LAV electronics status report Mauro Raggi and Francesco

LAV electronics status report Mauro Raggi and Francesco Gonnella TDAQ meeting NA 62 Collboration Meeting 1 -5 September 2014 Ferrara

Hardware status the construction of the LAV is over everything is in its place LAV 12 is in place! “ 15 tonnes slotted into a crevasse with centimeters to spare and set down on target to within 2 mm in one fell swoop without breaking a sweat. Man that guy is good!” M. D. Moulson Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 2

Test stand at CERN The LAV front-end electronic test stand has been moved to CERN to allow in situ calibration and testing of the boards. Test of all the 86 boards have been performed at CERN by F. Gonnella, V. Kozhuharov, S. Martellotti The facility will be also used to characterize the boards we have provided to CHOD and CHANTI Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 3

Boards performance 5 boards have problems, 1 is still in Frascati 83/89 boards are ready 81/81 are installed we have only 2 fully working spares Investigations to fix problems on the remaining 5 spare is ongoing Threshold offset [m. V] Mauro Raggi - Laboratori Nazionali di Frascati Time resolution [ns] 3 September 2014 4

Summary of LAV commissioning Crate PS HV Rasp TEL 6 2 Cabling Platfor m FEE DCS 1 yes yes old redo - 5 ready 2 yes yes old redo - 5 ready 3 yes yes yes - 5 ready 4 yes yes yes - 5 ready 5 yes yes yes - 5 ready 6 yes yes 8 ready 7 yes yes 8 ready 8 yes yes no ~yes 8 ready 9 yes yes no ~yes no 8 ready 10 yes yes no ~yes no 8 ready 11 problem yes offline yes no ~yes 8 ready 12 yes offline yes no no - 8 ready Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 5

Working and tested equipment FEE boards: fully tested assembled and cabled up to 11 LAV 12 cables in production. Status of TEL 62 v 3 5 TEL 62 V 3: LAV 3, LAV 4, LAV 5, LAV 6, LAV 7 2 old TEL 62: in LAV 1 (not working so far) and LAV 2 (working) DCS to be commissioned All the stations are connected Software to be tested Crate Wiener All the crate are available and connected to DCS Problems with the LAV 11 crate (goes OFF with low voltage on 48 V) HV crate All are installed and connected up to LAV 11. Up to A 10 crates are online (DCS? ) Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 6

LAVFEE to TDCB cabling In all the crates with a new tel 62 board (A 3, A 4, A 5, A 6, A 7) we have connected TDCBs and LAVFEE boards. This is NOT an easy task, as there are plenty of noisy and dead channels. The situation is not stable as, apparently, problems might be solved (in lucky cases) just by “massaging” the cables… We managed to get rid of noisy channels in LAV 3, 4, 5 According to me, this will be a constant problem during the run, and we will be forced to mask noisy channels, that will fill up the buffers and prevent the DAQ to work properly. LAV station Noisy channels Dead channels Anti-A 3 0 1 Anti-A 4 0 1 Anti-A 5 0 0 Anti-A 6 1 ? Anti-A 7 3 ? Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 7

Marco’s questions I Tests already performed with other parts of the system Tested the Torino’s L 0 TP communication and primitive transmission Tested PC FARM data transfer (only stations 1, 2, 3 with old TEL 62) Tested DCS communication Periodic trigger used with cosmic rays Few tests so far, more needed LAV system has no configuration files so far We need to understand better what is needed End of burst data We need a histogram of the total multiplicity channel by channel (like tdcccounters) Does it come from the common firmware? Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 8

Marco’s questions II Features which will be ready and available for the 2014 run Full readout chain working for all the stations L 0 trigger based on the To. T and multiplicity in the station for LAV 12 Can ask the minimum value of the To. T on leading only and leading and trailing independently for high and low threshold crossing The missing features which will only be ready for next year, if any, and their testing in the 2014 run Trigger based on the full set LAV (or a subsample) Test using eth switch as concentrator can be foreseen in 2014 LED driver boards (NIM prototype available and under test) Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 9

Marco’s questions III The remaining steps towards the 2014 run Further DCS tests Cabling of A 12 to be finished TEL 62 commissioning just at the beginning The required sequence of procedures when the beam will be available Start testing data transfer for all stations (No LAV primitives in L 0) Testing quality of equalization of HV and thresholds. If necessary tune threshold and or HV settings Muons Most probably we need primitive from LAV in trigger as a stream not in veto to get some unbiased statistical sample. Calibrating the time resolution for online (L 0) and offline Compute time offsets for each station and each channel Start using the L 0 trigger primitives in the main trigger Start tuning the charge reconstruction algorithm with p+p 0 physics K Need different charges better using kaon beam Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 10

SAC and IRC readout By Venelin Kozhuharov Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 11

IRC assembled finished IRC assembly finished and the detector will be mounted soon Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 12

TTCex LTU Read out scheme for SAC & IRC Run. Control USB GANDALF SAC SFP/SFP+ RO PC IRC PC farm Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 13

Read out hardware status Generic Advanced Numerical Device for Analytic and Logic Functions • GANDALF standalone – TTC on GIMLI • Airflow frame • SAC signals • RO PC • USB for configuration and 2014 data transfer Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 14

Status of the software • • GANDALF installed and fully hardware equipped – Can lock the clock and decode the trigger (SOB/EOB) – Can send timestamps for each event – Firmware missing: • circular buffer for event storage until L 0 • zero suppression, event formatting and custom packing Connection to RO PC: USB at the moment, no optical connection – Hardware expected to arrive soon (PCIe optical receiver), but no date – Through USB: 5 words * 32 bit/event, only TS at the moment • Communication to Run. Control and PCfarm tested and verified • DAQ programme under development – • Based on USB for the moment, to be rewritten when the optical receiver is available Not small amount of work. . . trying to identify manpower Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 15

Conclusions The LAV electronics is fully produced, tested, and installed Most part of the system is ready to be connected to the TEL 62 Connecting LAVFEE to a tel 62 for a whole LAV station is not an easy task, we need time so we need to start installing tel 62 as soon as possible Trigger primitive are ready to be used and partially tested with L 0 TP Preliminary test of integration and data transfer were already performed The IRC and SAC are there and the readout need some software work to be performed. Mauro Raggi - Laboratori Nazionali di Frascati 3 September 2014 16