Sept 2000E. Auffray, P. Lecoq, EP-CMA Results on the 100 R&D EndCap crystals measured in RCCERN on ACCOCE2 E. Auffray, P. Lecoq CERN EP-CMA.

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Sept 2000E. Auffray, P. Lecoq, EP-CMA Results on the 100 R&D EndCap crystals measured in RCCERN on ACCOCE2 E. Auffray, P. Lecoq CERN EP-CMA

Sept 2000E. Auffray, P. Lecoq, EP-CMA  We have received 100 polished Endcaps crystals in June2000 from Bogoroditsk: –all have been tested in CERN RC »Visual Inspection, »Characterised with ACCOCe2 : 1st operation of the 2nd Accos machine in CERN RC

Sept 2000E. Auffray, P. Lecoq, EP-CMA Longitudinal Transmission 360nm 420nm 620nm

Sept 2000E. Auffray, P. Lecoq, EP-CMA Longitudinal Transmission at 420nm 100 Endcaps Crystals Barrel Crystals Batch09

Sept 2000E. Auffray, P. Lecoq, EP-CMA Light Yield Barrel polished crystals from Batch09 Endcaps polished crystals

Sept 2000E. Auffray, P. Lecoq, EP-CMA Light Yield Non uniformity Barrel polished crystals from Batch09 Endcaps polished crystals FNUF

Sept 2000E. Auffray, P. Lecoq, EP-CMA Lateral Irradiation at saturation Barrel polished crystals from Batch09 Endcaps polished crystals

Sept 2000E. Auffray, P. Lecoq, EP-CMA Considerations about Endcap crystals  After 2 years of R&D in Bogoroditsk –They have demonstrated that they can produce endcap crystals of similar quality than barrel crystals –Could be OK for at least 25% of endcap crystals –They have not yet achieved the rad. hardness specs for the most exposed endcap crystals