1. Diamond detectors for the LHCb upgrade M. Artuso, A. Borgia, J. Garofoli, R.Mountain, P.Urquijo, J. Wang, Z. Xing 5/5/20101Marina Artuso Velo Upgrade Meeting

2. The goal  Produce viable solution based on diamond detectors at least for innermost tiles of detector planes.  The contenders are planar Si (various technologies), 3d silicon (rd50 Glasgow- CNM), pCVD diamonds (cost issues)  scCVD diamonds studied (FNAL test beam)  Decision of detector technology should be finalized by Jan 2012.  Note: we are aiming at 2016 for completion and we do not depend upon SLHc for the planned luminosity upgrades. 5/5/20102Marina Artuso Velo Upgrade Meeting

3. Outline of the work  Commission test stand with sample single dot diamond with the geometrical parameters shown in this figure  Characterize in the same way 4 diamonds produced by DDL with sources  Deposit strips and test these devices in beam with VA2 readout  Produce LHCb VELOPIX single pixel hybrids 10.13 mm 8.73 mm diam Diamond (bulk) rough-cut edges 5/5/20103Marina Artuso Velo Upgrade Meeting metallization

4. Charge collection distance (scale uncertain by ~20%) 5/5/20104Marina Artuso Velo Upgrade Meeting

5. Plans 5/5/2010Marina Artuso Velo Upgrade Meeting5  Finish characterization with source ~ 1 week  Next strip detectors (2-4) for test beam in June  In fall two devices bump bonded with Timepix, to understand performance with time over threshold (not good for irradiation studies) [with Si threshold as low as 750 electrons]  Irradiation program with hybrid pixel modules [pCVD diamond + Medipix3]  More diamonds will be acquired from DDL and other vendors