Front end Hybrid Industrial Tester UCL Louvain (L. Bonnet, V. Lemaître, X. Rouby) vincent.lemaitre@fynu.ucl.ac.be In collaboration with RWTH Aachen (M. Axer, F. Beissel, T. Franke, J. Mnich) IRES Strasbourg (JD. Berst, P. Graehling, P.Juillot, C. Maazouzi) http://www.fynu.ucl.ac.be/themes/he/cms/activities/tracker/hybrids.html Vincent Lemaitre tracker week 29.01.03

Current measurements ARC FHIT Comparisons between FHIT & ARC & CMS-like : FHIT does not send triggers while measuring current consumption whereas ARC and CMS-like system do ARC FHIT This problem is solved : FEH needs more current when triggered

Electrical Test: limits From statistics on FHIT measurements intervals = [m-3s; m+3s] where m is the mean of distribution and s the RMS I125 one APV biased Vmin [42 ; 78 ] mA Vnom [48 ; 84 ] mA Vmax [52 ; 88 ] mA I250 one APV biased [220 ; 320 ] mA [300 ; 400 ] mA [320 ; 420 ] mA These limits can be resized with a multiplicative parameter, common for all limit values (available in configuration file).

Functional Test: limits Mux test maximal height 255.0 ADC (Mux output signal height) minimal height 200.0 ADC minimal difference 5.0 ADC Pedestal test number of events 1000 cut window (20 % around the mean) 20.0 ADC Noise test Same data as pedestal test cut window (around the mean) minimal noise cut 0.2 ADC maximal noise cut 1.5 ADC Gain test minimal threshold These are the ARCS parameter All these limits are accessible in the configuration file

FHITS 1.3 New : version 1.3 (updated interface, as asked by industry) Display the # of good and bad hybrids of the current day All part-numbers accepted 1663  1674 (new firmware)

Conversion to XML conversion to XML : direct contact with CERN people to fit to their wishes C – routine being written in Louvain ; not necessary @ industry proposed scenario production and tests @ industry ( logfile creation ) delivery @ CERN of hybrids and logfiles (on CD-R) 1 delivery = # FEH + 1 CD (+ copies) tests @ CERN (with FHIT  logfile creation) creation of XML files (by running the C – routine) @ CERN transfer to database

Number of FHIT set-ups Laboratory Presently In Addition With ARC in CERN 1 mono-FHIT Yes Industry 1 (CT) 1 dual-FHIT No Industry 2 (1 dual-FHIT) Strasbourg 1 mono + 1 dual Aachen Louvain Spares 2 dual-FHIT Yes/No TOTAL 5 boxes + 8 PCBs 3 add. ARC boards

Test procedure @ Industry @ CERN To be tested Test setup A M T E C S A M T E C N A I S N A I S E R N I E R N I FHIT To be tested Test setup Industry 1: Naked hybrids (w/o APVs) Industry 2: Hybrids Before bonding pitch adapter  LINK to DB (XML) @ Industry @ CERN

Mechanics New mechanics : -Easier to handle -Insure thermal contact (“cooling”) -Probe for test of bias return line Heavy cover with auto-retractile probe Pad on hybrid for test of bias return line Hybrid Fine positioning plugs Cooling contact

Summary Difference between set-ups for Current Measurement is understood First estimate of Limits for ET and FT have been evaluate (to be continued) Most recent release of software distributed (FHITS 1.3) -improved display -all part number included (firmware) Agreed procedure for loading FHIT data into DB (almost operational) Proposal for the number of FHIT set up Test procedure including thermal contact of hybrid and test of bias return line.