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December 10th 2020 » History » Version 4

Alexandre Camsonne, 12/10/2020 03:32 PM

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h1. December 10th 2020
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* Ecal discussion
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** DAQ running
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** working on decoder to look at data
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** will try PMTs from Alexandre to test preshower which is noisy
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** Jixie plan to book the truck and lodging for beginning of year
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** trying to find an adapter for MAPMT too
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** David and Jixie will evaluate expected rates for different energies
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* Updates
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** VMM 
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*** Ben helped Ed for code for 1 gigE on developement board - know what to change to get it working - trying to get it done before Christmas break. Software from Ben available to read out data with a computer 
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*** migration from 12 to 128 channels : could try 10 gigE link - can use 10 gigE directly since it is backward compatible
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*** will look at how to put board on detector and take data with source
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*** layout work with Jeff - will meet with Gianluigi at some point to have look on new design
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** APV
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*** still simulation - can saturate VME bus in VME2eSST - and focusing on SBS TEDF setup for testing later 
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*** will switch to VTP code after ( in January for FADC first and after SSP for MPD readout )
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*** optical to VTP board for middle of December - can use the VTP front panel - 
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*** Xinzhan - was able to run the code to generate threshold - 
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** FADC 
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*** FADC code done and ready to be tested for VXS readout 
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*** TI oscillator at 50 MHz 
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*** summary from Hanjie https://redmine.jlab.org/attachments/download/1116/FADC_dt3%20(1).pdf - dead time fairly low at 20 to 30 KHz - need to increase buffer size to use higher event blocking factor - will also test measuring asymmetries - need to think best way to generate the assymetry