1 / 17

Space missions

Explore the key technologies and instruments of the INTEGRAL payload, featuring IBIS Imager, SPI Spectrometer, JEM-X X-ray Monitor, and OMC Optical Monitor. Learn about detectors, calibration sources, and advancements in detector technology.

destiny-britt
Télécharger la présentation

Space missions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Space missions

  2. Sezione di Bologna INTEGRAL payload • INTErnational Gamma RAy Laboratory • - Range 15 keV - 20 MeV • - 4 strumenti • IBIS imager • SPI spettrometro • JEM X x-ray monitor • OMC optical monitor • lanciato il 17.10.2002, • operativo per le osservazioni • dal gennaio 2003 http://sci.esa.int/integral/

  3. Sezione di Bologna IBIS Collimatore Piano ISGRI Piano PICSIT PICsIT integrato in IBIS Struttura principale Moduli anti-coincidenza Maschera codificata a circa 3 m dal piano dei detectors 2 detectors layers: ISGRI 16384 CdTe detectors (CEA) area sensibile 2600 cm2 range 15 - 500 keV PICsIT 4096 CsI(Tl)-PD detectors (IASF-Bo) area sensibile 2890 cm2 range 180 keV - 20 MeV Anticoincidenza ( ), Fast Data Handling ( ), Calibration source ( ) Massa corpo centrale 380 kg dimensioni 940 x 940 x 850(h) mm

  4. Modulo del rivelatore PICsIT Pixel Montaggio elettronica ICARUS ASIC Assemblaggio pixel

  5. Egg-crate PD BIAS AFEE1 AFEE 2 Icarus ASIC Icarus ASIC DFEE board DFEE PICsIT modulo Pixel assembly

  6. PICsIT short history Design modulo 1996 Modulo di qualifica, 1999 Picco a 661 keV da 137Cs eventi singoli Prima luce piano PICsIT Ottobre 2002

  7. AGILE Italian satellite for g-ray astrophysics in the 20 MeV – 20 GeV range Bruno Rossi prize 2012 for the discovery of the Crab nebula g-ray variability • Mini Calorimeter (MCAL) • designed and tested at IASF Bologna • 30 CsI(Tl) bars with Photodiode readout • 1400 cm2 geometrical area • ~300 cm2 effective area @ 1 MeV • 330 keV – 100 MeV energy range • 14% energy resolution FWHM @ 1.3 MeV • 2 s timing accuracy in photon-by-photon mode • Clever, fully-programmable trigger logic on time scales from 8s to 16ms, 1ms and 300s 40 cm MCAL highlight: TGF detection above 40 MeV

  8. Detector technology developments

  9. Silicon Drift Detectors (SDD) technology development • SDDs (Gatti & Rehak, NIM A225, 1984): electricfieldmodulation inside the depletionregion by means of suitablypolarizedelectrodes P. Lechner et al., NIM A377, 1996 • Small collectinganode -> low output capacitance -> lowelectronicnoise -> higherenergyresolutionthan an equivalentp-i-n PD • Possibility to integrate first amplifying JFET directly on-chip: furthersignal-to-noise ratio improvement • Severaldimensions and design available, possibility to measuredrift time for position resolution, single devices or integrated arrays, possibility to couple to scintillators

  10. Single SDD / SDD matricesfor X-rays Single SDD with integrated JFET (by MPI HLL and PNSensor gmbh) SDDs matrix with external JFETs (design INFN TS, manufacturing FBK TN) Front-end electronics optimization

  11. SDD/CsI as an extended energy range detector (2 keV – 1 MeV) SDD scintillator • SDD coupled to CsI(Tl) crystal • X rays interacting in Si: fast pulse • g rays interacting in CsI: slow pulse • identification of the interaction by means of pulse shape discrimination (PSD) g X Si CsI efficiency in CsI SDD efficiency in Si Direct detection in Si Scintillation light detection Thresholds with PD readout Energy range overlap: ~100% efficiency Marisaldi, et al., IEEE Trans. Nucl. Sci., 51 (2004), 1916 Marisaldi, et al., IEEE Trans. Nucl. Sci., 52 (2005), 1842

  12. SDD monolithic array coupled to CsI(Tl) scintillator matrix • Use of detector arrays is mandatory for space applications • Use of SDD array (MEGA chip) procured from PNSensor gmbh in the frame of an Italian Space Agency (ASI) – financed R&D project X-ray spectrum C. Labanti et al., SPIE Proc. 2008 F. Perotti et al., SPIE Proc. 2008 g-ray spectrum

  13. Large Area SDDs for X-ray detection The ALICE @LHC heritage: 53cm2 SDD basic block for the Large Observatory For x-ray Timing (LOFT) ESA mission, currently in assessment phase Zampa et al., NIM A 633 (2011)

  14. Exploring new detector technologies:Single Photon Avalanche Diodes (SPAD) for space applications Cova, S. et al, Appl. Optics 35 (1996) • Double-side readout of scintillating fibers with SPAD as a possible element for next generation g-ray detectors • 500mm SPAD coupled to 3m long scintillating fibers successfully realized • >90% efficiency obtained in test beam with MIPs at CERN • Sensisitve to radiation damage, but still applicable in low inclination LEO (best for g-ray telescopes) Marisaldi et al., IEEE NSS Proc. 2011; Marisaldi et al., SPIE Proc. 2012

  15. Electronics developments

  16. ASIC development for SDD readout

  17. Test equipment for ASIC / SDD

More Related