14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

Digital camera with LED monitoring

Status:

Photographs of SPD are completed from both top and bottom. The PS1 and PS2 are done in the bottom part. To go ahead the problem is an access.

The quality of pictures is good except in the first part (SPD5-8 bottom), where it was luck of experience, so the quality was just satisfactory.

The first look shows correlation between installation data and cosmic test and current measurements. The total number of not working LED’s is ~0.5%, that was at the installation.

Some problems with fibres are identified. The broken fibre shown on SPD6 bottom is confirmed with cosmic data. Further analysis is ongoing but time consuming.

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD SM6 bottom

Fiber problem

LED problem?

Confirmed with cosmic data

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

PS1 bottom “C” side

Left cable Right cableCentral cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

PS2 bottom

Left cable Right cableCentral cable

Orientation -135 degree ?!

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD1 bottom “C” side

Left cable Central cable Right cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD2 bottom

Left cable Central cable Right cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD3 bottomLeft cable

Right cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD4 bottom 1-6 cables

Left cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD4 bottom 7-11cables

Right cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD5 top 1-6 cables

Left cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD5 top 7-11 cables

Right cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD6 top

Right cable

Left cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD7 top

Left cable

Right cable

14 February 2007 Calorimeter commissioning meeting, CERN

E.Guschin (INR,Moscow)

SPD8 top

Right cable

Left cable