Ginga Instruments

Scientific instrumentation of GINGA consists of the Large Area Counter (LAC), the All Sky Monitor (ASM), and the Gamma-ray Burst Detector (GBD).

The LAC, the main detector of GINGA, covers the energy range of 2-70 keV with an effective area of 4000 cm2. More details about the satellite and the instruments can be found at ISAS and NASA/GSFC.
For the LAC, please refer to Turner et al. (1989), PASJ 41, 345 and Hayashida et al. (1989) PASJ 41, 373.

The ASM experiment consists of two identical gas proportional counters operating in the energy range between 1-20 keV. Each detector is composed of three chambers that operate independently and provide each other with mutual anti-coincidence shielding. The instrument is subtended by six different collimators with a field of view of roughly 1 deg x 45 deg and covers about the 70% of the sky when the satellite rotates around the Z-axis. Each of the ASM chamber has a maximum effective area of about 70 cm2.
For more ditails on the ASM, please see Tsunemi et al. (1989) PASJ, 41, 291.

For the explanation of the GBD, please see Murakami et al. (1989), PASJ, 41, 405. As of 2019, GBD high-level products are not archived.

Last Modified: 01 February 2019