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Single Chip/Event Upset

Single Chip/Event Upset. Raw ADC Readout. First 1000 events Interaction2_small-2006.11.10-19.29.27.mdf. TELL1 62. TELL1 24. Raw ADC Readout. Electronic Channel. Negative signal !?. Events: 175 , 176 , 177. Raw ADC Readout. 50 ADC. Chip 6. Electronic Channel.

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Single Chip/Event Upset

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  1. Single Chip/Event Upset

  2. Raw ADC Readout First 1000 events Interaction2_small-2006.11.10-19.29.27.mdf TELL1 62 TELL1 24 Raw ADC Readout Electronic Channel Negative signal !? JC Wang

  3. Events: 175, 176, 177 Raw ADC Readout 50 ADC Chip 6 Electronic Channel Single Events of Tell1 62 chan 3 adc 761 chan 4 adc 784 chan 5 adc 791 chan 6 adc 794 chan 7 adc 798 chan 8 adc 811 JC Wang

  4. Events: 231, 232, 233 Raw ADC Readout 50 ADC Chip 5 Electronic Channel Single Events of Tell1 24 Channel 15-24, ADC 750-800 JC Wang

  5. Pre-further Study • Only channels: 450 < Pedestal < 600 • Definition: • Upset channel: ADCPedestalCM noise < 20 • Upset link: N(upset channel) > 16 • Upset chip: N(upset channel) > 64 • Data used is a collection of runs with different configurations, individually or in group. JC Wang

  6. TELL1 24 Upset Channel/Link/Chip 34K HP1 events including: straight track, interaction, random trigger Number of Upset Channels Average ADC of Upset Channels Upset Chip ID 28 upset chips entries / 34300 events Huge peak at 0 removed JC Wang

  7. Upset Channels and Real Signal 20 < ADC-pedestal-CM noise < 80 Upset Link Entries Strip Hit Entries Link ID Link ID Upset channels are associated with beam JC Wang

  8. High ADC in Upset Chip Non-upset and not-so-upset channels in upset chips Too many high signal strips in a link, otherwise would be 4 upset links. ADC–pedestal–CM noise Maximum of all non-upset channels Number of Upset Links ?? Extremely high “signals” in several strips cause the upset. JC Wang

  9. All TELL1s from HP1 Upset Chip ID JC Wang Hit Signal Link ID

  10. All TELL1s from HP1 Events: 34300 Upset chips:1155 Upset links: 310 JC Wang

  11. All TELL1s from HP3 Upset Chip ID Hit Signal Link ID JC Wang

  12. All TELL1s from HP3 Events: 63700 Upset chips: 750 Upset links: 205 JC Wang

  13. An Exception Events: 4602, 4603, 4604 Highest “signal” 4.8 6.1 5.6 TELL1 62 (M31R) Raw ADC Readout Electronics Channel 4deg_NominalHV_AfterMoving_NominalBeam_Shifted_3H3V-2006.11.17-03.56.11.mdf JC Wang

  14. Upset Chip/Links for Different Config. 12 half-hybrids in testbeam, 84 half-hybrids in the final system. The track rate in at LHCb environment will be much higher. JC Wang

  15. Summary JC Wang

  16. Upset Chips/Link for Different Runs JC Wang

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