7 Jan 03 CFT+PS Weeks in Review Sequencer status –1553 communications issues may not be fully resolved –scanning still off Calibration –calibration database complications continue –procedure updates in progress AFE related issues –continue effort to eliminate individual link problems –largest SIFT to SIFT gain variation board extracted –crate x51 VRB download challenge –isolate lower ground clips in attempt to reduce noise –timing studies –quiet time zero threshold data tick studies –discriminator threshold reduced from 1%+1pe to 1% Refrigeration issues –7A5 and DB7 heaters essentially off –east cryostat cold block temp reduced to 5.50K –west cryostat cold block temp reduced to 6.3K as test

7 Jan 03 CFT+PS Weeks in Review Trigger –slot 46 link problem due to sequencer backplane modified AFE boards installed to address problem –new CTTT firmware reports inclusive and/or terms –new transition boards installed –CTOC sender firmware updates –six of eight octants appear to be reading out properly –CTT examine CPS –Calibration studies in progress FPS –LED pulser studies of waveguide routing –map updated FPD –north sequencer power supply swap –FPD sequencer installed –VRB installed in crate x52 –an (improper flavor) AFE board installed –electronics database updates ready

7 Jan 03 Dmitri’s Info on Shutdowns 3.5 week shutdown in January Shutdown starts during owl shift Monday 13 Jan –store terminated at Jan 2003 Lab wide power outage 0700 to 0730 Monday 13 Jan Cooling water restriction Monday and Tuesday 13 and 14 Jan will limit platform operations Cryostat warmup begins 0700 Monday 13 Jan Another lab wide power outage currently scheduled for 0700 Friday 17 Jan Cryostat cold again on Saturday 25 Jan Limited access from Friday 31 Jan on... Search and secure ends shutdown on Tuesday 4 Feb Tevatron turn on Wednesday 5 Feb –first low luminosity store on Friday 7 Feb Six week shutdown tentatively scheduled for July-August 2003 –starting ~28 July –anticipate two week startup

7 Jan 03 Pre-Shutdown Studies CTT commissioning Discriminator studies Timing studies FPS map issues DB7 mystery Firmware status FPD readout commissioning Performance versus crossing number Noise Issues? Efficiency studies Tick and turn studies CPS gains FPS performance? FPS bias distribution optimize pedestal location for dynamic range? new discriminator scan procedure?

7 Jan 03 CFT+PS Three Week Shutdown Plans Warm cryostats (VLPC offline for ~2 weeks) –dilute contaminates in gas volume of cryostats –Move cassettes in cryostat? Sequencer backplane replacement? –cassette slot 46 link problems Complete personality and VSVX firmware installation Trigger firmware installation/testing as necessary Trigger hardware upgrades –Transition boards –power supply Verify trigger cabling where necessary –investigate link issues Address FPS map issues LED pulser upgrades –additional crate and pulser boards –software updates Studies –discriminators –trigger –FPS waveguide certification? FPD readout commissioning Routine and repeated platform and DAQ access

7 Jan 03 CFT+PS Infrastructure Sequencer crate 0x3 backplane replacement? Rearrange cassette assignments? –Move cassette in slot DB7? –Move cassettes in east cryostat? –Install cassettes in spare slots? Power supply issues –PS-2-B/+33V readback problem (151969) –measure backplane voltages? –calibrate Vicor voltage readouts? –separate CFT+PS from CAL BLS supply swaps –separate CFT+PS and SMT sequencer power? –remote control of AC input to AFE supplies –enhanced cooling for SMT sequencers? AFE cooling enhancements? –Double wide air dams for special locations –tighten ductwork –north side airflow booster? –cassette dummies in open slots? –Air filter retainers? Enhance protection of LVDS cable plant –LVDS strain relief?

7 Jan 03 CFT+PS Infrastructure Crate x53 VRBC replacement Enclose back of rack PC19 Smoke detectors on platform –test and optimize smoke detectors Install table between cryostat Install water barrier over cryostats Reduce light levels on the platform? –Curtains –dark air dams Identify and qualify spares –grey and fiber cables –VTM, VRB and VRBC –sequencers and sequencer controllers Replace fan filters at end of shutdown Verify AFE assignments CFT environment evaluation?

7 Jan 03 AFE Issues Sequencer firmware updates –facilitate scanning VSVX firmware updates –personalities too Address controls issues –bias readback issues –calibration of cassette temp sensors Address pedestal shifts with discriminator 1% firing Address dead channels Address hot channels Address SVX calibration issues Address data integrity issues PIC temperature calibration for remaining boards? Verify AFE map Verify that all AFEs have front air baffles installed What about low resistance AFE boards?

7 Jan 03 AFE Issues VLPC pixel breakdowns? Bias and Temperature Stability PIC temp calibration Bayonets –lubrication –red LEDs/missing LEDs AFE 1B5 module 3 temperature readback at 8.9K –26 Sept 02 (130024) even after board was replaced AFE 3A0 (480) check VSVX firmware –problems reading out VSVX in slot 5A0 AFE 6A5 module 8 slow temp control response –29 Nov 02 (154974)

7 Jan 03 FPS and LED Pulser Address FPS mapping issues Address FPS temperature control problems FPS pulser cable re-termination FPS waveguides tests LED pulser upgrades –robustness –software update –install additional crate –install additional LED boards –power supply installation upgrade –LED balancing –Decouple CFT from FPS –Communication to control station

7 Jan 03 CTT Resolve cassette slot 46 link issues Resolve CPS link issues Complete installation of new Glink transmitters Complete power supply upgrades Complete personality installation Strain relief for LVDS cabling? Verify LVDS cabling Link tests

7 Jan 03 Warm Cryostat? Install cassettes in slots 1, 3, 101 or else install baffles in those slots Cassette in slot 30 has loose retainer on upper PC mounting rail Cassette 67 (slot 11) LH mounting rail retraction failure Few individual pixels suffer from breakdowns

7 Jan 03 Other Ideas? CFT environment evaluation? –Purge gas replace transformers on SEQ for 1553? –Improve reliability of 1553 communications Unused AFE channels --smaller caps? AFE readout speed upgrade to 53 MHz? Commission spare slots? Re-route SEQ grey cables at SEQ backplane to improve access for diagnostics Re-organize VRB crates to equalize loads?