1. Matthew Moulson for the LAV Working Group NA62 Photon-Veto Working Group Meeting CERN, 5 January 2013 LAV construction & installation status

2. LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 05 February 2013 Summary: Where we stand 2 A1-A3Installed, cabled, read-out in technical run A4-A8Installed, ready for cabling A11At CERN, ready to install A9 & A10 Vessels under construction at Fantini Bananas under construction at Frascati No real changes from last meeting

3. LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 05 February 2013 Cabling and operations in ECN3 3 A1-A3 cabling Full test of signals from all installed detectors Threshold scan in situ? Adjustments to rack cabling A1-A3 Move HV crate upwards in rack Protection for cables protruding from front of rack Cable A4-A5 a la A1-A3 Develop cable routing for A6-A8 To be done this spring

4. LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 05 February 2013 A9-A10: Status of vessels 4 Progress on A9: End flanges welded before winter shutdown Recently finished first turning on vertical lathe Progress on A10: Vessel welded and weld tested End flanges straightened on lathe – planarity checked Progress in parallel (A9 and A10): DN200 nozzles complete and ready to be welded DN630 manholes lathed and ready for final work on milling machine DN100 nozzles lathed Work on support structures in progress: Carpentry and foot plates ready Ready to begin working pieces in Bronal (threaded rods, foot cups)

5. LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 05 February 2013 Work in progress at Fantini 5 A9 lathingA10 vessel welding and weld testDN200 nozzle on lathe

6. LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 05 February 2013 Work in progress at Fantini 6 DN200 nozzles Support structures DN630 manhole

7. LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 05 February 2013 Work in progress in Frascati 7 A9: 60 of 60 bananas ready A10: 27 of 60 bananas ready 49 blocks ready (→ 12 bananas)

8. LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 05 February 2013 Conclusions 8 Still expect A9 vessel to be delivered week of 11 March 2013 A9 banana assembly complete A10 banana assembly will be complete before A10 delivered