Electronics & DAQ Working Group Meeting Updates

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The Electronics & DAQ WG meeting covered topics such as ePIC synchronization, clock distribution, FELIX system requirements, RDO design, and fiber protocols. Discussions included high-level fiber protocol considerations and upcoming collaboration meetings to address issues related to rates, ASICs, and preliminary design reviews. The session also highlighted the need for accurate translations of data and updates on slow controls efforts.

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  1. Electronics & DAQ WG 12/21/23 Agenda Announcements ePIC Synchronization and Clock Distribution William Gu Timing system, FELIX needs and use, RDO design, fiber protocols Thoughts on high level fiber protocol - Jeff 12/21/2023 Electronics & DAQ WG 1

  2. Electronics and DAQ WG 12/21/23 Collaboration Meeting Wed 1/10/24 Collaboration Meeting Workfest, Joint meeting of SRO and Electronics & DAQ Friday 1/12/24 Software & Computing report, Electronics, Readout & DAQ report Saturday 1/13/24 Significant time dedicated to planning TDR New results coming from backgrounds Rates in n-ecal ~10^5hz/channel nearest beam, need to translate to FEB impact carefully More coming soon, generally need more accurate translations than last years numbers Far forward/backward preliminary design review 2/12/24 Work to deal with some issues there High rates in the low Q taggers High rates in the luminosity detectors (meaning of term histogramming ) More focus on ASICs starting next year with monthly updates (starting 1/15/24) Fernando still requesting info on Qmin/Qmax: https://brookhavenlab.sharepoint.com/sites/EICPublicSharingDocs/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FEICPublicSharingDocs%2FShared%20Documents%2FExperimental%20Program%2FePIC%2FDAQ%26Electronics&p=true&ga=1 Slow controls efforts 12/21/2023 Electronics & DAQ WG 2

  3. Electronics and DAQ WG 12/21/23 Collaboration Meeting Wed 1/10/24 Collaboration Meeting Workfest, Joint meeting of SRO and Electronics & DAQ Friday 1/12/24 Software & Computing report, Electronics, Readout & DAQ report Saturday 1/13/24 Significant time dedicated to planning TDR New results coming from backgrounds Rates in n-ecal ~10^5hz/channel nearest beam, need to translate to FEB impact carefully More coming soon, generally need more accurate translations than last years numbers Far forward/backward preliminary design review 2/12/24 Work to deal with some issues there High rates in the low Q taggers High rates in the luminosity detectors (meaning of term histogramming ) More focus on ASICs starting next year with monthly updates (starting 1/15/24) Fernando still requesting info on Qmin/Qmax: https://brookhavenlab.sharepoint.com/sites/EICPublicSharingDocs/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FEICPublicSharingDocs%2FShared%20Documents%2FExperimental%20Program%2FePIC%2FDAQ%26Electronics&p=true&ga=1 Slow Controls efforts Ken Livingston Dmitry Kalinkin 12/21/2023 Electronics & DAQ WG 3

  4. Electronics and DAQ WG 12/21/23 Collaboration Meeting Wed 1/10/24 Collaboration Meeting Workfest, Joint meeting of SRO and Electronics & DAQ Friday 1/12/24 Software & Computing report, Electronics, Readout & DAQ report Saturday 1/13/24 Significant time dedicated to planning TDR New results coming from backgrounds Rates in n-ecal ~10^5hz/channel nearest beam, need to translate to FEB impact carefully More coming soon, generally need more accurate translations than last years numbers Far forward/backward preliminary design review 2/12/24 Work to deal with some issues there High rates in the low Q taggers High rates in the luminosity detectors (meaning of term histogramming ) More focus on ASICs starting next year with monthly updates (starting 1/15/24) Fernando still requesting info on Qmin/Qmax: https://brookhavenlab.sharepoint.com/sites/EICPublicSharingDocs/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FEICPublicSharingDocs%2FShared%20Documents%2FExperimental%20Program%2FePIC%2FDAQ%26Electronics&p=true&ga=1 Slow Controls Efforts 12/21/2023 Electronics & DAQ WG 4

  5. Electronics and DAQ WG 12/21/23 Collaboration Meeting Wed 1/10/24 Collaboration Meeting Workfest, Joint meeting of SRO and Electronics & DAQ Friday 1/12/24 Software & Computing report, Electronics, Readout & DAQ report Saturday 1/13/24 Significant time dedicated to planning TDR New results coming from backgrounds Rates in n-ecal ~10^5hz/channel nearest beam, need to translate to FEB impact carefully More coming soon, generally need more accurate translations than last years numbers Far forward/backward preliminary design review 2/12/24 Work to deal with some issues there High rates in the low Q taggers High rates in the luminosity detectors (meaning of term histogramming ) More focus on ASICs starting next year with monthly updates (starting 1/15/24) Fernando still requesting info on Qmin/Qmax: https://brookhavenlab.sharepoint.com/sites/EICPublicSharingDocs/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FEICPublicSharingDocs%2FShared%20Documents%2FExperimental%20Program%2FePIC%2FDAQ%26Electronics&p=true&ga=1 Slow Controls Efforts Ken Livingston 12/21/2023 Electronics & DAQ WG 5

  6. Electronics and DAQ WG 12/21/23 Collaboration Meeting Wed 1/10/24 Collaboration Meeting Workfest, Joint meeting of SRO and Electronics & DAQ Friday 1/12/24 Software & Computing report, Electronics, Readout & DAQ report Saturday 1/13/24 Significant time dedicated to planning TDR New results coming from backgrounds Rates in n-ecal ~10^5hz/channel nearest beam, need to translate to FEB impact carefully More coming soon, generally need more accurate translations than last years numbers Far forward/backward preliminary design review 2/12/24 Work to deal with some issues there High rates in the low Q taggers High rates in the luminosity detectors (meaning of term histogramming ) More focus on ASICs starting next year with monthly updates (starting 1/15/24) Fernando still requesting info on Qmin/Qmax: https://brookhavenlab.sharepoint.com/sites/EICPublicSharingDocs/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FEICPublicSharingDocs%2FShared%20Documents%2FExperimental%20Program%2FePIC%2FDAQ%26Electronics&p=true&ga=1 Slow Controls Ken Livingston 12/21/2023 Electronics & DAQ WG 6

  7. Electronics and DAQ WG 12/21/23 Collaboration Meeting Wed 1/10/24 Collaboration Meeting Workfest, Joint meeting of SRO and Electronics & DAQ Friday 1/12/24 Software & Computing report, Electronics, Readout & DAQ report Saturday 1/13/24 Significant time dedicated to planning TDR New results coming from backgrounds Rates in n-ecal ~10^5hz/channel nearest beam, need to translate to FEB impact carefully More coming soon, generally need more accurate translations than last years numbers Far forward/backward preliminary design review 2/12/24 Work to deal with some issues there High rates in the low Q taggers High rates in the luminosity detectors (meaning of term histogramming ) More focus on ASICs starting next year with monthly updates (starting 1/15/24) Fernando still requesting info on Qmin/Qmax: https://brookhavenlab.sharepoint.com/sites/EICPublicSharingDocs/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FEICPublicSharingDocs%2FShared%20Documents%2FExperimental%20Program%2FePIC%2FDAQ%26Electronics&p=true&ga=1 Slow Control efforts ongoing. Estimating scale, block diagrams, meet with project 12/21/2023 Electronics & DAQ WG 7

  8. Electronics and DAQ WG 12/21/23 William s Talk 12/21/2023 Electronics & DAQ WG 8

  9. Goals for the next few months regarding protocol 1. Detailed requirements for RDO Define scheme for handling bunch identification a) Each timeframe should have a time of a certain number of bits b) Bunches within each timeframe should be limited to a specific length (16 bits?) c) Define whether the timeframes start at the same bunch ID relative to the revtic, or can start at any point in the revolution of the beam d) Define how TOA bits from the ASICS get translated into real times relative to BX, and in real time Untangle 40MHz issues Make sure we cover any time difference between ASIC time intervals and Timeframe time intervals e) Define how ADC s get translated to BX times in RDO Define mechanism for software triggers. a) For software triggering occurring in DAM, how to communicate the trigger info from other detectors b) Do we need/want the capability to software trigger in the DAM & in the EBDC (or later) c) Trigger words in the Fiber protocol (triggering calibration systems for example) Define scheme for handling overruns / busys Strategy, what to do with lost data, lost components 12/21/2023 Electronics & DAQ WG 9

  10. Thoughts on High Level Protocol - Handling overflows Handling Overflows FEB FEB FEB FEB FEB Assigns overrun status Synchronous Transfer RDO RDO RDO RDO Assigns overrun status Synchronous Transfer DAM Much less clear: Asserts Busy Buffered Transfer Much less clear: Asserts Busy EBDC 12/21/2023 Electronics & DAQ WG 10

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