1. 1 Cost Estimate (and configuration) Drew Baden Univ. Of Maryland July 2001

2. 2 HB, HO, and HE Geometry Layer 0 in HB and HE eliminated in readout HE  =28 and 29 combined into 1 TPG HE  >21 has 10° segments, therefore 2 TPG/channel

3. 3 HF Geometry For this estimate, use h/f scheme:  36  -towers, 12  -towers, 2z, 2F/B  should be ok to 10% for cost estimate but will clean it up ASAP

4. 4 Constraints Magic numbers:  3 channels per fiber -1 channel = 1 TPG for HB, HE<21 -1 channel = 2 TPG for HE>21 -HF is complicated (more later)  TPG: -8 TPG per SLB -3 (or fewer) SLB per HTR  DCC input bandwidth -140 bytes/HTR -100kHz L1A -<200MB/s total  limits crates to 15 or fewer HTR

5. 5 Proposal HTR  24 channels, or 8 fibers, per HTR -limits HTR to 3 or fewer SLB  SLB are the “daSilva” TPG transmitter boards to Level 1  boards are large - can maybe accommodate 4 but would be at expense of front-panel space  8 TPG pair per SLB, therefore 24 TPG/HTR. Going to 4 would make 32 TPG/HTR, but 32 channels, 3/fiber…doesn’t fit!  We are SURE that 24 channel HTR cards will assume a minimal of risk for going to the HTR prototype VME  15 or fewer HTR per VME crate at full 24-channel occupancy -for 120-140bytes/HTR @ L1A, bandwidth is 180-210 MB/sec  this is for 10 time buckets + TPG + 1 byte/remaining channels + 15% occupancy -my feeling: we will be ok here  e.g. 10 time buckets is probably overkill?

6. 6 HB/HE  TDAQ Mapping HB 1-  -10  2 crates, 15 HTR/crate, 1 channel = 1 TPG, 3 SLB/HTR HB 11-  -14  1 crate, 12 HTR, 1 channel = 1 TPG, 3 SLB/HTR HB  =15  1 crate, 9 HTR, 3 channels per TPG sum, 9 SLB HB+HE  =16  1 crate, 12 HTR, 4 channels per TPG sum, 12 SLB -3/4 SLB per HTR, not sure if it’s really doable (ask WSmith!) HE 17-  -20  1 crate, 15 HTR, 2 channels/TPG for  =17 and 1:1 for 18-20

7. 7 HB/HE  TDAQ Mapping (cont) HE  =21 and 22  since 1 channel = 2 TPG, can only put 4 fibers into HTR  use the unused fibers for HB PINS -4 fibers x 3 PINS = 12 PINS/card  need 3 HTR cards for each annulus -3 x 4 fibers x 3 fibers/channel = 36 x 10° = 360° -36 PINS total per HTR x 2 HTR = 72 PINS  takes care of all HB PINS HE  =23 and 24  same as above, only here we put all 72 channels of HE PINS 1 crate for HE 21-  -24  12 cards, still 3 SLB/card = 36 SLB

8. 8 HB/HE  TDAQ Mapping (cont) HE  =25 and 26  2 longitudinal channels in sum, still 10°  therefore half number of SLB as previous crate  same number of HTR cards (12) HE  =27  5 longitudinal channels in sum, still 10°  5 fibers x 3 channels/fiber = 15 channels, or 30° per HTR  12 HTR covers this annulus -still 72 TPG/annulus, 8 channels/SLB, or 9 SLB total

9. 9 HB/HE  TDAQ Mapping (cont) HE  =28 and outer “radiation” annulus (29)  add together to form 1 TPG annulus  same 12 HTR as previous annulus now covers 0<  <   each HTR must receiver: -3 fibers for 2 channels of  =28 and “29” (  =20°) -9 HTR makes 180° coverage -180 means 36 TPG channels, or 4.5 SLB  will this work? WSmith says maybe….TBD  must use 2 VME crates to cover these annuli

10. 10 HO  TDAQ Mapping No SLB! 15 HTR/crate:  24 channels/card, 120° of  per HTR, 3 HTR/annulus Total of 3 crates for each HO, 6 total

11. 11 HF  TDAQ Mapping Need 12 HF towers to make 1 TPG:  , 2 , 2z  12 channels means 4 fibers - therefore 2 TPG per 1 HTR, or.5 SLB/HTR 1 HTR covers 3 units ,  40°  would need 9 HTR to cover 3 units of , all 360°  4 sets of 9 would cover all 12 units of  -36 HTR total, can stuff into 3 VME crates of 12 HTR/crate -total of 6 VME crates for entire HF -NOTE: will go up when get better understanding of mapping

12. 12 Unit Costs HTR  $2600/HTR latest estimate -includes a $1200 Xilinx XCV815EM for all 24 channels  decreases card connectivity, has 1.12Mbit block RAM! Can perhaps go to 405EM, 560kbits, but no understood yet would save about $600/card -Optical-to-Electrical finally sorted out (we hope)  StratusLightwave SQR-45-9-1 - quad 1.6Gb,850nm,receiver  “quotes” (courtesy of Rob’s persistence!) $130, or $260/card DCC/HRC  stick with the $5k/card estimate VME  $5.5k/crate, $3k/rack, 3 crates/rack only 10% spares on everything (except VME)

13. 13 Cost Estimate Cards:  HTR: 469 cards, $1,235k  DCC: 38 cards, $ 190k  HRC: 38 cards, $ 190k VME:  Crates: 34, $187k  Racks: 12, $ 36k TPG Cables:  Total $36k Grand Total:  $1.930M