1. Electrical Discharge Circuit for CNGS Horn & Reflector PH/DT1 Group Meeting, 23 October 2007 Gilles MAIRE PH/DT1-IC Section 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-IC1

3. Horn and Reflector PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC2

4. Introduction Horn and Reflector (Load) 7 m long (approx.) 1.6 tonne (approx.) PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC3

5. 4 Horn Picture

6. Electrical Circuit PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC6

7. UnitHORN SystemREFLECTOR System Load Peak currentkA150180 Transformer ratio1632 Primary current peakA93755625 Load inductanceµH2,7 X 16 X 16 = 6911,5 X 32 X 32 = 1540 Total inductance with 4 cablesµH12102046 Load resistance mm 0,6 X 16 X 16 = 1540,21 X 32 X 32 = 215 Total resistance with 4 cables mm 328495 Total capacitance for one pulseµF4080 Pulse durationms7,510 Charging voltageV77006300 Total stored energykJ2 X 119 = 2382 X 80 = 160 Load max. voltageV280150 Mean power dissipated by current only (2 pulses) kW1610,5 Total power dissipated (with beam)kW2616,5 Water flow for delta T=5Cl/min70 Pressurebar1,2 Electrical Parameters PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC5 HV Capa. Th. Disch. TR. Pulse

8. General View Horn and Reflector In Target Chamber Charging Power Supply in surface 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-IC7

9. Layout in BHA4 3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC8

10. Cross section in underground 4th NBI, 7 - 11 November 2003 at KEK by Gilles MAIRE9 Transformer Load

11. Charging Power Supply Old Electronic New Electronic AB/PO Group 24U 6U PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC10

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-IC11

13. Charging Power Supply Old New  New HV Rectifier Diode Need to increase charging voltage. Call for tender for 30 units for a cost of 30kchf. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC12  Results Space saving. Number of diodes divided by 2.

14. Capacitors Discharge Rack with New capacitors  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 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC13

15. Discharge Circuit Old New  New Inductance Call for tender for 12 units for a cost of 40kchf. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC14  Results Space saving. Number of inductance divided by 6.

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-IC15

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-IC16

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-IC17

19. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC18

20. Connection in BHA4 Junction in ECA4 Connection in TSG Electrical & Continuity Test 20th January 2006 18kV Power Cables Connection PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC19

21. Control Designed by Sylvain RAVAT EP/TA3 latigid PVSS Supervisor in BHA4 DISCHARGE CIRCUIT POWER CONVERTER Designed by Sylvain RAVAT EP/TA3 Control Room supervision VME, TG8, MIL1553, G64 POW protocol - CMW UNICOS CESAR Logging Alarms Horn’s interlocks Interlocks Ethernet Network EARTH & POLARITY Interlocks REMOTE I/O FIP Bus Surface BHA4Underground PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC20

22. Control in Surface (BHA4) PLC Rack in BHA4  Schneider Unity.  UNICOS.  Programming Process.  Hardware interlocks. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC21

23. Control in Underground Remote I/O in TSG Instrumentation of Cooling Unit in TSG  FIP I/O and conditioning signal.  Cooling Unit. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC22

24. PVSS Electrical View Designed by Sylvain RAVAT EP/TA3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC23

25. PVSS Hydraulic View Designed by Sylvain RAVAT EP/TA3 PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC24

26. Hydraulic View Designed by Sylvain RAVAT EP/TA3  Trending.  Historical.  Alarm. PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC25

27. Commissioning in May 2006 Designed by Sylvain RAVAT EP/TA3 50ms 150kA 180kA 50ms Double pulse for Horn. Time pulse of 6,5ms conform with simulation Double pulse for Reflector. Time pulse of 10ms conform with simulation PH/DT1 Group Meeting, 23 October2007 by Gilles MAIRE PH/DT1-IC26