1. News – 22 September 2010 Still more refinements on the understanding of the timepix calibration  We are now at the ~20 electron level of precision  Propose to periodically update Marina’s summary from 22/09.  New Information: In a train of n testpulses, first testpulse is systematically low by ~ 8 mV (even when n=1) The testpulse offset has a small linear dependence on the testpulse value Also have established that DUT had a depletion voltage of ~10 (not ~100) Volts. Hence we operated significantly overdepleted, and measured a worse perpendicular resolution than necessary. However what we measured is probably appropriate for LHCb operating conditions 1

2. Electronics & readout meeting: Doodle poll to establish availabilities: date set for 7 th December in Oxford (many thanks to Andrei). EVO for those who cannot make it. LOI is still in iteration: Please take the opportunity to read/comment/contribute if you did not already do so  The strawman module drawing will be updated  Information on material will be added March 11 th LHCb Upgrade Meeting Paula Collins 2

3. Testbeam 2009 publication Progressing slowly Some new results shown today Remaining areas:  High number of unused clusters mystery  Track extrapolation precision simulation/data mismatch LHCb Upgrade Meeting Paula Collins 3

4. Status of 2009 paper (some movement) https://gligorov.web.cern.ch/gligorov/timepixpaper.pdf Comments welcome at any stage https://gligorov.web.cern.ch/gligorov/timepixpaper.pdf Thanks to our heroic editor Vava! (no need to polish your figures etc. he will do this) Status of the sections:  Timepix chip description (RP)  Timepix Telescope description (RP)  Determination of calibration parameters and threshold (MA)  Clustering algorithm & results (PC, VG, ZX)  Tracking (PC)  Alignment (PC,JG)  Track Pointing Precision (PC)  Data Sets (PC)  Determination of zero angle (ZX)  General Cluster characteristics (looking for a volunteer!)  Landau distributions in DUT (Syracuse)  Efficiency and noise as a function of threshold (HG)  Timewalk (MvB)  Pulseshape (Syracuse)  HV Scans (Syracuse)  Angle Scans – clusters (Syracuse)  Angle Scans - resolutions (PC)  45 degree data angle scans (Syracuse)  Row column asymetries (TM, FB)  Ikrum scans (DH)  3d sensor (GS) 4 Text and plots exist Plots exist – text on the way Work to do