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LPROT preliminary data

LPROT preliminary data

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LPROT preliminary data

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  1. LPROT preliminary data TE/MPE/PE EN/STI EN/MME

  2. History • >8 yr ago. Simulations from N. Tahir and CERN pointed that a tunneling process happens when a high-intense high-dense beam interacts with matter. • Verena & Rüdiger experiment at SPS. • Couple of years ago, SPS experiment idea. • Last year, HiRadMat facility experiment request.

  3. SPS material test Zinc, stainless steel, copper and INCONEL Verena Kain (2005) 11 12 • Four intensities [SPS-beam type @ 450 GeV • 1.1x0.6mm sigma]: • A=1.3x1012, B=2.6x1012, C=5.3x1012, D=7.9x1012 16 17 The experiment confirms the 5% (2.3e12 p) equipment damage level @ 450GeV Cu plates (simulations predicts plate 18th 1st to melt)

  4. Pressure evolution (0.5mm)

  5. Location of HiRadMat

  6. Layout of Experimental Area Largetest object Smalltest objects • Flexible optics to provide beam radii of s = 0.1 to 2.0 mm at the focal points. • Focal point longitudinal location continuously variable between positions 1 and 3. • Predefined optics for 3 focal points and 6 beam sizes. BTV

  7. Experiment

  8. Experiment • Target assembly done in collaboration with EN/STI • Diamond detectors + associated electronics, designed specifically for this experiment in collaboration with EG (Erich Griesmayer) • Strain gauges in collaboration with EN/MME

  9. Installation

  10. Installation

  11. Phase I (22-Jun/6-Jul), Beam summary • 71 low intensity single bunch shots (2E9-1E10 p+) • 85 high intensity single bunch shots (1E11-2E11 p+) • 8 high intensity multi-bunch shots (1.5E11 p+)

  12. Diamond detector signal 1 bunch low intensity 20dB attenuation Magenta = first diamond detector (z=40cm) Green = second diamond detector (z=50cm) Blue = third diamond detector (z=120cm)

  13. Diamond detector linearity Detector signal versus beam intensity

  14. Diamond detector linearity • Diamond detectors have a good linearity for a wide intensity range. • Tested different bias voltage across the detectors and its influence on the signal. • Other characteristics also understood and in process of understanding.

  15. Diamond FWHM

  16. Multi-bunch 6 bunches 40 dB attenuation Intensity=8.47E11p+

  17. Multi-bunch 1.9E11p+ per bunch, 6 bunches.

  18. Multi-bunch 12 bunches 40 dB attenuation Intensity=8.32E11p+

  19. Multi-bunch ~1.9E11p+ per bunch, 12 bunches.

  20. Multi-bunch • Offset after second bunch of 50mV. Coming from electronics. • No signal pile-up. • No offset pile-up. • Diamond signal linear for every bunch.

  21. Photographic paper

  22. Photographic paper

  23. Photographic paper

  24. Photographic paper

  25. Strain Gauges

  26. SEM detectors

  27. SEM detectors

  28. Microphones

  29. Microphones

  30. Microphones

  31. Microphones Target 3 Single bunch 4.5E10 protons Beam sound

  32. Conclusion • We were ready for phase II. • Refine beam pulse list for phase II (Tuesday 10-July)

  33. Phase II (12-July-2012)

  34. Target 1: 2mm sigma beam (no tunneling expected) -> base shot • Target 3: 0.2mm sigma beam -> tunneling expected

  35. Simulations 12th block 5th block 4th block Simulations: different beam size, beam intensity, Nbunches, bunch spacing.

  36. Analysis of the data • Analyze and correct the data from the instrumentation • Update simulations with experiment parameters • Visual inspection of the target • Compare: simulations / data from experiment / visual inspection

  37. PRELIMINARY DATA/INTERPRETATIONFROMHIRADMAT EXPERIMENT

  38. 1. Raw signal

  39. Target 1 144 bunches

  40. Target 3 144 bunches

  41. Microphones Target 3 Single bunch 4.5E10 protons Beam sound Target 3 Single bunch 144 bunches 1.5E11 protons/bunch Beam sound

  42. Diamond Detectors Background

  43. Diamond 1, target 1,3

  44. Diamond 2, target 1 vs 3

  45. Diamond 3, target 1 vs 3

  46. 1.A (target 1 – target 3 signal)

  47. Diamond 1, target 1 – target 3