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Stavelet Update

Stavelet Update. PWP 18/03/2011. Stavelet Numerology. The Stavelet. G&S Improvements. Aluminium baseplate under Stavelet Frame. Tape to Frame. Tape to Stavelet Core. Screened HV Pairs. EoS STARPOINT. Screened LV Pairs. SHIELD STARPOINT. Litz between EoS

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Stavelet Update

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  1. Stavelet Update PWP 18/03/2011

  2. Stavelet Numerology The Stavelet

  3. G&S Improvements Aluminium baseplate under Stavelet Frame Tape to Frame Tape to Stavelet Core Screened HV Pairs EoS STARPOINT Screened LV Pairs SHIELD STARPOINT Litz between EoS and Shield grounds Chokes fitted to Control Ribbons Aluminium cover connected to baseplate with Cu Tape

  4. External HV Filter Implemented within diecastbox (PCB made for future examples)

  5. External LV Filter SP+ 10uF 220nF SP+ SP- 10uF 220nF SP- FROM PSU Screened LV cable to Stavelet (screen is connected to shield)

  6. Jan Stastny’s Current Source:Current Noise, Stavelet running at 5A COM ABCN COMMAND ISP DATA After G&S Improvements & with Internal Filter Before G&S Improvements, without Internal Filter

  7. 25th Feb 2011 Jan Stastny Current Source at 5A, 230V bias, ALL MODULES ON

  8. 3rd Mar 2011 COMPOSITE Jan Stastny Current Source at 5A, 230V bias, ODDS AND EVENS

  9. ENC Differences

  10. WORK IN PROGRESS Double Trigger Noise

  11. Diff Probe between hybrid SP+ & SP- JS CS @ 5A, HV 230V, Two L1A seperated by 134 BCO, Scope in AVERAGING MODE COM dV DATA HYBRID 0, BWL ON HYBRID 1, BWL ON

  12. Diff Probe between hybrid SP+ & SP- JS CS @ 5A, HV 230V, Two L1A separated by 134 BCO, Scope in AVERAGING MODE COM dV DATA HYBRID 6, BWL ON HYBRID 7, BWL ON 150nS = 6 BCO This matches the gap between bands in the double trigger noise occupancy plot

  13. dVvs Hybrid Number Hybrids with gross Double L1A Occupancy dV (mV) Hybrids without gross Double L1A Occupancy SP- SP+ Hybrid

  14. Double Trigger Noise OccupancySingle Module, ~0.5fC threshold

  15. Need AC HV connection to second hybrid?

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