TEMPETM 14 11 2013 GRZEGORZ SEWERYN THE UPGRADE

TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN THE UPGRADE OF TT SENSORS C-50 TO THE REDEL CONNECTOR 1

Overview Summary 1. What is the proximity equipment? 2. The need of DFB instrumentation upgrade 3. Decision on whether to exchange connectors in the tunnel or in the TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN laboratory 4. Replacement of Cannon C-50 to REDEL connector 5. Number of Cannon C-50 connectors to be modified 6. Validation of the replacement: Continuity and HV test bench 7. Conclusion 2

1 What is the proximity equipment? 1. Connection box which routes the current lead temperature sensors and V-taps used for circuit protection TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN 2. Drawing of the PE High current module 3

2 The need of DFB instrumentation upgrade During ELQA tests of RB circuits, lot of HV breakdowns were observed! Ø Ø The breakdown usually damaged the cryo conditioner card reading the temperature sensor. Ø TE/CRG claimed that the defect was mostly coming from the C 50 connector which is not appropriate for HV Ø As a common agreement, it was decided to upgrade this C 50 connector with a proper HV connector Ø Together with TE/CRG, it was decided to replace the Cannon C 50 connector by the REDEL SLGH 51 (Lemo) connector TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN Ø After LS 1, TE/CRG will consolidate their conditioner card, and the RB circuit will be tested at 2. 1 k. V Cannon C 50 Proximity Equipment 4

3 Do we upgrade it in the tunnel? • During a dedicated meeting among our section, we discussed the possibility of upgrading the PE in the tunnel or in the Lab: Advantages TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN 1. 2. 3. Disadvantages Only one cable disconnection is needed (C 50 -1) 1. Poor illumination 2. Very bad access to the PE No need to dismount the box from the Frame 3. Dust, noise… 4. More human resources needed No risk of damaging the fragile cable segment 5

4 Replacement of Cannon to REDEL connector TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN Cannon connector (300 V) Redel connector (3, 2 k. V) 6

5 Number of Cannon C-50 connectors to be modified Ø 16 connectors will be exchanged, all of them have been already delivered. Ø While mounting on the Proximity Equipment , a small metal plate, attached to the REDEL connector, will compensate the difference in size of the previous TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN connector. Fig 4. Redel connector modification, with aluminium plate in Auto. CAD. Fig 3. Redel connector with aluminium plate 7

6 Validation, Continuity and HV test bench Ø Ø A dedicated test bench was made for the Redel and Cannon C-50 connector tests. The test bench consists: TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN § § § Laptop with dedicated software HV crate Digital multimeter Laptop with dedicated software HV crate PE-Box Digital multimeter 8

TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN 6 Validation, Continuity and HV test bench Ø A dedicated test procedure was written Ø After each test, a report is done and stored for future reference in ELQA dedicated folder in DFS 9

TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN 7 Conclusion § Up to date, three crates are fully upgraded and successfully tested. § There are 13 more crates that need to be upgraded § The estimated date for the completion of the project is February 2014 § We do not foresee any delays 10

TE/MPE-TM 14. 11. 2013 GRZEGORZ SEWERYN THANK YOU FOR YOUR ATTENTION 11