1. X-POL Solar X- ray Pol arimeter 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

2. 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

3. INSTRUMENT Space Research Centre, Polish Academy of Sciences Detectors:4 CCD back-iluminated fully depleted Energy range:soft X-rays 1.86Å (Fe XXV), 3.20Å (CaXIX), 4.0Å (ArXVII) Energy resolution:10 4 :1 Sensitivity:>C GOES class events Orbit:Sun synchronous preferred, altitude: >500 and <800 km Pointing: 2-axes stabilization, detector axis pointed to +/-2 º Lifetime:>3 years The overall size of the instrument is approx.: 32 cm x 26 cm x 26 cm Mass approx. 4 kg

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

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

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

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

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

9. OUR HERITAGE RF15-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 (SphinX) (Coronas-Foton, 2009) PI, in collab. U. Palermo, AI CAS ChemiX (InterHelioProbe, in prep. 2018) PI, in collab. IZMIRAN Space Research Centre, Polish Academy of Sciences

10. 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

11. 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. RESIK RESULTS Absolute abundance of argon determined for the first time for the Sun using direct spectroscopic tools. Similar results for S, Cl, K (series of ApJ papers) Space Research Centre, Polish Academy of Sciences

12. SphinX SRC CONCEPT, DESIGN & MANUFACTURE Measures the X-ray emission of the Sun in the 0.8 – 15 keV band with: – Time resolution ~10 μ s – Sensitivity 100 x better than GOES (the standard for 30+ years) – Energy resolution 3x RHESSI (NASA ) Principal aim: to record quiet-Sun level of emission Space Research Centre, Polish Academy of Sciences

13. ChemiX SRC CONCEPT & DESIGN Space Research Centre, Polish Academy of Sciences Basic Instrument parameters Mass: ~5 -6 kg Power consumption: ~10 W Size: 30cm x 30cm x 120cm Telemetry: up to 12 kB/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 xRESIK Collimators: multi-grid, slit, Electronics: FPGA based

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