/10Hz Nd:YAG laser, new real-time software
1992 273	New start detector-avalanche photodiode
1993 202	Rb-frequency standard for PS-500 Timer (elimination of large range bias!)
1994 271	PS-500-2 Timer replaced PS-500 Timer
1995 052	New controller computer PC-486, new real-time software, new tracking system
1995 213	Rb-2 frequency standard replaced Rb-standard
1997 034	PMT HAMAMATSU H5023 replaced PMT RCA-8852
1997 065	CCD camera installed
1997 077	cesium frequency standard replaced Rb-2 standard
1997 110	amplifier HAMAMATSU C5594 installed
1997 155	PMT RCA-8852 replaced HAMAMATSU H5023
1997 310	PMT HAMAMATSU H5023 replaced RCA-8852
1998 035	New ground target - distance 241.086 m
1998 139	Time Interval Counter STANFORD SR620 replaced PS-500-2
1998 182	VAISALA meteo sensors installed; pressure PTB200A (0.1 mbar), temp. and humidity HMP45D, + Time Interval Counter PS-500-2
2000 059	Etalon removed from laser, laser pulse width is shorter - 40 ps
2001 342	New time and frequency source - cesium frequency standard HP5071A ver.001; new camera CCD installed
2002 127	Time Interval Counter PS500-2 replaced by STANFORD SR620
2002 319	Time Interval Counter STANFORD SR620 replaced by STANFORD SR620B
2002 323	New start fast photodiode and discriminator TENNELEC 454 in start channel
2003 088	Discriminator B6 replaced by discriminator TENNELEC TC454 in stop channel