The next slides show an example of a

The next slides show an example of a tray flow-chart report (slides 3 -5 )and a draft tower flow-chart (slides 7 -8). Sites are marked in red, the sequence follows the actual flow of activities: • Plyform, G&A, Centrotecnica, Alenia are external contractors with their own certified quality program; they provide hardware with certificate of compliance and relevant information on the assembly and test activities performed (see slide 6 for an example) • INFN has 4 sites involved (Pisa, Perugia, Roma 2, Bari), each taking care of specific activities, all four running in parallel the tray thermal-cycle and stacked-tray burn-in and functional test In the live tracking system in use at INFN/Pisa, where all data is stored, more information is available. Activities in each site have: • a set of basic info: date, acceptance flag (OK/KO), notes (used for example in case of NCRs or in case of findings from source inspections) • for all INFN activities a traveler containing tracking data plus relevant information (e. g. vibrational frequency for ESPI and shake test) • for external activities each contractor provides a set of agreed information, with identification of assemblies sub-parts serial numbers, reference to the company internal tracking system for possible consultation on demand, some details on specific activities (see slide 6 for an example) The system is maintained at INFN/Pisa by QA office, with some parts installed in other INFN sites which send data to Pisa. Some information from the system might be available on the web, depending on time and requests. An EIDP will be released with each tower. EIDP will contain trays and tower flow-chart, mate -demate logs, test logs, list of NCRs and RFD/RFW.

Exploded view of a tray and its components

Assembly and test information on the tray bare panel as provided by Plyform

Tower assembly and test flow-chart - DRAFT Assembly of trays in tower Detailed procedure will be supported by an electronic traveler