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Published byErick Stephens Modified over 8 years ago
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KM3NeT M. de Jong Staff overleg 12 Mei 2005
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M. de Jong, P. Kooijman, G. v.d. Steenhoven, E. de Wolf (R. v. Dantzig, J. Engelen, P. de Witt Huberts, J. Oberski) M. Bouwhuis, R. Bruijn, C. Colnard, G. Lim, B. v. Rens, G. de Vries (A. Heijboer) E. Heine, J. Hogenbirk, L. Kruijer, H. Peek (E. Kok, P. Rewiersma) R. v. Wijk, G. Venekamp E. Berbee, … B. Verlaat KVI: N. Kalantar, H. Loehner Who?
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What? Very large neutrino telescope(~20 x Antares) Cost: ~200 M € (~10 x Antares) Somewhere in the Mediterranean sea Antares + Nemo + Nestor + associated scientists Design Study
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NIKHEF contributions to Antares “All-data-to-shore” concept –DWDM –PC farm (‘tier 0’) –Online software (Run control, Trigger, monitoring) Electrical power system Passive cooling design Reconstruction Physics analyses
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Focus Explore DWDM technology(75%) Optical module design(5-25%) Software trigger(75%) Production of detector units(1/5)
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DWDM technology Optical multiplexing Modulation of light Fiber optics expertise @ NIKHEF High bandwidth (~Tb/s) signal transmission
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Optical module design Small PMTs –Segmentation of photo-cathode (2 hit resolution!) –Solid angle versus photo-cathode area Time-over-Threshold discriminator –Analogue multiplicity counter Optimise Signal / Noise at PMT level
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DWDM + T-o-T + Modulation ~No offshore electronics
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Software Trigger Fast algorithms Flexible design Extendable PC farm More Physics
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Production (1) Optical module assembly 250-500 bar ~5 / day Pressure test
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Production (2) Line assembly ~500 m ~1 / week ~25 optical modules / line E/O cable
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Production (3) Calibration
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Production (4) Pylos Sicily Pylos
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Summary Excellent opportunity for NIKHEF to play a leading role in an important experiment Technology –Collaboration with industry –High-tech fiber optics –State-of-the-art software –‘Tier 0’ design PC farms Excellent prospects for exciting physics –Great discovery potential –Attractive outreach program
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