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SS520-2 TSA

- Main
- Science Team
- Development Team

- Boom Vibration Test
- Boom Deployment Test
- Electrical Testing
- Vacuum Testing
- Integration Testing
- TSA Calibration

SS520-2 successfully launched Dec 04, 2000

TSA was flown on the Japanese SS520-2 sounding rocket. The SS520-2 mission was lead by the Institute of Space and Astronautical Science (ISAS). The launch, took place from the Norweigen SvalRak (79° N) launch facilities near Ny-Ålesund on the Svalbard Archipelago. Rocket launch information can be found near the bottom of this web page.


An improved version of the Nozomi Thermal Plasma Analyzer (TPA), TSA was designed to image mass and two-dimensional energy-angular distribution of ionospheric ions using a time-of-flight gate and a hemispherical-electrostatic analyzer. The instrument was designed and built at the U of C. Funding for the TSA project was provided by the Canadian Space Agency.

TSA Measurement Capabilities

  • Imaging of velocity distribution of thermal/supra thermal ions.
    • Mass-resolved, 2-D distribution at 20-ms resolution.
    • 0.5-20 eV/q, 1-100 AMU/q ions; all major ion species resolved.
  • Plasma parameter determination
    • Mass-resolved ion velocity in 2-D (20-ms resolution).
    • Mass-resolved ion density, temperature, 3-D velocity (½-spin resolution).
  • Specific objectives on SS520-2 rocket
    • Ion flow velocity in topside cleft ionosphere (below 1000 km apogee).
      • H+, He+, O+, NO+
      • spin-axis component: 20-ms resolution.
      • spin-plane component: 0.25-s (½-spin) resolution.

TSA Flight Model

ISAS Photo

TSA Photo Gallery:

TSA Boom Vibration Test (October 1999).

TSA Boom Deployment Test (May 2000).

TSA Assembly and Electrical Testing (January - July 2000).

TSA Vacuum Testing and Calibration (July - August 2000).

SS520-2 Integration Testing (August - October 2000).

TSA Calibration (September 2000).


Launch Info

The SS520-2 Rocket Launch Window was from 05:00 - 11:00 UT, started November 25 and was scheduled to run till December 10, 2000.

SS520-2 Booster being placed on the launch rail.

ISAS Photo
  • Nov 24 : Successful rehearsal of flight operations.
  • Nov 25 : Launch Attempt scrubbed due to adverse wind and auroral conditions.
  • Nov 26 : Launch Attempt scrubbed due to cloud cover at the supporting scientific ground stations.
  • Nov 27 : Launch Attempt scrubbed due to high winds.
  • Nov 28 : Launch Attempt scrubbed due to the cusp region being located at a lower latitude than the expected SS-520-2 trajectory. The geomagnetic conditions were too active.
  • Nov 29 : Launch Attempt scrubbed due to adverse upper winds.
  • Nov 30 : Launch Attempt scrubbed due to adverse upper winds (~1 km altitude) and cloudy at the scientific optical ground stations which are supporting the SS520-2 mission.
  • Dec 01 : Launch Attempt scrubbed due to adverse wind conditions.
  • Dec 02 : Launch Attempt scrubbed due to adverse weather (heavy snow fall) and poor auroral conditions.
  • Dec 03 : Launch Attempt scrubbed due to the cusp region constantly shifting in and out of the expected SS-520-2 trajectory.

  • Dec 04 : The SS520-2 rocket was successfully launched at 09:16 UT, reaching a maximum altitude of around 1040 km. According to telemetry, the TSA boom was deployed successfully, and HV was turned on normally. More details about the launch will be provided when available.

SS520-2 successfully launched Dec 04, 2000

ISAS Photo