1. ISO 9001:2008 CERT. N. 9105.CAEN Alessandro Iovene a.iovene@caen.it Electronic Instrumentation www.caen.it

2. Reproduction, transfer, distribution of part or all of the contents in this document in any form without prior written permission of CAEN S.p.A. is prohibited FTK Power Supply – Proto0 A first prototype of the power supply has been designed and produced to be tested in the USA15@CERN infrastructure for temperature/air-flow tests. Form Factor: 19’’/ 10U Two independent secions to power-up two VME crates, each one with: No.1 PowerBox 48V/50A tri-phase No.1 COSEL PBA1500T 5V/300A (for this proto0 limited to 100A) No.2 COSEL PBA1500F 12V/100A in a parallel conncection config. (12V/200A) Key-points: - Designed to maximise the vertical air-flow (required by the ATLAS rack infrastructure) - Designed with big copper busbars connection to reduce the power drop - Each line with independent ON/OFF switch

3. Reproduction, transfer, distribution of part or all of the contents in this document in any form without prior written permission of CAEN S.p.A. is prohibited FTK Power Supply – Proto0 48V PSU 12V PSU 5V PSU ON/OFF switch Input power connectors

4. Reproduction, transfer, distribution of part or all of the contents in this document in any form without prior written permission of CAEN S.p.A. is prohibited FTK Power Supply – Proto0 CONCLUSIONS One CAEN FTK Proto0 power supply is now at CERN for tests. We are waiting for the results of the tests at USA15 to see if the power supply structure fits the air-flow requirements. We are also waiting for the final power requirements of each power branch to finalize the design of the final prototypes.

5. Reproduction, transfer, distribution of part or all of the contents in this document in any form without prior written permission of CAEN S.p.A. is prohibited CAEN S.p.A. Via Vetraia, 11 55049 Viareggio - Italy Tel. +39.0584.388.398 Fax +39.0584.388.959 info@caen.it www.caen.it