April 16, 2008 online meeting minutes

present: Sergey Boyarinov, Chris Cuevas, Ben Raydo, Sergey Pozdnyakov

We discussed CLAS12 trigger layout and how new Fast Electronics Group boards developed for Hall D can be fitted into CLAS12 environment.

Following table contains channel count for FADCS and their VXS crate layout:

VXS1: EC: 36x6=216 per sector, 1296 total (7 FADCs on left side of VXS, 7 on right, 8 channels unused)

VXS2: PEC: 64x3=192 per sector, 1152 total (8 FADCs on left side of VXS, 4 on right, no channels unused)

VXS3: TOF: 114 per sector, 684 total (8 FADCs on left side of VXS, 14 channels unused)
           SC: 56 per sector, 336 total,
           CC: 18 per sector, 108 total (5 FADCs on right side of VXS, 6 channels unused)

VXS19: HTCC: 48 total (3 FADCs on left side of VXS, no channels unused)
              CTOF: 100 total (7 FADCs on right side of VXS, 12 channels unused)

Total: 3724 channels, 244 FADCs (140 channels unused - 8.75 boards), 19 VXS crates
With spares and test setup: 250 FADC boards, 21 VXS crates

TDC channel counts is the same, CAEN v1190/v1290 boards will be used; the number of boards:

v1190: 2940 channels, 127 per board -> 24 boards
v1290: 784 channels, 31 per board -> 26 boards

JLAB discriminators: 3724 channels, 16 per board -> 233 boards