Large Area X-ray Proportional Counter
AstroSat

Department of Astronomy & Astrophysics, TIFR

Launched on September 28, 2015


No. of LAXPC Detectors

Three (3) Identical units

Detector Size

120cm x 50cm x 70cm

X-ray detection volume

100cm x 36cm x 15cm

No. of Anode layers

5 anode layers each of 12 anode cell surrounded on 3 sides with Veto cells

Veto layers

46 anode cells each with cross-section of 1.5 cm x 1.5 cm arranged on three sides of X-ray detection cells

Collimator field of view

1o X  1o  for all the LAXPCs

Collimator Height

45 cm for WSC+FOV collimator

Counting Gas

Xenon + Methane

Gas Pressure

Two atmosphere (1520 torr)

Energy range

3-80 keV

Total Effective Area of 3 LAXPC Detectors

About 6000 cm2 in 5-20  keV

Total Weight of  LAXPC

414 Kg (Detector + Electronics)