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SUMMARY: Latest results on the Minicrate performance Status of chamber production Torino line

The status of the Barrel DT fgasparini 11/5/2004. SUMMARY: Latest results on the Minicrate performance Status of chamber production Torino line The High Voltage Boards problem/status The new installation sequence Status of Minicrates components Minicrates production/schedule

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SUMMARY: Latest results on the Minicrate performance Status of chamber production Torino line

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  1. The status of the Barrel DT fgasparini 11/5/2004 SUMMARY: Latest results on the Minicrate performance Status of chamber production Torino line The High Voltage Boards problem/status The new installation sequence Status of Minicrates components Minicrates production/schedule RED = critical ORANGE = not yet stable fgasparini LHCC Review May 04

  2. fgasparini LHCC Review May 04

  3. Efficiency of correct BX assignment Time resolution of different quality trigger HH contribute the 65% HL contrbute 22% LL contribute 2% Uncorrelated (only one PHI SL) ~ 10% TEST BEAM MAY 04 fgasparini LHCC Review May 04

  4. Double track trigger efficiency (default mode) TEST BEAM MAY 04 fgasparini LHCC Review May 04

  5. Backup is set if TSMS is dead There are two TSMDs :one per half chamber Two tracks trigger efficiency default backup default backup fgasparini LHCC Review May 04 TEST BEAM MAY 04

  6. 1st track TS Ghost suppression m m • Data • Trigger emulation • on TDC data Outer SL 2nd track 6 % Inner SL Events with fake tracks : 40-60 % !! Disabled Enabled Fake tracks: low quality Single segments in outer SL fgasparini LHCC Review May 04 TEST BEAM MAY 04

  7. MINICRATE Autotrigger The MC can generate a Level 1 Accept Trigger in standalone mode The feature was tested in Legnaro with cosmic rays. The MC clock is free running at 40 MHz The cosmic tracks are randomly distributed The TDCs are stopped by the MC L1A with an error of +- 1 clock wrt the time of passage of the track : 25 nsec/sqrtf 12 = ~ 8 nsec = 400 micron that will dominate the final chamber resolution Asking the MC to select HH triggers only,allows a large rate of events (~ 100 Hz) The reconstruction efficiency of the parent track is better than 99% 1 Dead tube MB1 MCrate Distribution of HH trigger in a MB3 chamber with MB1 Minicrare MB3 chamber COSMIC RAYS fgasparini LHCC Review May 04

  8. The Minicrate “measure” the max. drift time in steps of 25 nsc. The Max.drift time,computed form the TDC data, is “flat” within +- 18 nsec as expected 1 TDC count = .78 nsec +- 18 nsec Residual 7 point fit ~ 400 mm resolution Layer 1 2 3 4 angle distribution of the tracks reconstructed in the event PHI layer 7 550 mm THETA fgasparini LHCC Review May 04 COSMIC RAYS

  9. Chamber assembly in LNL,Aachen and CIEMAT stable at > 20 ch/year SL for 146 chambers assembled 119 chambers at ISR 104 ch. Measured at Alignment Bench at ISR Installation and handling tools for ISR and SX5 completed (last :the large cradle for MB4 ready in June/July) First MB4 chamber under assembly in Torino (1 month delay wrt Oct.) I-BEAMS final shipment from Protvino 28 June 04 than the largest assembly plotter will be moved to ISR PLATES 96% of plates cut in Torino end production in Dubna march 05 keep the line in Dubna until installation is completed HVB failure: preseries for 400 new HVBoards PCBs ordered : delivery in May Ready to start first assembly of Minicrates in Legnaro at end of May. (3 months delay wrt October) fgasparini LHCC Review May 04

  10. ISR Tunnel April 2004 115 Chambers in ~ 22 Stacks + 5 MB3 due May 4th • In total the old boards have been substituted in: 6 MB1, 3 MB1/9-11 5 MB2, 2 MB2/10 6 MB3 = 20 chambers fgasparini LHCC Review May 04

  11. 435/680 = ~ 64% of the full lot 435/600 =~ 73% of the lot due by the 3 sites fgasparini LHCC Review May 04

  12. fgasparini LHCC Review May 04

  13. Chambers 80 70 Aachen 60 Madrid 50 Padova Cambers produced 40 30 20 10 0 1/1/2001 1/1/2002 1/1/2003 1/1/2004 Date fgasparini LHCC Review May 04

  14. fgasparini LHCC Review May 04

  15. DT Chamber Production (18DT/site/year) The green slope is 70 ch/year for 4 sites The 3 operational sites are running at 23.3 ch/site/year 230 180 140 130 All DTs 120 Planned 80 Achieved Achieved - Planned 30 -20 Q4- Q1- Q2- Q3- Q4- Q1- Q2- Q3- Q4- Q1- Q2- Q3- Q4- Q1- Q2- Q3- 01 02 02 02 02 03 03 03 03 04 04 04 04 05 05 05 Integral of produced chambers /quarter. fgasparini LHCC Review May 04

  16. 40 chambers (80 Superlayers, of the largest MB4) have to be produced in Torino. A first dummy Superlayer was assembled successfully (March/April) Assembly of the First MB4 for YB+2 top started May 3rd. The Torino target End inst.window (V 34.0) chambers needed ?achievable in Torino? Max min 5 ch in 04 than 2/month 1 July 05 (mag.test) 18 (YB+2/+1/0) 10 (YB0 may 05) 15 1 Mar. 06 (end SX inst.) 30 (YB-2/-1) 20 (no sectors1,7,10,12) 29 (dec.05) Sept.06 (end UX Inst) 40 (sect. 1&7) 40 (may 06) 39 Actual rate in the 3 sites is 1.9 ch/month (23.3/year) INFN Milestone is 4 SL (2 ch) by July fgasparini LHCC Review May 04

  17. Status of Torino MB4 Production Line First dummy Sl : wire position measurement Wire seen by CCD camera Wire image sw-reconstruced amedeo.staiano@to.infn.it fgasparini LHCC Review May 04

  18. Chamber calibration status Total quantity to be calibrated: 269 (250 in CMS, 19 spare) Assembled and calibrated: MB1 32 MB2 32 MB3 28 MB4 (all types) 12 Total calibrated:104 Calibration speed: (max) 4 chambers/day Next period: June-August’04 Bench stability:Regularly measured with LTD *: No movement detected * LTD = Laser Tracker Distancemeter (<40 µm precision) fgasparini LHCC Review May 04

  19. Electronics. HV Side HV BOARDS HVBSTORY fgasparini LHCC Review May 04

  20. Shown are the outer layers,the break down occurs across the brown channels. In the center of them is the line carrying the HV for the wires (3.8 KV) .The inner layers carry the HV for cathode and strips. fgasparini LHCC Review May 04

  21. 3800 Voltsground +1800 Volt The three layers of the 1st and 2nd board generation with insulating channels 1.5 mm wide . The other three are the symmetric image. Below the outer layer of the 3rd generation with channels enlarged to 2.8mm . The inner layers are identical to the Old design. - 1200 Volt fgasparini LHCC Review May 04

  22. Total lot of HVB 10850 Type of board total PCB rej. Accepted boards Infant failure Installed in IHEP in IHEP in chambers in chambers 1st generation 7000 6% 3700 1.7% 3700 The 7000 Include a bad batch 21% 2300 6~7% 0 Improve quality Control on PCB production, change the parameters of prepreg no flow deposition 2nd generation 2600 0 2600 0 2600 As above but Increase channel width HV-Ground in outer layers 3rd generation 1600 0 1600 0 ~1000 2nd and 3rd Gen. = SUBSTANTIAL IMPROVEMENT ON INFANT MORTALITY ( no failures) 3rd generation was supposed of at least 5000 boards , production stopped after long term failures of 8 out of 1080 boards of the 1st generation (3000 hours under HV and 5 months in gas) (end Jan 04) fgasparini LHCC Review May 04

  23. PCBs are produced by a firm, the assembly of the components is done in IHEP. The final test lasts 12 hours in gas at 4000 V No failure can be attributed to mistakes during the assembly 1st Gen . HVB FAILURES in chambers (3700 boards): 1.7 % faults in the first 500 hours 0.25% between 500 and 1000 hours 0.08% between 1000 and 1500 0.05 % between 1500 and 2000 0.00 % between 2000 and 3000 hours In Jan 04 8 out of 1080 boards in chambers ready for installation failed at the switch on of the HV after 3 month under HV and 3~6 months in gas 0.7% 2nd and 3rd Gen. Boards failure in chambers 0 / ~ 3000 boards fgasparini LHCC Review May 04

  24. IN summary: Failures occurred in the 1st generation boards only in the outer layer (3800 volts) along the long straight lines AND along the bent ones. No failure in the inner layers (1800 and –1200) Field values in inner and outer layers are often comparable. Failures are at the interface between outer prepreg and FR4 PCB In Feb. 04 200 old boards of the bad batch were put in a vessel at 3 bar in Ar/CO2 for one month after a HV normal test of 24 hours : 4 failed at the switch on after the treatment. fgasparini LHCC Review May 04

  25. 1st generation good board failures Section of 1st gen board of the bad batch 2 1st gen. Good board that failed fgasparini LHCC Review May 04

  26. We found indication that : the week point is the bad adhesion of the no flow prepreg to the FR4, The fabrication procedure could leave microbubbles trapped at the interface. Absorption of gas can worsen this weakness. Improved boards are visibly and experimentally better However we can’t safely predict the long term behavior. Events are too rare and can depend on unknown parameters (operation mode,handling etc….) ACTION: MAKE NEW BOARDS: avoid use of prepreg no flow, and minimizes the direct contact of HV insulating parts with the gas. This can be done by adding two extralayers. (from 6 to 8 layers). fgasparini LHCC Review May 04

  27. CROSS SECTION OF OLD and NEW HVB In this layer are the distribution lines of HV to the wires and the pads to sold components: Resistors,capacities and connection wires In this layer wires connections only insulation “Prepreg no flow” WIRES 1 STRIPS 1 “Prepreg flow’ CATHODES 1 CATHODES 2 STRIPS 2 “Prepreg no flow” WIRES 2 1,2,3rd generation boards NEW BOARDS Flow prepreg Soldering pads in the new outer layer fgasparini LHCC Review May 04

  28. No ground plane in the Wire layers (3) Channels in the inner layers were enlarged (1,2) 4 added layer 3 new 2 1 old fgasparini LHCC Review May 04

  29. The total lot of boards is about 10850 In agreement with CMS ,to avoid dramatic delay in the installation, we are installing the 1600 Boards available from the 3rd generation in the chambers to be installed in YB+2,the most accessible one . Change the sequence of installation in the yokes Use the NEW Boards in the YB+1 etc in Nov…Dec. In the mean time the sites will equip their chambers with old boards of any type that will be gradually substituted with the NEW before installation of chambers in the yokes. 9250 NEW Boards are needed for wheels +1,0,-1,-2 The collaboration agreed to produce 11000 new boards 9250 for the installed chambers 1750 as spares (for spare chambers and in case of problems in YB+2) Total ~ 11000 fgasparini LHCC Review May 04

  30. 8 8 8 11 11 11 9 9 9 10 10 10 4 4 4 3 3 3 5 5 5 6 6 6 6 2 4 4 3 4 4 5 3 3 5 5 6 6 6 YB0 YB+2 YB+1 8 8 8 11 9 11 11 9 9 10 10 10 5 3 1 OLD 6 5 4 YB+2 YB+1 YB0 1 2 3 v 33.2 JAN 05 By the time of the magnet test v 34.0 July 05 CHANGE OF THE INSTALLATION SEQUENCE NEW New Boards 3rd gen.boards New Boards fgasparini LHCC Review May 04

  31. New PCB design,approved by DT and CMS, and review by a primary firm in the HV field. Feb.-March Discussion with several companies,offers and choice of 2 companies April A preseries of 200 PCBs was ordered to each firm: April delivery 2nd half of May. Test preseries (3 weeks max.) end June assemble ~ 200 HVB for 4 ~ 5 YB+1 chambers July Share production between the two companies Delivery 1st batch of 2000 PCBs expected end July. IHEP is setting up a fast assembly line capable of 1200 boards/month (full lot in 9 months , completed by April 05) Components are under procurement First batch of NEW HVB for YB+1 expected by end Sept. APPROVAL OF Fund. Ag. IS PENDING fgasparini LHCC Review May 04

  32. to Sector Collector SB/CB TRB TRB trigger-, monitoring-, synch- data path Control path to Slow Control JTAG, Parallel Interface Drift Tubes Local Trigger ElectronicsBoards Production Status TRACO ASICs TSS ASICs fgasparini LHCC Review May 04 TSM: 3 pASICs

  33. BTIM CCB CCB link • Multichip Ceramic Module: 4 BTI per module. • Almost half production done (~5500/12500). • A lot of 2500 modules re-tested successfully by Metallux: only 5 (=0.2%) modules rejected. Control Boards. • The 40 prototypes, foreseen at the beginning of April, are delayed to end of May. • Late delivery of components fgasparini LHCC Review May 04

  34. TRB Trigger Boards. From first preseries of 55 (Jan 04) Bad yield of fabrication From Second preseries (subm. Feb 04) under test at the firm delivery in two weeks • Boards already available: • 29 TRB-φ • 9 TRB-θ • 50 TRB-φ • 20 TRB-θ • 10 TRB-φ-32 Enough for ~15 minicrates. The need of a 2nd preseries delayed the delivery of the first batch……………assume delivery of 200 TRB by september fgasparini LHCC Review May 04

  35. fgasparini LHCC Review May 04

  36. Server Board TRB1 TRB2 TRB3 Sector Collector TRTH1 TRTH2 TRB5 TRB4 TRB6 fgasparini LHCC Review May 04

  37. PLAN for MINICRATE ASSEMBLY: Read-out part assembled and tested in CIEMAT (planned 12/month) Assembly of the Trigger part and full test in two sites: first in Legnaro and a second by september in Bologna (NEW). (16/month ?) A stand to test the MC after installation in chambers should operational at ISR in July. First batch of 10 Readout MC from CIEMAT expected today in Legnaro ( 5 MB1 L, 3 MB2 L, 2 MB3 L) First assemblies of the Trigger part in Legnaro end of May(CCB availability) Expected delivery of first 5 MB1 MC for YB+2 top within July. fgasparini LHCC Review May 04

  38. Install. Sequence YB+2 bottom June/July no MC Yb+2 Top July to Nov. 17 MC YB+1 Bottom Dec 19 MC YB+1 Top Jan 12 etc…… MC prod readout + trigger needs for July 32 >= 5 5 MB1 YB+2 top September 44 >=17 17 complete YB+2 top October 56 >= 33 Nov. 68 49 36 YB+1 bottom Dec 74 57 48 YB+1 top Jan 86 73 May > 134 137 126 YB+2,+1 and 0 Assume 200 TRB available by mid September Prod speed of readout MC: 12/month Prod speed of complete MC: sept . 12/month than 16/month 8 in Dec fgasparini LHCC Review May 04

  39. BOTTOM 1st generation HVB replaced by 3rd gen. in all chambers apart for 20channel HVBs in the MB2 Theta SL fgasparini LHCC Review May 04

  40. TOP • The chambers in red are built with HVB_3rd but they are naked and must undergo the alignment calibration fgasparini LHCC Review May 04

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