CAPER launchCAPER (Cleft Accelerated Plasma Experiment Rocket) Sounding Rocket

The CAPER sounding rocket experiment investigates how the cleft ion fountain originates. Specifically it will address the question of whether current-driven electrostatic waves are producing transverse ion acceleration within the cusp ion fountain.

The instrumentation is based on the SCIFER payload, but is redesigned to study current-driven instabilities. The experiment also employs ground support from the EISCAT radar at Svalbard to provide an ionospheric context and supporting measurements to test the "plasma friction" hypothesis in creating the cleft ion fountain.

CAPER was launched 1999 Jan 21 06:13:30 UT fromAndoya Rocket Range, Norway.


Cornell University: (more information)

University of Oslo:


Marshall Space Flight Center/Southwest Research Institute: (more information)

Payload layout drawing
UNH deck drawing
Payload picture

Flight data plots

Principal Investigator: