Imaging proportional X-ray counter for HEAO.
Abstract
The HEAO-B Imaging Proportional Counter (IPC) is an X-ray imaging instrument designed for use in the High Energy Astronomy Observatory - Mission B (HEAO-B) X-ray Telescope. It measures the spatial location of individual X-ray photons by the risetime method and energy of photons by pulse height analysis. The IPC can locate photons in the energy range 0.2 to 4 keV to within 1 mm and provides 5 bits of energy level information. Each measured X-ray event is also time tagged with 7 bits of temporal data. The IPC also includes an in-flight-calibration source and uses a gas control system that maintains the counter gas density constant to an accuracy of 0.25 percent.
- Publication:
-
IEEE Transactions on Nuclear Science
- Pub Date:
- February 1978
- DOI:
- 10.1109/TNS.1978.4329346
- Bibcode:
- 1978ITNS...25..445H
- Keywords:
-
- Heao;
- Proportional Counters;
- Satellite-Borne Instruments;
- Spaceborne Telescopes;
- X Ray Telescopes;
- Automatic Test Equipment;
- Calibrating;
- Computer Techniques;
- Ground Tests;
- Signal Processing;
- Switching Circuits;
- Windows (Apertures);
- X Ray Imagery;
- Spacecraft Instrumentation;
- Telescopes:X Rays