Space Research Institute

Space Research Institute

BMSW - Fast Monitor of Solar Wind Plasma Parameters for current and future missions.

M. Riazantseva1,2, G. Zastenker1, J. Safrankova3, Z. Nemecek3, L. Prech3

1- Space Research Institute, Russian Academy of Sciences2- Skobeltsyn Institute of Nuclear Physics of Moscow State University

3- Charles University in Prague, Czech Republic

Contact person: Maria Riazantseva [email protected] Zastenker [email protected]

Meeting on Solar Wind Turbulence, Kennebunkport, June 4-7, 2013

Space Research Institute

BMSW on the future mission: Strannik; Luna-Glob ; Interheliozond; Venera-D

fast plasma and energetic particle measurements;

3D electric and magnetic field measurements,

Single spacecraft Outer magnetosphere orbit

(apogee 25-30 Re)The tasks: Plasma turbulence up to electron scales Thin boundaries and transient processes

The mission is open for collaboration!Contact person: Anatoli Petrukovich [email protected]

Strannik “Piligrim” is the fast-track cheap mission relying on heritage of previous projects (combination of PLASMA-F and Resonance instruments).

Approved by Russian Space Agency, currently in payload definition phase.

Strannik “Piligrim” - the nearest mission (launch ~2016):

Experiment “Plasma-F” on spacecraft “Spectr-R”

Turbulence in solar wind and magnetosheath Fine structure of energetic particle acceleration

Time resolution up to 32 Hz

2011

Space Research Institute

BMSW – solar wind flow parameters (faraday cups)Russia, Czech republic, Kyrgyzstan, China

MEP – energetic particles(Si-detectors 20-1000 keV)Slovakia, Russia, Greece

SSNI-2 – onboard data handling (100 GB)

launched July 2011

BMSW instrument on SPECTR-R

(current mission)

Measurements of: - Solar wind ion flux value and direction (time resolution 30 ms) -Plasma solar wind parameters in swept mode (most of the time) : proton density , bulk speed, temperature, Alfa particles/proton ratio ( resolution 3 s) -Plasma solar wind parameters in adaptive mode (separate time intervals): proton density, bulk speed and temperature (resolution 30 ms)

BMSW instrument. Fast monitor of solar wind plasma parameters. Objectives of the study: -Turbulence in solar wind and magnetosheath on ion dissipation scale-Investigation of small scale discontinuities in the solar wind and magnetosheath-Investigation of fine structures of fronts of discontinuities (for example shock)

Typical energetic spectrum distribution (BMSW, SPECTR-R)

Curr

ent o

n co

llect

or

Voltage on control gridVp

TpAlfa particles

adaptive mode

The main principe of the BMSW instrument and features of the «new» BMSW

C2, C4 – grounding grid; C3 – control grid; C1 – suppressor grid

Collector

Sensor – Faraday cap idea of the two part collectors

laboratory sample of the new sensor DP-10-34.

All the sensors are identical and directed along the axis of the device oriented to the sun.Sensors have collectors cut into two parts (one sensor can measure the direction of the flux in one plane). It provides flexibility, reservation and possibility to intercalibrate sensors in flight.Sensors are united in pairs (one pair - for measuring ion flux vector (magnitude and two angles with time resolution 30 ms), the second - for sweeping mode (measurements of full energetic spectrum, and Np, Vp, Tp, Na/Np with time resolution 1.5 s), the third - for adaptive mode (measurements of Np, Vp, Tp with the highest time resolution 30 ms)). Sensors will have wider angle diagrams ± 60. new BMSW will consist of two types of blocks – main and additional (to have the possibility to measure the particle from the direction not to the Sun ).new BMSW will be almost identical for all projects.