Photos during the September 2008 upgrading

During the upgrading on September 2008: 1) the shield has been opened in HP Nitrogen atmosphere in order to replace 1 PMTs and apply some improvements; 2) all the transient Digitizers have been replaced by new higher performance ones; 3) new DAQ with optical read-out.

Working in HP Nitrogen atmosphere:

The shield is re-opened in HP Nitrogen atmosphere

Re-opening the inner Cu box in HP Nitrogen atmosphere

Monitoring the oxygen level

At work

The upper glove-box 1

Inst The upper glove-box 2