UCLA Group Meeting March 20, 2014 Andrew Peck Shayan Rastegari 1 Updates from Lab Andrew Peck & Shayan Rastegari March 20, 2014

UCLA Group Meeting March 20, 2014 Andrew Peck Shayan Rastegari 2 Test Stand Documentation Updated the three existing test instruction manuals.. Trying to fix a lot of the vague and confusing wording (e.g. “disable the clock” was used quite often and means exactly the opposite thing in different manuals). Added a new Test Stand Setup document with instructions for how to actually set up the test stand, rather than just running the tests. Uploaded UCLA_test_stand_files_ zip to the twiki. Now only 60 MB when compressed.. So still plenty of room if we decide to add things. Test Stand Software Added checks throughout the test stand software. If using wrong TMB firmware version, you will be warned explicitly: e.g.: “Wrong TMB firmware version: expect=normal, found=debug.” Fixed some other miscellaneous mistakes and typos in the software. ALCT Slow Control Firmware Using Xilinx Impact, Joonas was able to reproduce my hand edited (in a text editor) firmware file. So now we have a fully tested, working firmware version. His documentation is updated with the necessary settings.

UCLA Group Meeting March 20, 2014 Andrew Peck Shayan Rastegari 3 EMU DCS Software ALCT Slow Control Programming Modified the ALCT slow control programming routine so that it actually programs ALCT slow control firmware. Tested on chamber and worked well. Jinghua committed changes to SVN. The committed code works also. TMB Trigger Tests Have been working on the TMB trigger test utilities. Rather extensive port from the UCLA test software of some trigger testing tools. Has more than doubled the amount of TMB code in emuDCS. The tools work, basically.. But need debugging and tuning of the configuration file. Unfortunately now I can’t test the code New tools

UCLA Group Meeting March 20, 2014 Andrew Peck Shayan Rastegari 4 Checking AFEBs with Nikolai Bondar Spent an afternoon with Nikolai Bondar discussing the problems we had been seeing with AFEBs. Pair-plane crosstalk problems are not reproduced. Tested 12 bad boards, only 1 showed some slight issue. Thresholds problems are real. Uniformly low thresholds (>30 boards rejected) can be seen in the database as a low (~40-50 mV) U20 measurement. Nikolai believes these boards can easily be tuned to change an offset. Simply a matter of swapping one resistor in a voltage divider. Hope that maybe Eric or Matthias can spend another afternoon trying to figure out more issues. Nikolai caught a cold and stayed home so we only worked a short time together. Summary of problems: 136 AFEBs rejected in total Thresholds Problems 30 with Low AFEB thresholds 8 with High AFEB thresholds 17 Unspecified 47 with Pair-plane crosstalk 8 were Not in database 5 had No problem specified (but in the bad AFEBs box): 2 with Broken Ejector Latch or Pins 9 with Test 14 problems (time delay verification). 10 with misc. other problems