Minutes of the Tracker Electronics Meeting November 6, 2000 Present: Robert, David, Dieter, Hartmut, and Wilko 1. SEU submission; Dieter: Dieter stated he submitted the SEU registers in HP 0.5um design to MOSIS this morning. The SEU register section consists of four sets of 32 'D' flip flops used as a single shift register. Ned's layout out four SEU hard cells as follows: 1) DFF with clear 2) DFF with preset 3) DFF with clear and substrate separated 4) DFF with preset and substrate lifted. Dieter stated he used all combinations of these cells such that a pattern of 'set, clear, clear, clear' for groups of four cells. He also included a group of 32 Tanner standard cells that has both set and clear. The only type NOT included is a standard Tanner cell with substrate lifted. Dieter noted that there are approximately 7000 parts in this design. Dieter also stated he included version of the preamplifier that works at 2.5 volt VDD. Dieter stated that the previous submission would not work as is due to the bias pin missing at the top level. This will be repaired probably at Accurel http://www.accurel.com/. 2. GTFE schematic, layout; Robert: Robert stated he is working on the schematic. There is lots to do. The GTFE submission must be Feb 1, 2001 to maintain the schedule. Ned is again away due to family. He still needs to go to CERN, which was planned for this week. Time is getting short. 3. Simulation issues; David: David stated that he has the PC version of analog PSpice working. Robert will come to SLAC Tuesday to see how it is set up. Robert stated that he would help David setting up the digital simulation. 4. GTRC specification; David: David stated that the GTRC specification is near completion. Final version should be ready this week. Robert stated that the GTFE also needs the specification written. David stated that he would work on this. Robert will provide the original in a word format. 5. Schedule; David: David is stated he is still working on it. He needs to get with Thomas to check consistency. Robert stated that Gwelen should review the schedule as well. 6. Space requirements; David: David stated that we have a working solution for the problem of flex cable and MCM thickness increase stemming from meeting the IPC requirements. The proposal is to increase the tower pitch. Martin Nordby and Robert will present this change at the next manager's meeting Tuesday morning November 7th. 7. MCM and flex cables; David: David stated that the generation of the PADs MCM board and Flex cable outline and critical component placement is nearly complete. The information is exported electronically by the mechanical engineers using DXF format, which is accepted by PADs. Some C coding is required to place components. David stated the he need to have GTFE and connector decals made. Robert will ask Sergie to produce decals. 8. MCM noise studies; Wilko: Wilko stated that he now has the code running to perform noise scans. He started removing capacitors in groups. The plan is to test the requirements of needed capacitance for bypassing all four voltages on the MCM. He stated that the noise scans take about 10 minutes. Wilko expects to finish this week. 9. File management/Design management; Robert: Robert stated that he and Wilko have started looking into this. Wilko will set up a unix account at UCSC with two directories: 1 with write access for everyone involved in Tracker electronics design, another write accessible only by Robert. The "production" design will be put in the protected area. A working version will go into the write-accessible area. 10. Coordinate system: Masa - Robert will ask Masa to look at the coordinate system write-up proposed by Steve Ritz. Cheers, David David J. Nelson Stanford Linear Accelerator Center (SLAC) 2575 Sandhill Road Menlo Park, Ca 94025 MS 96 djn@slac.stanford.edu Phone 650-926-4652 Fax 650-926-2923