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Summary of Sensor Quality Tests List of Problems F. Hartmann, CMS Tracker Collaboration March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 1 Total Number of Sensor Delivered Type Received Measured Rejected Accepted* OB2 1407 1399 535 846 OB1 224 223 99 124 W5A 53 53 17 36 W5B 33 12 3 9 W6A 45 45 27 18 W6B 28 14 4 10 W7A 32 20 2 18 W7B 12 12 1 11 *Passing CMS QTC tests February 14, 2003 March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 2 Summary of Quality Tests Restrict summary and discussion to sensors delivered after December 1, 2002 (introduction of new QA steps): 187 OB2 32 W7A 20 W5B 12 W7B 10 W6B 261 Sensors in total Measured 246 March 17, 2003 Catania, Meeting ST - CMS Accepted Rej. Optic. Rej. IV Rej. strips 219 5 9 17 89% 2% 3.7% 7% CMS Sensor Quality Frank Hartmann – University of Karlsruhe 3 Sensors to be rejected Sensors measured in Vienna: 32 sensor ID optical I_450(µA) Vbreak 30211322292717 30211422292910 30211322412101 Sensors measured in Perugia: 127 30210420383204 chip 30210421850212 20.7 30210421850214 16.72 30210422066323 17.2 30210422068004 30210422302724 30210423860203 30210423860204 30210423860213 30210423860215 30210423860224 30210423860508 24.04 30210423860521 30210423860522 30210423863921r eceived broken 30210423863922 30210423974210 chip Sensors measured in Karlsruhe: 27 30211023185021 C 30211023752820 C 30211023752823 26.089 Vdepl Nr.of bad strips 18 7 ST Data: I_450(µA) Ileak Pinholes Cac 3 2 5 Rpoly 14 2 2 450 450 185.99 1 4 1 9 9 6 3 3 2 2 2 1 5 2 5 9 6 6 12 8 1 4 2 2 8 5 1 1 5 2 1 3 6 5 Cac 3 3 5 2 0 3 Rpoly data not available 8.75 105 7 6 6 9 8 6 12 8 Nr. of bad strips Pinholes 2.56 2.34 1.02 1 2 2 2 0 data not available data not available data not available data not available data not available data not available data not available data not available data not available data not available data not available data not available Sensors measured in Pisa not included. March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 4 Checklist for Pre-Series Qualification Pre-series completed Not yet Delivery procedure ST resumed with e-mail notification, still some inconsistencies Bar code o.k. Data format o.k., several files missing Mask design Correct for all sensors W7B test structure wrong QTC IV problem, scratches, number of bad Cac PQC o.k., assuming ST applies Flatband Voltage cut at 10 V Longtime test o.k. p-irradiation o.k. n-irradiation o.k. Bonding test o.k., 2 batches needed cleaning ? % accepted sensors ~ 90 % Goal of qualification not yet reached. March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 5 Optical Inspection I Quality of cut edges has significantly improved. Still some sensors outside specifications (last delivery). Further improvement needed. 1342 m 549 m 20383204 Back view Still 4 rejects out of 261 1464 m March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 6 Optical Inspection II Many scratches on the surface of almost all sensors: In many cases no electrical failure. In other cases broken or shorted aluminium lines ! 23412505 bad Cac short 23412517 23412513 Where and how are these scratches introduced ? Can these scratches be avoided with new scheme skipping IV after cutting? Agreed to try on 1000 OB2 sensors. But then we are even more concerned about cutting defects effecting the IV performance. (On single strip basis & and on overall performance!) March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 7 Bad Cac values Two cases: • Bad Cac values correlated with scratches. (shorts & opens) • One batch (4 sensors): All sensors having hundreds of too low Cac values. AUTOMATIC Cac CAPACITORS MEASUREMENT Is this or will this be introduced ???? March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 8 IV problem - breakdown I Example of W7A, W7B & W6A, W6B sensors: -5 Leakage Current [A] Limit 10 -6 10 -7 10 -8 10 ddg f de dd dc zdb vccxcyda tccw ccs rccu lccncocpq j ccm ccg fchccick cce ccbcd ca bz by b x bw DG DF tbv DE DD DC DB bbs rbbu DA bq CZ CY bp CX bo CW CV CU CT CS bbm lbn CR CQ CP CO CN bbj ibk CM CK bbg fbh CCJ I CL CH be CG CF bd CE bc CD CC bb CB ba CA BZ az BY BX ay BW ax BV BU aw BT BS av BR BQ au BP at BO BN as BM BL ar BK aq BBJ I BH ap BG BF ao BE an BD BC am BB al BA AZ ak AY AX aj AW ai AV AU ah AT ag AS AR af AQ AP ae AO ad AN AM ac AL AK ab AJ aa AI AH z AG y AF x AE AD w AC v ZAB 110 111 AA 109 107 108 106 105 103 104 102 u 100 101 99 97 98 96 95 93 94 92 90 91 89 87 88 86 85 83 84 82 81 79 80 78 76 77 75 74 72 73 71 70 Y 69 67 68 66 65 64 63 62 60 61 59 58 57 56 55 54 53 52 51 50 49 48 sTtUVWX 47 46 45 44 43 42 41 40 39 38 37 36 35 34 rS 33 32 31 30 29 28 27 26 qR 25 24 Q 23 22 p17 P 21 20 O o16 19 N 18 n15 M L13 lm K 14 k12 J j I 11 i H h910 g FfG 78 E e6 D d5 c4 1 C b3 A B 2 a 30211023185001 30211023185002 30211023185005 30211023185009 30211023185010 30211023185017 30211023185022 30211023752801 30211023752802 30211023752805 30211023752806 30211023752810 30211023752813 30211023752814 30211023752817 30211023752818 30211023752821 30211023752822 30211023752823 A 1 0a 100 200 300 400 500 600 Voltage [V] Correlation observed: Sensors with higher leakage current have strips with high leakage current AND strips with high leakage current are often in areas with scratches! March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 9 IV problem - breakdown II Time dependence observed for some sensors. Important to agree on test procedure. longtime 5 4.5 4 30211322292506_2 3.5 current [uA] 30211322292506_3 30211322292506_1 3 30211322292720_1 30211322292720_2 2.5 30211322292720_3 30211322292518_1 2 30211322292518_2 30211322292518_3 1.5 1 0.5 0 0 20 40 60 80 100 120 140 160 time [h] March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 10 Same IV up to “soft strip breakdown” ST Karlsruhe 1E-5 First strip Second strip current [A] 1E-6 1E-7 1E-8 0 100 200 300 400 500 600 bias voltage [V] March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 11 Leaky strips -- scratches March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 12 Hints • • • • Almost each high IV sensor has a few „high leaky“ strips! Σ leaky strips ~ IV ( few strips drive IV) EACH leaky strip is scratched ! – not all scratched strips are leaky Clear correlation between IV and leaky strips and scratches on sensors observed! • No IV-breaks on Minisensors! different handling ! Scratch test: – Scratchtest on minisensors to reproduce effect • Needle • Pencil (2B) • screwdriver March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 13 Scratches on minisensor „Soft“ scratches with probe needle Carbon residues of pencil March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 14 Deep scratches on minisensor „Not-so-SOFT“ scratches with screwdriver March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 15 Global IV and Individual strip IV Total current Single strip current undamaged small scratch with needle deep scratch with needle scratched with pencil 2B scratched with screwdriver 1,80E-007 1,60E-007 1E-8 current [A] 1,20E-007 x3 1,00E-007 8,00E-008 strip current [A] 1,40E-007 1E-9 strip 5 (not damaged) strip 8 strip 9 strip 10 strip 11 strip 13 x70 6,00E-008 1E-10 4,00E-008 2,00E-008 0 100 200 0,00E+000 0 100 200 300 400 500 600 300 400 500 600 bias voltage [V] bias voltage [V] March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 16 Strip scan (Current) undamaged small scratch with needle deep scratch with needle scratched with pencil 2B scratched with screwdriver current [A] 1E-8 Undamaged minisensor @ 400V: Ileak ~ 0,2nA x 192 strips ~ 35nA IV ~ 38nA Damaged minisensor @ 400V: Ileak damaged strips ~ 55nA Ileak all ~ 100nA 1E-9 IV ~ 120nA 1E-10 0 5 10 15 20 25 30 strip number A few single strips show high leakage current! March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 17 Idiel on scratched Minisensor 1E-5 1E-6 No pinholes created! 1E-7 Idiel [A] 1E-8 1E-9 1E-10 1E-11 1E-12 1E-13 0 5 10 15 20 25 30 strip number Effect is located in the Al layer, above the oxide! CMS sensors have metal strip overhang!!! Scratches remove the overhang and introduce pointlike defects March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 18 Total leakage current [A] Scratch on bias & guard (minisensor) 1,0x10 -8 5,0x10 -9 No scratch on minisensor 0,0 0 200 400 600 800 1000 Voltage [V] Total leakage current [A] 2,0x10 -5 Scracht on bias and guard Exploded view 1,0x10 -5 0,0 -1,0x10 -5 0 200 400 600 800 1000 Voltage [V] March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 19 Preliminary field simulations (with ISE TCAD) March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 20 Solution!?! Scratches -obviously happening very late in the measuring procedure at ST- are critical! Avoiding scratches will certainly improve the yield with respect to CaC (strip failure) , leaky strips (strip failure) and to global IV! BUT There is no guarantee, that avoiding scratches solves ALL problems! Is it enough to skip the IV after cutting????? March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 21 Update Contact Persons General Technical Mask Design Contract and Payment Schedule Shipments Data Files March 17, 2003 Catania, Meeting ST - CMS CMS M. Krammer M. Krammer E. Focardi M. Mannelli A. Cattai M. Krammer CMS Sensor Quality Frank Hartmann – University of Karlsruhe ST G. Fallica G. Valvo G. Valvo G. Di Stefano G. Mendola G. Kauerauf 22 CMS Module Production CMS Tracker collaboration has to produce ~15000 silicon detector modules until end of 2004. We need to procure 19000 ST sensors in 2 years production time. During full production only samples of sensors can be tested by CMS. We have to relay on Quality Control by ST ! Acceptance limit on sensor failure is max 1% ! Due to delays in pre-series production the time schedule is very tight and we have to compress the module production. March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 23 Example of a CMS Module A module consists of 2 sensors, electronic hybrid, 4-6 APV chips, pitch adapter, carbon frame, etc. For many sensors: The first test of silicon sensor after ST quality control is on an assembled module. Replacement of single sensors is basically impossible! The present failure rate of 10% is not acceptable 20% of all modules would fail! March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 24 Summary • Strip failure: Add. measurements by CMS – CaC AUTOMATIC Cac CAPACITORS MEASUREMENT!?! – Leaky Strips (scratches only??) • • • • IV (scratches only??) Optical inspection has to be improved! Some improvements in the shipping logistic needed! Acceptance rate must be increased to 99% – Otherwise sensor failure will be detected about 1 year later (2 sensors assembled together with electronics and mechan. parts) March 17, 2003 Catania, Meeting ST - CMS CMS Sensor Quality Frank Hartmann – University of Karlsruhe 25 Strip leakage current 10 -6 Leakage Current [A] 10 -7 10 -8 10 -9 10 -4 10 dw -5 10 -6 Leakage Current [A] 30211223296114 30211223296121 30211223296122 30211223296123 30211223296124 30211223972807 30211223972812 30211223972816 30211223972822 -5 10 i f uf -7 10 ek dx QM g -8 10 -9 10 ni NJ nj NP uk rj pn NK 151 558 430 374 np NL NQ UI UL sd EU GZ RJ NM OX uh 152 hl X KJ j AB ug owPN et sc UB NVON XF il261 HA 252 WZ ds 264 wt XE 111 265 NG NN dv eu NW OMPD pm qp RKSD hb hy248 JD notv UC FB 375 262 dq 154 cdm 209 NE ha 66bycj lqmc ND UJ 253 Z 259 bD gz jxkm 163 fb 278 155 pc qr pqsruw av 255 260 aw dm 156 zae bh xac y aa ab ad 92 137 ag ah am ai ak aj an al dc dn dl NUokox ao ap ar be bm TJ ub aq as au at ax ay az ba bb bd bk XD bc bg bf bi bj bq 91 dr bn bl bo bp bs br bu bt bw bv bx bz 159 ca cb cd ce cg cf ch ci ck cn cl co cp cr ct du my cc cm cq cs cu cw cv cx cy da cz db dd dg df di dj do dp dt de dh dk 67 266 NI ABG 68 157 ko 79 149 251 nd 247 NF UK dy MY 250 85 mz 479 aat AI vr 158 kh kn Yaf jb kf 503 730 gn NX OY 77 NO 210 gm hs zb 71 ib ly nz pp aam aak aan aap aaq aar aau 162 263 414 tq xd xm xn xo xx xz ya yc yd yi yn yl yo yp yq ys yu yt yw yv yx yy yz za zc zg zf zi zk zn zo zs zr zu zt zw zv zx aac zy aad aae aag aaf aah aai aaj aal aao aas aaw aav aax aay aaz aba abb abc abd abe abg abf abh abi aci 160 gj 257 nc ne vl wg wf wh wm wi wj wn wq wr wu ww wx wy wz xa xb xe xg xf xh xi xk xj xl xp xq xs xr xu xt xw xv xy yb ye yg yf yh ym yk yj yr YY zd ze zh zm zj zl zp zq aaa aab zz abm abk abj abn abl abo abp abq abs abr abu abt abv abx aby abz aca acc acd ace acg ack acj MAA 207 hx hz mg si ue ui ul us uv ux vc ve vf vh vi vk vn vo vp vq vs vu vt vw vv vx vy wa vz wb wc wd we wk wl wo wp ws wv xc abw acb acf ach acm acn acl 84 93 164 nx oh oo sx tftjtTR to itp lTV ttv tw ua ty ttz ud um uj un uo up uq ur uu ut uw uy uz va vb vd vg vm vj XC 211 ic LZ mi ph sg sk sn so sq su st sw sy sz ta tb tc td te tg tTI th tm tk n ts tu uc 124 HV jjv tjy qi qw rm rRQ rn rp irq rs rr ru rt rw rv rx sb se sf sh sm sj sl sp ss sr sv tTX rtx dz ea eb ec ed 148 161 gl no oi pr pu pv pz qg qn qo qu qz rb rd rg rf rh rk rl ro ry sa rz 112 eg ef eh ei fh fz ho i249 fik ju 381 ns oe og of oj op ot ov oy pd pe pg pf pi pj pl po pq ps pt pw px py qa qb qc qd qe qf qh qm qk qj ql qq qs qt qv qy ra rc re 94 96 ee em ek ej en el eo ep es fg ga gp kb kd kj nk nn nl nq nr nu nt nw nv oa ob oc od om on ol oq os or ou oz pa pb pk qx eq er ew ev ex ey ez fa fd fe ff gc ge gg go hg hm hp iijiio kc ke kg ki KN ks mk mp mr mu mw mv na ng nf nh nm ny G 125 fc ffjffo fk fm 177 ifp fq n lfs fr fu ftfx fw fy gd gk hl ih ka lw lz me mf mm mj mn mo mq ms mt mx nb PC fv gb gh gi gq he hq hv id is jz kk kp kr lb lo lp n lrlu llv ma mb ltmd x mh ml 70 gf gs gu gt gw gv gx gy hd hh hj hn hr hu ht ia ie iq iiv iw tiy iz ja jc jd jo jp jq ljs kl ku kt kv kx ky kz lc ld le lg llm lh flk lljliLR lls 146 gr hf hi hk hw ig im ip n i iu r i x je jg j jh jm f j jk jj j i n jw kq kw la TB 704 ACN 145 258 j r OQ MC SI ACG ACL 76 178 188 MZ UU AAG ABD ABY ACK ACM I WO ABH ABO ACD ACF ACH ACJ 150 170 JC SJ UT VC VT XA AAC ABB ABC ABM ABR ABS ABT ABU ABV ABZ ACA ACB ACC ACE ACI 88 NT 431 553 XR YF YS 682 ZZ AAF AAN AAU AAW AAV AAZ ABA ABK ABJ ABN ABQ ABW ABX 59 NS VQ WD WG WH WX WY XJ XI XM XN XV XX YL YW ZK ZW AAA AAB AAE AAK AAI AAL AAP AAS AAT AAX AAY ABE ABF ABI ABL ABP 90 165 hc MQ 504 505 SR VK VM VW WB WC WK WJ WI WN WQ WR WS WT WU WW XB XG XH XK XL XO XP XQ XS XU XT XW XY XZ YB YC YD YG YH YK YJ YI YM YN YO YP YQ YR YU YV YX YZ ZB ZC ZD ZF ZH ZJ ZI ZM ZL ZN ZO ZP ZQ ZR ZS ZT ZU ZX AAD ZY AAH AAJ AAM 713 AAO AAQ AAR 78 97 RD RR TK UY VF VH VI VO VP VR VS VU VX WA VY VZ WE WF WM WL WP WV YA YE YT ZA ZE ZG ZV 726 89 169 171 PO QG TM TZ UE UN UP UR UV VB VD VE VG VJ VL VN VV 126 QR QV RO SN SQ SX TD TG TH TN TW TY UA UM UO UQ UW UX UZ VA 662 698 768 69 208 MP QP QS RV SB SL SO SU ST SV TL TO TQ TS TT UD UG UF UH US 687 766 767 PT QT QY RI RN SE SG SF SH SP SS SW SY SZ TA TE TF TP TU 720 739 741 748 752 757 758 759 760 761 763 764 765 4 L 168 OH OO OW PB PL QL RG RP TC 663 705 718 719 721 722 723 727 729 731 732 733 734 735 736 737 738 740 742 743 744 745 746 747 749 750 751 753 754 755 756 762 C 127 OC OL OP PG PM PS PW QD QH QK QI QQ RA RB RL RU RT RX RY SC 664 673 675 677 678 679 681 683 685 686 690 694 696 701 702 703 707 708 709 710 711 712 714 715 717 724 725 728 E 80 KX OI PI PQ PX QB QC QJ QN QO QW QX QZ RC RE RM RS SK 549 595 602 605 608 612 614 616 619 622 623 624 625 630 631 633 636 637 638 640 641 642 643 644 646 647 648 649 650 651 652 653 655 656 657 658 659 660 661 665 666 667 668 669 670 671 672 674 676 680 684 688 689 691 692 693 695 697 699 700 706 716 F 65 95 NR OZ 421 PH PK PP PR PU PV PY PZ QE QF QU RF RH RW 571 580 587 588 590 592 594 596 599 600 601 603 604 606 607 609 610 611 615 617 618 620 621 626 627 628 629 632 634 635 639 645 654 H 289 MF MH OD OE OR PA 420 QA 564 574 575 577 578 579 582 583 584 585 586 589 591 593 597 598 613 212 NH 384 OA NZ OK OS OU OV PE 429 559 562 563 565 566 568 569 570 572 573 576 581 K 50 147 176 HR MT MW MX NB NY OG OF OJ PJ RZ 542 544 546 547 550 551 552 554 555 556 557 560 561 567 BJN LL MG MJ MI ML MO NC OB OT PF SA 527 529 531 533 534 535 536 537 538 539 540 541 543 545 548 KU LS LV LX MK MM MN MR MS MU MV NA 426 512 514 516 518 519 520 521 522 523 524 525 526 528 530 532 O R S 185 LK LJ LM LN ME 396 506 507 509 511 513 515 517 P Q V 179 HH HX HY IQ JT KH KP KT KV LD LH LT LU MB 343 MD 364 402 489 490 491 492 494 495 496 497 498 499 501 502 508 SM 510 T U 187 JV JY KC KF KI KS KY LC LE LG LF LI LP LW 478 481 482 486 487 488 493 500 W AC AD 46 73 FC 174 IU JA JG JO JP JU KD KE KK KM KQ KR KZ LA LB LO LQ LY 403 471 473 475 476 477 480 483 484 485 HT ID IG IW IZ JJ JN JR JX KL KO KW 370 432 454 460 461 463 465 466 467 468 469 470 472 474 AE AG AF BC ES FN FO GF HQ IE IF IO JB JE JF JL JQ JS JW KA KB 371 447 448 453 455 456 457 458 459 462 464 AH AK AJ AM AL AN AP AR AS AT AV AX BD 72 DE 113 EB EJ ET FK FX GD GG GJ GL HB HC HK HL HO HP HS IA IC IK IJ IIM IL IN IIP IR IS IT IV 267 JH JK JI JM JZ KG 433 437 441 443 444 445 446 449 450 451 452 AO AQ AU AW AY AZ BB BE BG 58 CW DC DH DK DJ DQ DS DZ ED EE EH EK FH FM FU FW FV GA FZ GB 191 GN GS GX 213 HF HJ HM 230 HU HW HZ IB IH IIY X MA 382 425 434 435 436 438 439 440 442 BA BF BH BK BJ BI BM BL BN BO BS CC CK CU CT CV CX CZ DA DB DG DF DL DN DP DR DT DW DV DX DY EC 136 EG EF EI EO EQ EV EX FF FJ FI FL FP FQ FS FY GH GK GI GM GO GP GR GU GT GV HD HG HN 412 415 416 418 419 422 423 424 427 428 BP BQ BR BU BT BW BV BX BY BZ CB CD 82 CG CL CR CS CY DD DI DM DO DU EA EM EL EP EW EY EZ FA FD FE FG 173 FR FT GE GW GY HE HI 408 410 411 413 417 53 75 CA CE CF CH CJ CI CM CN CO CP CQ 138 EN 183 GC 341 404 409 ER 399 401 405 406 407 194 GQ 385 390 391 395 397 398 400 153 166 203 380 383 386 388 389 392 393 394 63 83 189 372 373 376 377 378 379 387 86 356 359 360 361 362 363 365 366 367 368 369 52 184 254 256 342 345 353 354 355 357 330 333 335 338 344 346 347 348 349 350 351 352 358 49 114 139 175 195 245 297 311 322 327 328 329 331 332 334 337 339 340 141 199 206 292 315 316 317 320 321 323 324 325 336 23510 62 128 172 288 290 304 305 308 309 310 312 313 319 326 142 198 201 202 243 282 291 298 299 300 301 302 303 314 318 611 813 914 17 51 116 119 182 197 283 286 287 293 294 295 296 306 307 712 16 18 19 20 21 22 23 32 135 181 241 272 276 280 281 284 285 15 24 26 27 28 29 30 33 34 35 36 40 45 47 56 74 81 110 115 131 196 200 242 244 268 269 270 271 274 275 277 279 25 31 37 38 39 41 42 44 48 57 121 186 190 240 246 273 43 54 55 61 64 87 122 123 130 180 224 225 231 232 233 234 235 236 238 60 98 132 144 167 204 205 214 215 216 217 219 222 223 226 227 228 229 237 239 100 102 107 109 129 140 193 218 220 221 101 99 103 104 105 106 108 117 118 120 133 134 143 192 -10 10 1 A -11 a 10 -10 30211023185001 30211023185002 30211023185005 30211023185009 30211023185010 30211023185017 30211023185022 30211023752801 30211023752802 30211023752805 30211023752806 30211023752810 30211023752813 30211023752814 30211023752817 30211023752818 30211023752821 30211023752822 30211023752823 -12 10 0 100 200 300 400 500 10 0 100 200 strip number March 17, 2003 Catania, Meeting ST - CMS 300 400 500 600 700 strip number CMS Sensor Quality Frank Hartmann – University of Karlsruhe 26