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AIDA Front end electronics

AIDA Front end electronics. Report May 2008 Progress Data compression Plan for prototype delivery. Progress. Investigating Buffer and FADC PCB layout Checking detector connection board routing. Specification for utility interface - Metronome Power supply (50W) options – 12v distribution

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AIDA Front end electronics

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  1. AIDA Front end electronics Report May 2008 Progress Data compression Plan for prototype delivery AIDA FEE Report

  2. Progress • Investigating Buffer and FADC PCB layout • Checking detector connection board routing. • Specification for utility interface - Metronome • Power supply (50W) options – 12v distribution • FADC interface DDR to parallel conversion AIDA FEE Report

  3. Compression • Max data rate for FEE Gbit link 60MB/sec. • Waveforms are the major contributor to this demand. • Compress the waveforms as they are transferred between memories in the FPGA AIDA FEE Report

  4. Compared lossless methods. 8 sample data sets, 3 types. Each file 128MBytes, compressed in 2000 word “chunks”. Compression for AIDA • Low noise • Noisy • Periodic AIDA FEE Report

  5. Compression for AIDA • Several techniques looked at. • Varying results, all data dependent. • Home-grown method as good as others for this data. • Knowledge of data format/structure. AIDA FEE Report

  6. Compression for AIDA • Minimum+Offset (MO), Data Dictionary (DD), No Compression (NC). • MO usually best, DD best for noisy data. Sometimes NC best. • All improved when bit-packed. • Recommend Minimum+Offset with fallback to No Compression AIDA FEE Report

  7. Milestones for Prototype FEE delivery • Complete Specification : • 1st July 2008 => low risk • Complete Schematic and PCB layout : • 1st Aug 2008. => medium risk • Deliver 6 FEE cards ( 6 weeks ) : • 15th Sept 2008 => low risk • Complete Prototype VHDL : • 1st November 2008 => Medium risk • Commission FEE cards : • 1st December 2008 => High risk • Design ASIC Mezzanine • 1st Aug 2008. => medium risk • Deliver 6 ASIC Mezzanines • 15th Sept 2008 => low risk • Complete Kapton board : • 1st Nov 2008 => low risk AIDA FEE Report

  8. AIDA FEE Report

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