X-POLSolar 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 Sciencesul. Kopernika 11, Wroclaw , POLAND

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

Space Research Centre, Polish Academy of Sciences

Detectors: 4 CCD back-iluminated fully depletedEnergy range: soft X-rays 1.86Å (Fe XXV), 3.20Å (CaXIX), 4.0Å (ArXVII)Energy resolution: 104:1 Sensitivity: >C GOES class eventsOrbit: Sun synchronous preferred, altitude: >500 and <800 km Pointing: 2-axes stabilization, detector axis pointed to +/-2ºLifetime: >3 years

The overall size of the instrument is approx.: 32 cm x 26 cm x 26 cm Mass approx. 4 kg

INSTRUMENT

Space Research Centre, Polish Academy of Sciences

TWO-AXES ADJUSTABLE FRAMEWITH THREE

DETECTOR MODULES

TOP VIEW

UV-FILTERS &

ENTRANCECAPILLARY MESH

PINHOLESOLAR FLARE

LOCATOR

Space Research Centre, Polish Academy of Sciences

TWO-AXES ADJUSTABLE FRAMEWITH THREE

DETECTOR MODULESBENTCRISTAL

CCD

COOLER

ENTRANCECAPILLARY MESH

INSTRUMENT

Space Research Centre, Polish Academy of Sciences

INSTRUMENT

w x+y z

ArXVII He-like triplet

ENTRANCECAPILLARY MESH

TWO-AXES ADJUSTABLE FRAMEWITH THREE DETECTOR MODULES

CCDSOLAR FLARE

LOCATOR

MOTOR 1

MOTOR 2

TWO-AXESSUSPENSION

HEAT-BELT

TWO-AXES ADJUSTABLE

FRAMEWITH THREE DETECTOR MODULES

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

TWO BRAGG SPECTROMETERS CONSTRUCTED AT SRCWITH INTERNATIONAL COOPERATION

RESIK - bent crystal spectrometerDiogeness - flat scanning crystal

spectrometer

Space Research Centre, Polish Academy of Sciences

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

SphinXSRC 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

ChemiXSRC CONCEPT & DESIGN

Space Research Centre, Polish Academy of Sciences

Basic Instrument parametersMass: ~5 -6 kg

Power consumption: ~10 WSize: 30cm x 30cm x 120cm

Telemetry: up to 12 kB/s Specific instrument Characteristics

Wavelength coverage: 1Å –7 Å, Qartz and SiSpectral resolution : better than 0.0005 Å

Detectors: 3 CCD back illuminated & particle PINSensitivity: 1.5 –2 x RESIK, S/N: 10 xRESIK

Collimators: multi-grid, slit, Electronics: FPGA based

X-POLSolar X-ray Polarimeter

Space Research Centre, Polish Academy of Sciencesul. Kopernika 11, Wroclaw , POLAND

http://www.cbk.pan.wroc.pl/