Large scale production of the Multi-Chip Module of the

Large scale production of the Multi-Chip Module of the

12th Workshop on Electronics for LHC and future Experiments
Contribution ID : 19
Type : Poster
Large scale production of the Multi-Chip Module of
the ATLAS Level-1 Calorimeter Trigger
Wednesday, 27 September 2006 16:20 (25)
The Pre-Processor Multi-Chip Module (PPrMCM) is the main processing block of the Pre-Processor System
in the ATLAS Level-1 Calorimeter Trigger. The PPrMCM holds a dedicated signal-processing ASIC and a
Phos4 timing-chip together with seven commercial dice mounted on the substrate. Those are four FADCs and
three LVDS-serialisers. The PPrMCM holds the main functionality of the Pre-Proccessor System, namely the
digitization, calibration and Bunch-Crossing-Identification of calorimeter signals. The production phases of
the PPrMCMs (more than 3200) and test procedures for quality control at different stages of the production
are presented.
Summary
The Pre-Processor Multi-Chip Module (PPrMCM) is the most crucial part of the of the Pre-Processor System
of the ATLAS Level-1 Calorimeter Trigger. The main tasks of the PPrMCM are the digitization, calibration
and Bunch-Crossing-Identification of all ATLAS calorimeter signals. The production of the PPrMCM is done
in several steps. The main steps are substrate manufacturing, dice placing and bonding, “Glob-top” protection
and hermetic brass-cover soldering. Among the chips on the PPrMCM, the Pre-Processor ASIC (PPrASIC) is
the major component as it performs the ATLAS-specific digital data processing. Thorough tests of the PPrASIC
and of the complete PPrMCM were developed and combined later into a testing framework. The framework
contains the software to perform automatic tests in order to verify the full functionality of the PPrMCM. It is
applied after each PPrMCM production phase starting with the ASIC-dice production on wafers, up to final
acceptance-tests for the complete MCM-assembly. This strategy allows to detect faulty components at early
stages of production. Such components can be located and replaced in a repair cycle. This improves initial
production yield from 87% to an even higher percentage. More than 3200 fully functioning PPrMCMs are
produced and ready to be installed in the ATLAS Level-1 Calorimeter Trigger. The experience gained from
the large scale production of the PPrMCM is reported including the optimization of the test procedures, the
production yields, observed problems and corresponding solutions.
Primary author(s) : WEBER, Pavel (Kirchhoff-Institut fur Physik (KIP))
Co-author(s) : HIDVÉGI, A. (Fysikum, Stockholm University, SE-10691 Stockholm, Sweden); WATSON, A.
(School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); DAVIS, A.O. (CCLRC
Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX, UK); GILLMAN, A.R. (CCLRC Rutherford Appleton
Laboratory, Chilton, Oxon OX11 0QX, UK); BAUSS, B. (Institut für Physik, Universität Mainz, D-55099 Mainz,
Germany); BARNETT, B.M. (CCLRC Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX, UK); BOHM,
C. (Fysikum, Stockholm University, SE-10691 Stockholm, Sweden); GEWINIGER, C. (Kirchhoff-Institut für Physik,
University of Heidelberg, D-69120 Heidelberg, Germany); CURTIS, C.J. (School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); GEE, C.N.P. (CCLRC Rutherford Appleton Laboratory, Chilton,
Oxon OX11 0QX, UK); TYPALDOS, D. (School of Physics and Astronomy, University of Birmingham, Birmingham
B15 2TT, UK); CHARLTON, D.G. (School of Physics and Astronomy, University of Birmingham, Birmingham B15
2TT, UK); SANKEY, D.P.C. (CCLRC Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX, UK); EISENHANDLER, E. (Physics Department, Queen Mary, University of London, London E1 4NS, UK); KLUGE, E.E. (Kirchhoff-Institut für Physik, University of Heidelberg, D-69120 Heidelberg, Germany); WOERHLING, E.E. (School
of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); FÖHLISCH„ F. (Kirchhoff-Institut für Physik, University of Heidelberg, D-69120 Heidelberg, Germany); RÜHR, F. (Kirchhoff-Institut für
Physik, University of Heidelberg, D-69120 Heidelberg, Germany); MAHOUT, G. (School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); SCHULTZ-COULON, H.C. (Kirchhoff-Institut für
Physik, University of Heidelberg, D-69120 Heidelberg, Germany); BRAWN, I.P. (CCLRC Rutherford Appleton
Laboratory, Chilton, Oxon OX11 0QX, UK); EDWARDS, J. (CCLRC Rutherford Appleton Laboratory, Chilton,
Oxon OX11 0QX, UK); THOMAS„ J.P. Thomas, (School of Physics and Astronomy, University of Birmingham,
Birmingham B15 2TT, UK); BOOTH, J.R.A (School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); MAHBOUBI, K. (Kirchhoff-Institut für Physik, University of Heidelberg, D-69120 Heidelberg, Germany); MEIER, K. (Kirchhoff-Institut für Physik, University of Heidelberg, D-69120 Heidelberg, Germany); SCHMITT, K. (Kirchhoff-Institut für Physik, University of Heidelberg, D-69120 Heidelberg, Germany); LANDON, M. (Physics Department, Queen Mary, University of London, London E1 4NS, UK); HANKE, P. (Kirchhoff-Institut für Physik, University of Heidelberg, D-69120 Heidelberg, Germany); FAULKNER, P.J.W. (School of Physics
and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); WATKINS„ P.M. (School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); ACHENBACH, R. (Kirchhoff-Institut für Physik,
University of Heidelberg, D-69120 Heidelberg, Germany); STAMEN, R. (Institut für Physik, Universität Mainz,
D-55099 Mainz, Germany); STALEY, R.J. (School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); HELLMAN, S. (Fysikum, Stockholm University, SE-10691 Stockholm, Sweden); HILLIER, S.
(School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK); RIEKE, S. (Institut für
Physik, Universität Mainz, D-55099 Mainz, Germany); SILVERSTEIN, S. (Fysikum, Stockholm University, SE-10691
Stockholm, Sweden); TAPPROGGE, S. (Institut für Physik, Universität Mainz, D-55099 Mainz, Germany); TREFZGER, T. (Institut für Physik, Universität Mainz, D-55099 Mainz, Germany); SCHÄFER, U. (Institut für Physik,
Universität Mainz, D-55099 Mainz, Germany); ANDREI, V. (Kirchhoff-Institut für Physik, University of Heidelberg,
D-69120 Heidelberg, Germany); PERERA, V.J.O. (CCLRC Rutherford Appleton Laboratory, Chilton, Oxon OX11
0QX, UK); QIAN, W. (CCLRC Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX, UK)
Presenter(s) : WEBER, Pavel (Kirchhoff-Institut fur Physik (KIP))
Session Classification : Poster sessions