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Opto-Board

Opto-Board. WBS 1.1.1.4. K.K. Gan The Ohio State University. Outline. l Introduction l Opto-board design l Cost and schedule summary l Conclusions. ATLAS Pixel Opto-link. 6-7 x. OSU Responsibilities. l design and testing of VDC and DORIC P testing 50% of final production

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Opto-Board

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  1. Opto-Board WBS 1.1.1.4 K.K. Gan The Ohio State University US ATLAS Pixel Meeting

  2. Outline l Introduction l Opto-board design lCost and schedule summary l Conclusions US ATLAS Pixel Meeting

  3. ATLAS Pixel Opto-link 6-7 x US ATLAS Pixel Meeting

  4. OSU Responsibilities l design and testing ofVDC and DORIC P testing 50% of final production l design, fabrication, and testing of opto-boards Pfabrication and testing of disk sector in final production US ATLAS Pixel Meeting

  5. OSU ATLAS Personnel l Faculty K.K. Gan, Harris Kagan, Richard Kass l Post-docs Mike Zoeller + offer pending l Graduate Students Kregg Arms, Rouben Ter-Antonian l Engineers Mark Johnson, Chuck Rush l Technicians Jim Burns, Shane Smith, Bob Wells US ATLAS Pixel Meeting

  6. Opto-Board lconverts: optical signalelectrical signal lcontains 6-7 optical links: P layers 1 and 2 optical link: u DORIC, VDC, PIN/VCSEL (opto-pack) P B layer optical link: u DORIC, 2 VDC, PIN/2 VCSEL (opto-pack) luse BeO for heat management but prototype initially in FR4 for fast turnaround and cost saving US ATLAS Pixel Meeting

  7. Opto-Board Prototype I ldesign for DORIC-D2/VDC-D2 lcontain 6 opto-links for use in disk sector luse SCT style opto-packs luse 50-pin connector lfabricated using FR4 in January 2001 US ATLAS Pixel Meeting

  8. Opto-Board Prototype I Opto-Packs VDC DORIC US ATLAS Pixel Meeting

  9. Bit Error Rate Tester PIN opto-pack VCSEL opto-pack VDC lsend bi-phase marked pseudo random data to VCSEL via VDC lcheck returned data for bit errors US ATLAS Pixel Meeting

  10. PIN Current Threshold of DORIC-I1 mounted on PP0 l no degradation of PIN current threshold for no bit errors as more links are added on opto-board and PP0 US ATLAS Pixel Meeting

  11. Setup with PP0 BER tester opto-board ISET + VPIN US ATLAS Pixel Meeting

  12. Setup with PP0 data return opto-board US ATLAS Pixel Meeting

  13. Opto-Board Prototype II ldesign for DORIC-D2/VDC-D2 and DORIC- I1/VDC-I1 lcontain 7 opto-links for use in barrel and disk luse opto-packs with multiple PINs luse 80-pin connector lfabricated using FR4 in April 2001 US ATLAS Pixel Meeting

  14. Opto-Board Prototype II VDC-D2 VCSEL opto-pack DORIC-D2 3-PIN opto-pack llarge distance between DORIC and PIN lPIN current thresholds for no bit errors comparable with prototype I US ATLAS Pixel Meeting

  15. Opto-Board Prototype III ldesign for DORIC-D3/VDC-D3 and DORIC- I2/4-channel VDC-I2 lcontain 7 opto-links for use in barrel and disk luse SCT style opto-packs luse 80-pin connector lfabricated using FR4 lexpect delivery by November 15 US ATLAS Pixel Meeting

  16. Opto-Board Prototype III US ATLAS Pixel Meeting

  17. Opto-Board Prototype IV ldesign for 4-channel DORIC- I4 and VDC-I4 lcontain 7 opto-links for use in barrel and disk luse 8-channel opto-packs luse 80-pin connector lfabricated using FR4 lexpect submission in summer 2002 llast submission before using BeO US ATLAS Pixel Meeting

  18. Opto-Link Proton Irradiation lApril 2000: Pdesigned and fabricated test boards for VDC-D1 irradiation lApril 2001: Pdesigned and fabricated test systems: u packaged DORIC-D2 and VDC-D2 irradiation in cold box u optical link irradiation on shuttle ] some dice started failing after several Mrad lSeptember 2001: Pdesigned and fabricated much improved test systems: u packaged DORIC-I1 and VDC-I1 irradiation in cold box u optical link irradiation on shuttle US ATLAS Pixel Meeting

  19. Test Boards for Irradiation in Cold Box BER Tester DORIC Distribution Board 1 m ribbon 25m ribbon + 25 m coaxial coaxial 20 MHz VDC Distribution Board Beam Area Distribution Board 5m Ribbons Test Boards US ATLAS Pixel Meeting

  20. Test Boards for Irradiation in Shuttle Bit error rate tester in control room ( 6 boards) Bi-phase marked optical signal 25 m fibers/wires Decoded data Opto-board with 6 opto-links Opto-link Opto-pack clock PIN DORIC data VCSEL VDC US ATLAS Pixel Meeting

  21. Opto-Board Test System for Shuttle Copper/Fiber Hybrid Cable Opto-Board BER Tester US ATLAS Pixel Meeting

  22. Opto-Board Bit Error Threshold vs Dosage l PIN current threshold for no bit errors remains constant up to 40 Mrad l no further degradation a month after irradiation US ATLAS Pixel Meeting

  23. Optical Power vs. Dosage l optical power decreases drastically with dosage: P annealing at ~ 3 Mrad failed to yield more light ]need longer annealing further away from beam ]will add one more meter of rad-hard fibers l robust system allows continuous monitoring of BER with low light US ATLAS Pixel Meeting

  24. Summary of VDC-I1/DORIC-I1 Irradiation l VDC-I1/DORIC-I1 continue to perform well after 40-50 Mrad P new robust test system allows continuous monitoring of BER with diminishing light return US ATLAS Pixel Meeting

  25. Changes from ETC01 l ETC01 based on 2 DMILL test runs piggybacked on FE runs lDMILL dice appears inadequate in radiation hardness ]adapt IBM as new baseline ]up to 4 IBM test runs expected P including development of single-ended pre-amp ]change from one to four FR4 opto-board prototypes: P IBM ] DMILL dice P connector: 50 ] 80 pins P single ] multiple channel dice P SCT ] pixel opto-packs US ATLAS Pixel Meeting

  26. Changes from ETC01 (continued) l much more sophisticated proton irradiation test systems P ETC01 based on cost for irradiating VDC-D1 lrequest by Pixel Collaboration to distribute opto-boards and testers lWBS 1.1.1.4 FY02 P ETC01: $51 K P ETC02: $75 K US ATLAS Pixel Meeting

  27. Opto-Board Milestones US ATLAS Pixel Meeting

  28. Manpower FTE (DOE Base Funding) US ATLAS Pixel Meeting

  29. Manpower FTE (Project Funding) US ATLAS Pixel Meeting

  30. US ATLAS Pixel Meeting

  31. Summary l has produced two FR4 opto-board prototypes Pboth opto-boards can operate with low noise l has submitted third FR4 prototype l expect one more FR4 prototype submission in summer 2002 before submitting first BeO prototype l has almost perfected opto-link proton irradiation test systems US ATLAS Pixel Meeting

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