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Physics

Electrical Discharge Circuit for CNGS Horn & Reflector PH/DT1 Group Meeting, 23 October 2007 Gilles MAIRE PH/DT1-IC Section Leader. Physics. At CERN Protons extracted in point 4 of SPS. Pions & Kaons after Target. Muons Neutrinos after Decay Tunnel. At Gran Sasso Opera Detector.

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Physics

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  1. Electrical Discharge Circuitfor CNGS Horn & ReflectorPH/DT1 Group Meeting, 23 October 2007Gilles MAIRE PH/DT1-ICSection Leader

  2. Physics • At CERN • Protons extracted in point 4 of SPS. • Pions & Kaons after Target. • Muons Neutrinos after Decay Tunnel. • At Gran Sasso • Opera Detector. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 1

  3. Horn and Reflector PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 2

  4. IntroductionHorn and Reflector (Load) • 7 m long (approx.) • 1.6 tonne (approx.) PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 3

  5. Horn Picture PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 4

  6. Electrical Circuit PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 6

  7. Electrical Parameters TR. Pulse Th. Disch. HV Capa. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 5

  8. General View Charging Power Supply in surface Horn and Reflector In Target Chamber Power cables (~1000m) along Access Galleries Pulse Transformer In Service Gallery Strip Lines from Transformers to Horn & Reflector PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 7

  9. Layout in BHA4 3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 8

  10. Cross section in underground Transformer Load 4th NBI, 7 - 11 November 2003 at KEK by Gilles MAIRE 9

  11. Charging Power Supply Old Electronic New Electronic AB/PO Group 6U 24U PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 10

  12. Charging Power Supply • Need to increase charging voltage to 10kV. • Buy new transformer (LV/HV), call for tender for 3 units for a cost of 30kchf. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 11

  13. Charging Power Supply • New HV Rectifier Diode • Need to increase charging voltage. • Call for tender for 30 units for a cost of 30kchf. Old • Results • Space saving. Number of diodes divided by 2. New PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 12

  14. Capacitors Discharge • New capacitors • 12 racks with a total of 48 capacitors. • Call for tender for a cost of 350kchf. • Results • Space saving. Number of racks divided by 3. • Important cost saving (300kchf) for infrastructure and cabling. Rack with WANF capacitors Rack with New capacitors PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 13

  15. Discharge Circuit Old • New Inductance • Call for tender for 12 units for a cost of 40kchf. • Results • Space saving. Number of inductance divided by 6. New PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 14

  16. Thyristor Switches (20kV, 18kA) • New Th. Discharge • All Th. Switches needed have been bought and delivered by ARCEL (FR). • 6 units for 150 kchf. • 3 thyristors in series, sharing resistor, RC snubber and impulse transformer. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 15

  17. Pulse Transformers • Pulse Transformer • Reusing WANF Transformers ratio 32. • Adaptation ratio 16 for Horn. • Cost saving 450kchf. Ratio 16 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 16

  18. 18kV Power Cables • Power cables • Call for tender for 6 X 1km (4X95mm2), have been bought and delivered by PIRELLI. Cost of 350kchf. • 80kchf for laying. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 17

  19. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 18

  20. 18kV Power CablesConnection Connection in BHA4 Junction in ECA4 Connection in TSG Electrical & Continuity Test 20th January 2006 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 19

  21. d i g i t a l Control UNICOS CESAR Logging Alarms POW protocol - CMW Control Room supervision PVSS Supervisor in BHA4 Ethernet Network VME, TG8, MIL1553, G64 Surface BHA4 Underground Horn’s interlocks FIP Bus REMOTE I/O Interlocks POWER CONVERTER DISCHARGE CIRCUIT EARTH & POLARITY Interlocks Designed by Sylvain RAVAT EP/TA3 Designed by Sylvain RAVAT EP/TA3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 20

  22. Control in Surface (BHA4) • Schneider Unity. • UNICOS. • Programming Process. • Hardware interlocks. PLC Rack in BHA4 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 21

  23. Control in Underground • FIP I/O and conditioning signal. • Cooling Unit. Remote I/O in TSG Instrumentation of Cooling Unit in TSG PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 22

  24. PVSS Electrical View Designed by Sylvain RAVAT EP/TA3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 23

  25. PVSS Hydraulic View Designed by Sylvain RAVAT EP/TA3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 24

  26. Hydraulic View • Trending. • Historical. • Alarm. Designed by Sylvain RAVAT EP/TA3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 25

  27. Commissioning in May 2006 50ms Double pulse for Horn. Time pulse of 6,5ms conform with simulation 150kA 50ms Double pulse for Reflector. Time pulse of 10ms conform with simulation 180kA Designed by Sylvain RAVAT EP/TA3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC 26

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