Electronic Report

Pigi

HV-LV-ADC status

• Sometimes “repaired boards” are not working properly and so I would like to propose you to:– Test and qualify “broken” boards at 904 before sending it at

pool– Test very carefully the “repaired” boards at 904 before

installing them in the system• In this way we can save money (1 KCHF per board) and

time• 904 test setup is now ready thanks to Hassan, Anton and

Giovanni.• Hassan will be in charge of the setup and test procedure.

HV insulators• We have 10 “new generation” of HV insulators in data

taking since one year. • No problem observed.• The 10 custom insulators produced in Napoli are under

test at 904.• One HV channel broken due to a bad mechanical

connection. Broken connector• We have a final setup in Napoli to build the insulators.

The sizes of the connector is now under control and this should avoid the problem we had on the CAEN connector.

Action items

• New firmware installation• HV board calibration by CAEN• LV check • MAO test• Cable and connector to replace (Y and short)