Agenda of SCT links meeting

09:00-13:00  2nd Feburary 2000

CERN 58-SS (Videoconference Room)

1. Progress reports on opto-packages
• Taiwan, Ming Lee Chu
• OSU, KK Gan
• Marconi, T. Weidberg
2. Market survey for opto-packages
3. Fibre insertion into lids. R. Wastie.
4. Radiation tests in Taiwan  plans G. Mahout.
5. Final results on VCSEL lifetime tests. I-M Gregor
6.  MT connector purchase. J. Troska and N. Uno
7. Opto-flex  design. R. Wastie.
8. Harness production and test equipment. J. Troska
9. Opto-flex to Al tape solder conenction. R. Millea.
10. ASIC status.
• DRX12. D. White
• BPM4-B. N. Kundu
11. OptoIF and BOC status. M. Goodrick

Minutes

• Progress reports on opto-packages
• Taiwan, Ming Lee Chu
Ming Lee showed results from the first 8 of the new style opto-packages. The coupled power into 50/125 micron fibre was in the range 300-1300 microW. See the Taiwan links web page for more data. Radiation and enviromental tests will start from Feb. 16th. Ming Lee will send two packages to Oxford for integration into SCT links and BER tests. More details are available from the Taiwan opto-links web site.
• OSU, KK Gan
KK Gan showed the status of the cap and base packages. KK now uses Aluminia bases. VCSELs stick better now and the first packages are being assembled.
• Marconi, T. Weidberg
The results of measurements of the first 3 phase 2 packages are available on the web. The next batch of up to 10 packages will be delivered by mid  Feburary and the remainder of the 60 packages will vbe delivered by the end of February.
 
• Market survey for opto-packages. A draft of the marker survey for the opto-package is available here. Please send comments to Tony.

 
• Fibre insertion into lids. R. Wastie.

Roy showed photos illustarting the process of putting fibres into lids. A lot has been learnt recently about how to do this and Roy is starting to get very good results for fibre coupled power but some further improvements are still required. Photos are available here (photo1, photo2) and a summary of the results so far is available here.
 
• Radiation tests in Taiwan  plans G. Mahout.

Gilles discussed the plans for irradiation 4 of the new Marconi phase 2 packages to the fluences required for the Pixel levels using the 30 MeV proton synchrotron in Taiwan.
See the copy of the tranparencies for more details.

• Final results on VCSEL lifetime tests. I-M Gregor.

Ingrid showed the updated analysis of the lifetime after irradiation studies for the MITEL VCSELs. These tests showed that the lifetime will be good for VCSELs irradiated up to the SCT levels. Further tests should be performed with the 4 packages irradiated up to the pixel levels in Taiwan.
See the copy of the tranparencies for more details.

•  MT connector purchase. J. Troska and N. Uno

Jan presented the numbers of MT connector ferrule and pins required. The procurement document is avilable here.
 
• Opto-flex  design. R. Wastie.

Roy discussed the status of the opto-flex design. There was a long discussion about the lines required for temperature measurements. There is a strong request to make two indeoenent temperature measurements (one for each side of the barrel hybrid). However there was no scheme  to do this that was agrred. This will be disucssed with Ned Spencer. The preliminary layout of an opto-flex is given under cables from the SCT links home page. It was agreed that we should make one left handed harness (harness -1) which would be compatible wiith current modules.
 
• Harness production and test equipment. J. Troska

Jan discussed the harness production and the question of whether it could be done by outside industry,
See the copy of the tranparencies for more details.
 
• Opto-flex to Al tape solder conenction. R. Millea.

Tony repoered on behalf of Rob that the solder tests with a pulsed thermode were successfull and that a pulsed thermode had been ordered. A sample of 150 Cu/kapton tape were now available for solder tests with the samples of the Al tapes.

• ASIC status.

DRX12. D. White
BPM4-B. N. Kundu
Tony reported that DRX-12 ihas been received and will be packaged.
Nine out of the ten packaged BPM-4B work except that channel 4 is broken on all chips. Nikhil will discuss this with AMS and try to get AMS to reprocess.
 
• OptoIF and BOC status. M. Goodrick

See the transparencies from Maurice.