1. Steps towards beam commissioning: Magnet power supplies
David Clavier :: Leistungselektronik :: Paul Scherrer Institut
Steps towards beam commissioning: Magnet power supplies
SwissFEL Commissioning Workshop, 21/22 March 2016
FHNW Campus Brugg-Windisch

2. Our system Magnet Power supplies figures: (stand 2014)
Totally 789 current channels spread along the tunnel (from Z=15 to 496m.)
Mounted into 75 racks
Controlled by 280 controller cards
All PS have been already manufactured and tested (by us).
1 PS for the Septum Magnet remains to be designed.
All the Racks of the Technical Gallery have been installed.
Racks in the basement (Aramis ¬ Athos) not yet completely installed.

3. Our most important interfaces to (dependences on) other expert groups
Equipment
For commissioning
AC Supply
Critical
Cooling water
For PS above 50 Amps (43 pieces
Ethernet Network
Office Network is mandatory. Machine Network is highly wished
Connection to EPICS
For the beam commissioning
Inventory 4
Works great!

4. Our steps towards beam commissioning/operation: Hardware installation
The power supply racks are (almost) plug and play Installation and cabling is done by 9330

5. Our steps towards beam commissioning/operation: System commissioning in OSFA before beam
Commissioning procedure:
Check I/O, magnet polarity and connection
Identify the Magnet characteristics
Set the control and protection parameters
Check the analog indications
Measure the performances & write down the commissioning report
Automatic Commissioning SW for the „small“ power supplies help reducing the time needed to 2-3 hours for a full rack (21 PS).
A large PS requires almost the same time.
We can expect to achieve the commissioning of 2 to 3 units per day.

6. Our steps towards beam commissioning/operation: Handover to operation, pre-beam checks
We expect to finish the injector magnet PS commissioning before the RF conditioning starts
Strom bis 200 m.

7. What makes us worry Power outages make our work complicated
They should be announced sufficiently in advance (1 or 2 days)
Have a given duration and take place early in the morning or beginning of the afternoon.
After normalisation, the other systems (cooling, network) should be re-energised asap. Each group should commit a responsible on site for this.

8. Wir schaffen Wissen – heute für morgen
Acknowledgments
RS & JH93
9332
9360
8433…