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Serial Powering Updates

Serial Powering Updates. E.G.Villani on behalf of SP Community STFC Rutherford Appleton Laboratory. 1. Serial Powering system design. The power to the chain of loads in the SP scheme is provided by a current source. I src.

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Serial Powering Updates

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  1. Serial Powering Updates E.G.Villani on behalf of SP Community STFC Rutherford Appleton Laboratory 1

  2. Serial Powering system design The power to the chain of loads in the SP scheme is provided by a current source Isrc • initially a standard power supply, in protection mode, was used • a first dedicated current source (CS) prototype was designed, built and tested: very good performances (J.Stastny, ASCR) 2

  3. Serial Powering system design programmableCS version 2 block diagram • a more flexible and optimized programmableCS has been specified and is being prototyped (J.Stastny, ASCR) • specifically designed for stave09 • it should work well also for next development involving ABCN130 3

  4. Serial Powering system design Current Source ver.2 specifications: Input Voltage 90 - 264 VAC Input Frequency 47 - 63 Hz Input Power 800 W (max) Output Current range 0 – 6 A Output Current Setting Resolution 2 mA Output Current Settling Time < 2 ms Voltage Compliance 0 – 80 V Voltage Resolution 25 mV Output Current Ripple (Pk-Pk) 10 mA (estimated max) Control Manual / Remote(USB) Mechanical Dimensions (W x D x H) 305 x 280 x 133 mm 4

  5. Stavelet construction progress Liverpool have: • Built two prototype stave cores (HC, pipes, Pocofoam etc). • Run cooling trials to gain confidence things are bonded well. • Done test gluing of bus cables to stave. • At RAL we expect to have a core with bus tapes etc by mid – late February. • Tony Affolder is in the process of making the modules for the stavelet. These are also expected mid-late February. RAL expects to: • Start placing modules as soon as they arrive and are tested. • Module mounting tooling is almost complete. • We have been testing gluing patterns for coverage. • Appropriate cooling is being put in place. 5

  6. Stavelet construction progress at RAL Glue pattern trials (left - on test board , right – on test bus cable) Module placement area Module placement arm Rotate stage Y stage ZX stages Stavelet test box 6

  7. Protection board assembly and testing Plug in boards for testing different serial powering schemes to be mounted onto PPB provided by BNL (received last week) 7

  8. Conclusions • Latest developments on SP at RAL include: • Current source ver.2 specification and start of design. • Setup for Stavelet construction almost ready. • Protection circuitry (11) delivered from BNL and SPI plugins (2) from IZM; we are now proceeding with their testing and then mounting on stavelets. 8

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