1. TDAQ news and miscellaneous reports M. Sozzi NA62 TDAQ WG meeting CERN – 13/7/2011

2. Today’s meeting

3. TDCB - Cables Cables: two solutions (TCC and I2S), very similar Anyway cannot easily measure differences in Pisa TCC is cheaper and can be purchased in limited quantities Plan: buy TCC cables for the first pre-production (6m length unless explicitly requested otherwise) Check differences with (single) I2S cable on RICH test setup (PG)?

4. TDCB - boards Extensive documentation being prepared Current cost estimate: 1000 € / board (128ch) + 125 € / cable (32 ch, 6m) [1500 € overall] Two V5 board prototypes received: fully equivalent to V4, but different manifacturer/mounting firm Currently under test in Pisa Firmware still requires extensive testing (designer left)

5. TDCB - boards Groups should arrange testing (with TELL1s): RICH: validation in Perugia (M. Piccini) LAV: validation in Frascati (M. Raggi) CEDAR: validation in Birmingham (A. Romano) STRAWS (fallback): validation in CERN (A. Sergi) MUV: ? CHANTI: ? SAC/IRC (if used?): ? Pre-production (12 boards) to start very soon. Finalize orders NOW Subsequent production when? (discussion)

6. TELL1 5 additional TELL1 (on loan from LHCb) - CERN: - Mainz: - Napoli: - LNF: - One still available Lots of TDCB testing and even part of firmware development can be done using TELL1

7. TEL62 One prototype tested with all daughter-cards (incl. TDCBs) Some overheating issues to be assessed Some CCPC software issues with firmware loading (JAM) Mount second prototype soon Extensive testing as firmware is developed (TDCB, GbE, DDR, QDR) Build 10 in 2011 (and 0 in 2012?) Current cost estimate: 3500 €

8. TEL62 firmware New framework for TEL62 started Loosely based on LHCb implementation Manpower issues still present Involvement of 1 person per sub-detector needed RICH: C. Santoni (PG) LAV: ? MUV: ? CEDAR: ? LKr: G. Lamanna (CERN) LKr/L0: A. Salamon (Roma TV) CHANTI: ? MUV: ? SAC/IRC: ?

9. CRATES Wiener crates are good for both TELL1/TEL62: 2 prototypes (7700 €/crate) bought (Roma TV and Frascati) but not yet there. Validation? Ordering? Delivery times? Expect full software support from CERN Some mini-crates available Advice: arrange patched power solution

10. L0TP Torino group (E. Menichetti) entering the game Dedicated meeting in June: - Aim at implementation on a PC with a single existing PCIe card (Altera development board by Terasic) with additional NA62-specific daughter cards (one ordered) Stratix IV GX PCIe 8x 4 GbE on-board DDR on-board Clock inputs 2 connectors for daughter cards

11. L0TP Plan: - Ferrara to provide the board firmware - Torino to provide the daughter cards - L0 trigger-matching code (on PC) not yet covered (1) Is this solution viable in terms of L0 latency? (2) L0TP for 2012 run(s): (a) prototype version of PC-based L0TP OR (b) “patched” temporary solution (e.g. Talk board) Assessment of (2) (and (1)?) by fall 2011

12. General infrastructure / to do TTC network installation (fibres & splitters ordering): proposal finalized (see M. Krivda talk) Wiener crates validation (crates are late!) TELL1 radiation tests? (Birmingham) Common ethernet data-transfer software layer ? Expert working, expect proposal for discussion Adoption of “official” VME single-board computer Seeking LHCb support for porting of online software Need a CERN server for software and documentation Database information

13. Specification issues Do we need/want fine time (sub 25-ns) information together with each L0 trigger? How many bits? Easy solution: eating up some of the 6 bits for L0 trigger word. Data format finalization (see note NA62-11-02) Data endianness?

14. L1/L2 triggers Recipe to reach 100 kHz using independently-computed L1 trigger primitives ? - Straw chambers (see talks by D. Madigojine, J. Pinzino) Severe pile-up issue - Other sub-detectors? Recipe to cut down rate in L2 ? Probably easy, but: Which reconstructions needed (at which level) ? Time required?