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Electronics and Software for Quantum Astronomy Progress Report

Quantum Astronomy Meeting in Bled. Electronics and Software for Quantum Astronomy Progress Report. Tommaso Occhipinti , Claudia Facchinetti, Andrea Dipaola, Paolo Zoccarato, Ivan Capraro, Sergio Billotta, Massimiliano

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Electronics and Software for Quantum Astronomy Progress Report

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  1. Quantum Astronomy Meeting in Bled Electronics and Software for Quantum AstronomyProgress Report Tommaso Occhipinti, Claudia Facchinetti, Andrea Dipaola, Paolo Zoccarato, Ivan Capraro, Sergio Billotta, Massimiliano Belluso, Giovanni Bonanno, Pietro Bolli, Filippo Messina, Cesare Barbieri, Sandro Centro Bled, Slovenia, 26 March 2008

  2. Outline • Overview • Macro Blocks descriptins • EquA: Electronics for quantum Astronomy • ATFU: Asiago Time and Frequency Unit • HARRISON prj • QUAS: Quantum Astronomy Software tommaso.occhipinti@dei.unipd.it, Univ Padova

  3. Overall Scheme ATFU AquEYE Time and Frequency Unit EQuA Electronics for Quantum Astronomy Optics Telescope, Optical AquEYE and Detectors Mass Storage QuAS Quantum Astronomy Software Scientific DATA tommaso.occhipinti@dei.unipd.it, Univ Padova

  4. AquEYE Time & Frequency Unit (ATFU) Overview of the System Max output rate = 10 Mhz Typical rate = 100 Khz SPAD precision = 30 ps TDC PC Controller 0 SPAD 0 1 VME Optical Bridge 2 3 SPAD 3 DATA BUS External ref. (input) Oscillator OCXO TCXO RUBIDIUM External Storage 10 Mhz clock (output) GALILEO Receiver tommaso.occhipinti@dei.unipd.it, Univ Padova

  5. EquA Design EQuA Electronics for Quantum Astronomy Caen TDC Board Backup Couters PC Control & Storage tommaso.occhipinti@dei.unipd.it, Univ Padova

  6. EQuA Electronics for Quantum Astronomy tommaso.occhipinti@dei.unipd.it, Univ Padova

  7. EquA Design EQuA Electronics for Quantum Astronomy Optical fiber connected to a PCI board in the PC • Dual Core • 2 SATA 250G • 1 Ex TERA USB2 tommaso.occhipinti@dei.unipd.it, Univ Padova

  8. EquA: Data BandW Limitation EQuA Electronics for Quantum Astronomy Incoming PULSE/s Readout Rate EQuA Electronics for Quantum Astronomy 8 MHz But we are reaching 10 Mhz 60 Mbytes/s tommaso.occhipinti@dei.unipd.it, Univ Padova

  9. EquA: OP MODES EQuA Electronics for Quantum Astronomy • Continuous Storage • From max count rate to 100 KHz • The rollover can be compensated by software • Trigger Matching • From 100 KHz to 0 • Infinite measurement • The rollover of the Triggers can be compansated by software tommaso.occhipinti@dei.unipd.it, Univ Padova

  10. EquA: Aquisition Strategy and Performance EQuA Electronics for Quantum Astronomy • Sw structure is multi-thread optimized to allow simultaneous read-out, statistics calculations and disk storage • On the dual-core CPU, with careful priorities setup, one core takes care of read-out and the other of statistics and storage in real time • A new firmware has been installed into TDC board: new performance – • VME: Readout rate: ~ 60Mbyte/s, each hit data is written in a 32bit line • the FIFO size is 32kx32bit: 60Mbyte s-1/4byte=15MHz → Upper limits of read-out data from FIFO buffer. • On single channel (working with 4 channel) is 15MHz/4= ~8 Mhz tommaso.occhipinti@dei.unipd.it, Univ Padova

  11. EquA: User Options EQuA Electronics for Quantum Astronomy • The general approach is to simplify as much as possible astronomers work by masking the complexity of the system. • Options: acquisition mode, internal pulser, raw data output format, exposure time - read only, object name, fix the output file size • The command-line nature of the acquisition s/w allows the usage through telnet or SSH tommaso.occhipinti@dei.unipd.it, Univ Padova

  12. EquA: Output files EQuA Electronics for Quantum Astronomy • The system supports two formats : raw data and FITS (binary table) • The FITS format provides data using time relative to acquisition start and channel index for each hit. • Raw data is a temporary format that allows system debugging tommaso.occhipinti@dei.unipd.it, Univ Padova

  13. EquA: Control and debugging information EQuA Electronics for Quantum Astronomy • Software is controlled by TXT configuration files containing H/W working parameters • S/W produces TXT LOG files that permanently report details, events and warning messages • FITS header are user configurable by mean of ascii templates tommaso.occhipinti@dei.unipd.it, Univ Padova

  14. ATFU AquEYE Time and Frequency Unit tommaso.occhipinti@dei.unipd.it, Univ Padova

  15. ATFU System ATFU AquEYE Time and Frequency Unit 10 MHz Sinusoidal 10 MHz TTL Sinusoidal to TTL converter built in Catania FPGA 10 MHz to 40 MHz converter projected by Massimiliano Belluso SRS FS725 Rubidium Frequency Standard V976 Regenerate the signal 40 MHz TTL 40 MHz TTL 40 MHz TTL CAEN VME CRATE with V2718, V976 and V1290N V1290N tommaso.occhipinti@dei.unipd.it, Univ Padova

  16. PPS to the TDC ATFU AquEYE Time and Frequency Unit OCXO ATFU AquEYE Time and Frequency Unit ATFU 40 MHz TTL 1 PPS TTL 1 PPS TTL 1 PPS NIM Mini-T Trimble Disciplined OCXO tommaso.occhipinti@dei.unipd.it, Univ Padova

  17. ATFU Tests ATFU AquEYE Time and Frequency Unit • We tested several jitters/precision: • 10Mhz • 40Mhz • 1PPS • 20Khz At the moment: 300ps for the overall system in the 40 Mhz chain We can IMPROVE! tommaso.occhipinti@dei.unipd.it, Univ Padova

  18. ATFU ATFU AquEYE Time and Frequency Unit • Paolo Zoccarato contribution … tommaso.occhipinti@dei.unipd.it, Univ Padova

  19. ATFU: HARRISON PRJ ATFU AquEYE Time and Frequency Unit • Harrison prj will give us, both Padova and Ljubljana, TWOACTS (Accurate and Certified Time System) units for all the month of OCTOBER 2008 2 GPS Antennas 10 Mhz 40 Mhz 20 Khz PPS signals NTP Signal on ETH ACTS POWER INTERNET tommaso.occhipinti@dei.unipd.it, Univ Padova

  20. ACTS - AQUEYE I/O ATFU AquEYE Time and Frequency Unit ACTS PPS 40MHz/ECL 20KHz/NIM ETH/RS232 tommaso.occhipinti@dei.unipd.it, Univ Padova

  21. ATFU: HARRISON TODO ATFU AquEYE Time and Frequency Unit • In Padua and Ljubljana will arrive ACTS (Thales Alenia Space Italy, TASI) 3 days before the observations • TASI people will need: • Power, External internet, accessibility to the roof for the installation of the TWO antennas • They will take 1 day after the observation for the ACTS removal • We have to decide a SCHEDULE of observations • We have to decide the possible utilizations of ACTS as it is a very accurate and stable machine. • Common measurements with NTP???? tommaso.occhipinti@dei.unipd.it, Univ Padova

  22. QuAS Quantum Astronomy Software tommaso.occhipinti@dei.unipd.it, Univ Padova

  23. QUAS QuAS Quantum Astronomy Software • A matlab compilation of scripts • …moving to C++ and QT libs for GI QuAS Quantum Astronomy Software N(t) c(t)  g2(t) PSD Hist of N(t) Hist of DIFFs … FILEs: .TXT .DAT .FITS tommaso.occhipinti@dei.unipd.it, Univ Padova

  24. The first light of AquEYE QuAS Quantum Astronomy Software 2 October 2007 tommaso.occhipinti@dei.unipd.it, Univ Padova

  25. Other Results QuAS Quantum Astronomy Software • ZZ Pesci – Long period (about 800 s) tommaso.occhipinti@dei.unipd.it, Univ Padova

  26. One important result QuAS Quantum Astronomy Software • The Crab Nebula Optical Pulsar tommaso.occhipinti@dei.unipd.it, Univ Padova

  27. QUAS: examples small dt QuAS Quantum Astronomy Software G2(t) Cross Correlation PSD Histogram of N(t) Rate of each channel PSD of each channel tommaso.occhipinti@dei.unipd.it, Univ Padova

  28. CRAB PPS compensation (working on) First 50 s of the measurement … after about 1 our tommaso.occhipinti@dei.unipd.it, Univ Padova

  29. Questions? View from the Ekar observatory in October Tommaso Occhipinti tommaso.occhipinti@dei.unipd.it, Univ Padova

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