1. 8/9/2000T.Matsumoto RICH Front End RICH FEE Overview PMT to FEE signal connection Trigger Tile Summation of Current RICH LVL-1 Trigger Module1,2 What is going to be built Connection of RICH FEE with MuID ROC Schedule T.Matsumoto, CNS Aug 9, 2000

2. 8/9/2000T.Matsumoto RICH FEE Overview Have you seen this in IR? Components 1 controller Module (center) 10 AMU/ADC Modules 2 Trigger Modules 2 Readout Modules Input and Output / crate 640 PMT signal input 4 G-LINK output (2 initially) to DCM 2 G-LINK output for LVL-1Trigger

3. 8/9/2000T.Matsumoto PMT to FEE signal connection Figure shows an arm (2 side) of RICH PMT array 2560 PMT 640 PMT signals / crate 8 RICH FEE crate is used to read out total 5120 PMT signals There are 2 arms ! RICH FEE Crates 16 PMT (Z) 80PMT (phi) PMT array

4. 8/9/2000T.Matsumoto Trigger Tile 80 PMT (phi) 5 PMT 4 PMT Trigger Tile ….. preamps These 16 Trigger Tiles are processed on a Same LVL-1 Trigger Module. …… 16 PMT (z)

5. 8/9/2000T.Matsumoto Summation of current 5 AMU/ADC Modules A RICH Chip on each AMU/ADC Module makes 2 pairs of 4PMT current sum. Output of RICH Chip are summed up on the Back Plane, again. Back Plane RICH Chip I total = i1+i2+i3+i4+i5 i1i2i3i4i5 4x5 PMT sum 4PMT sum

6. 8/9/2000T.Matsumoto RICH LVL-1 Trigger Module 1 There is working prototype Functions Current to voltage conversion AD conversion (BC =9.6 MHz; 3.5 BC latency) Compare the signals with threshold in each clock

7. 8/9/2000T.Matsumoto RICH LVL-1 Trigger Module 2 Configurations Input : 16 channel /module 4x5 PMT current sum / channel Comparison with threshold Output : 1 G-LINK /module (16 bits) Total 256 bits of trigger information

8. 8/9/2000T.Matsumoto What is going to be built ? Final version of RICH LVL-1 Trigger Module We already have working prototype G-LINK Receiver Board Design, test prototype Production of Final version

9. 8/9/2000T.Matsumoto Connection of RICH LVL-1 Module and MuID ROC Develop special G- LINK receiver board 4 G-LINK receiver developed at BNL Connect with MuID ROC using flat cable behind back plane GND separation

10. 8/9/2000T.Matsumoto Schedule RICH LVL-1 Module (Final) by T.Matsumoto Receiver board (prototype) by M.Tamai Aug 2000 Sep Oct Nov Dec Jan 2001 Feb Mar Insall Design Production Test Design Production Test Receiver board (Final) by M.Tamai Design Production Test Insall

12. 8/9/2000T.Matsumoto Some plot from prototype test FADC output as a function of constant input current Typical pulse height distribution 5MHz rectangular current pulse 10 MHz sampling Base line 2.8 mA Height 4.5 mA

13. 8/9/2000T.Matsumoto Summary There is already working prototype We will make…. Final version of RICH LVL-1 Trigger Module Prototype and final version of G-LINK receiver board All these work will be done by next March