Pavel Travnicek, Petr Hellinger,Stepan Stverak, David HerčíkZdenek Kozacek, Jan Brinek

Astronomical Institute, ASCR,Institute of Atmospherics physics, ASCRCzech Space Research Centre and SPRINX systems

● team heritage

● collaboration on SCM preamplifier for balloon flight with UCB

● I/V converters for DEMETER Langmuir probe (ISL)

● prototype of a search coil magnetometer

● Dual Segmented Langmuir Probe experiment onboard PROBA2 satellite

● long heritage in numerical simulations

● solar wind interaction (Mercury, Moon, Enceldus, ...)

● basic plasma physics (instabilities, waves)

Introduction

Uppsala RPWI meeting 26-27.11.2009

Dual Segented Langmuir Probe (DSLP)

Uppsala RPWI meeting 26-27.11.2009Uppsala RPWI meeting 26-27.11.2009

● DSLP consists of two identical sensors mounted on a solar panel with DPU inside the S/C

● the sensors are spheres 4cm in diameter with seven independent disk shaped segments

● three basic modes● bias sweep● potential measurement● E-field measurement

● DSLP accommodated onboard PROBA2

● PROBA2 successfully launched on 2.

November 2009

● currently in commissioning phase

● operational phase starting in February

● DSLP already switched on during

commissioning

● performing as expected

● data already available

Dual Segented Langmuir Probe (DSLP)

Uppsala RPWI meeting 26-27.11.2009

3

Search coil magnetometer development

● preamplifier and one axis sensor coil with a ferrite core

● two different types of preamplifier tested

● FET

● bipolar

● various coils wound

SCM design

Uppsala RPWI meeting 26-27.11.2009

Search coil magnetometer development

Preamplifier

● first design developed in

collaboration with UCB for balloon

flights

● further various modifications tested

● final version with current amplifier

configuration

Uppsala RPWI meeting 26-27.11.2009