XPOL Solar Xray Polarimeter Rudawy P Sylwester J

X-POL Solar X-ray Polarimeter Rudawy, P. , Sylwester, J. , Zawistowski, T. , Siarkowski, M. , Bąkała, J. , Podgórski, P. , Kowaliński, M. and Gburek, S. Space Research Centre, Polish Academy of Sciences ul. Kopernika 11, Wroclaw , POLAND

Space Research Centre, Polish Academy of Sciences PURPOSE Understanding impulsive particle acceleration and plasma heating processes in the solar flares through X-ray polarimetry • • High energy- and time-resolution polarimetric observations Active regions Solar flares (non-stationary processes in flares; energy release and energy transport processes in solar flares) Impulsive acceleration of the non-thermal electrons Beam diagnostics Energy deposition in the solar chromosphere Temperature and differential emission measure studies (plasma diagnostics) Chemical composition of the coronal plasma;

Space Research Centre, Polish Academy of Sciences INSTRUMENT Detectors: Energy range: Energy resolution: Sensitivity: Orbit: Pointing: Lifetime: 4 CCD back-iluminated fully depleted soft X-rays 1. 86Å (Fe XXV), 3. 20Å (Ca. XIX), 4. 0Å (Ar. XVII) 104: 1 >C GOES class events Sun synchronous preferred, altitude: >500 and <800 km 2 -axes stabilization, detector axis pointed to +/-2º >3 years The overall size of the instrument is approx. : 32 cm x 26 cm Mass approx. 4 kg

Space Research Centre, Polish Academy of Sciences INSTRUMENT TOP VIEW UV-FILTERS & ENTRANCE CAPILLARY MESH PINHOLE SOLAR FLARE LOCATOR TWO-AXES ADJUSTABLE FRAME WITH THREE DETECTOR MODULES

Space Research Centre, Polish Academy of Sciences INSTRUMENT ENTRANCE CAPILLARY MESH COOLER CCD BENT CRISTAL TWO-AXES ADJUSTABLE FRAME WITH THREE DETECTOR MODULES

Space Research Centre, Polish Academy of Sciences INSTRUMENT Ar. XVII He-like triplet w x+y z

ENTRANCE CAPILLARY MESH MOTOR 2 MOTOR 1 CCD SOLAR FLARE LOCATOR TWO-AXES ADJUSTABLE FRAME WITH THREE DETECTOR MODULES

TWO-AXES SUSPENSION TWO-AXES ADJUSTABLE FRAME WITH THREE DETECTOR MODULES HEAT-BELT

Space Research Centre, Polish Academy of Sciences OUR HERITAGE • RF 15 -I X-ray spectrophotometer- Imager (Interball-Tail, 1995 -2000) PI • RESIK Bragg Bent crystal spectrometer 3 -6 Å (Coronas-F, 2001 -2003) PI in collab. NRL, RAL, IZMIRAN • Diogeness Bragg scanning spectrometer (Coronas-F, 2001) PI • Solar Photometer in X-rays (Sphin. X) (Coronas-Foton, 2009) PI, in collab. U. Palermo, AI CAS • Chemi. X (Inter. Helio. Probe, in prep. 2018) PI, in collab. IZMIRAN

Space Research Centre, Polish Academy of Sciences TWO BRAGG SPECTROMETERS CONSTRUCTED AT SRC WITH INTERNATIONAL COOPERATION RESIK - bent crystal spectrometer Diogeness - flat scanning crystal spectrometer

Space Research Centre, Polish Academy of Sciences RESIK RESULTS New X-Ray emission lines and continuum emitted by active solar corona successfully measured for the first time in the wavelength range 3. 3 – 6. 1 Å. Absolute abundance of argon determined for the first time for the Sun using direct spectroscopic tools. Similar results for S, Cl, K (series of Ap. J papers)

Sphin. X Space Research Centre, Polish Academy of Sciences SRC CONCEPT, DESIGN & MANUFACTURE Measures the X-ray emission of the Sun in the 0. 8 – 15 ke. V band with: – Time resolution ~10 μ s – Sensitivity 100 x better than GOES (the standard for 30+ years) – Energy resolution 3 x RHESSI (NASA) Principal aim: to record quiet-Sun level of emission

Chemi. X Space Research Centre, Polish Academy of Sciences SRC CONCEPT & DESIGN Basic Instrument parameters Mass: ~5 -6 kg Power consumption: ~10 W Size: 30 cm x 120 cm Telemetry: up to 12 k. B/s Specific instrument Characteristics Wavelength coverage: 1Å – 7 Å, Qartz and Si Spectral resolution : better than 0. 0005 Å Detectors: 3 CCD back illuminated & particle PIN Sensitivity: 1. 5 – 2 x RESIK, S/N: 10 x. RESIK Collimators: multi-grid, slit, Electronics: FPGA based

X-POL Solar X-ray Polarimeter Space Research Centre, Polish Academy of Sciences ul. Kopernika 11, Wroclaw , POLAND http: //www. cbk. pan. wroc. pl/