1. ECAL Lab measurements: summer plans What we have – Fully functionnal scan setup with electron gun – 2 batches of 4 scintillators (already scanned) 4x 15x15 mm 2 (3M foil and reflective paint) 4x 20x20 mm 2 (3M foil and reflective paint) – 15 naked scintilliators (not scanned) 5x 20x20 mm 2 5x 15x15 mm 2 5x 10x10 mm 2 – A few sheets of 3M relfective foil – Functionnal analysis software

2. ECAL Lab measurements: summer plans What I would like to do – Re-scan some of the existing tiles (training) – Prepare new batches of scintillators wrap some ourselves (need glue?) paint some ourselves (need paint) – Scan new scintillators – Document full set of comparisons betwee sizes and light-containment solutions How much light do we collect? How uniform is the response?

3. ECAL Lab measurements: summer plans What we have started doing – Hardware re-cabled the entire setup (training) re-aligned electron gun with trigger check that signals are ok on the oscilloscope Note: gun was dismantled by RP during tests with another assembled gun (C. Joram) – magnetic field has changed due to change in tightness of assembly of the various metallic parts – absolute calibration is obselete – but does not affect usage (just new working point) – Software re-analyse existing data (training)

4. Measurements done by C. Joram and C. Alfieri using Hall probe Done with RP on two assembled electron guns (Note: “OLD” is ours)

5. Measurements done by C. Joram and C. Alfieri using Hall probe Done with RP on two assembled electron guns (Note: “OLD” is ours)