Ice Cube Ice Top AMANDA South Pole Skiway
Ice. Cube Ice. Top AMANDA South Pole Skiway 80 Strings 4800 PMT Instrumented volume: 1 km 3 (1 Gt) Ice. Cube is designed 1400 m to detect neutrinos of all flavors at energies from 107 e. V (SN) to 1020 e. V 2400 m
DAQ design: Digital Optical Module - PMT pulses are digitized in the Ice Design parameters: Time resolution: ≤ 5 nsec (system level) Dynamic range: 200 photoelectrons/15 nsec (Integrated dynamic range: > 2000 photoelectrons) (1. p. e. /10 ns ~ 160 m. A 10^7 G ~8 m. V 50 W) 4 V saturation 500 p. e. Digitization depth: 4 µsec. Noise rate in situ: ≤ 500 Hz Tube trig. rate by muons 20 Hz DOM 33 cm
Capture Waveform information (MC) ATWD 300 MHz String 1 14 bits. 3 different gains (x 15 x 3 x 0. 5) Capture inter. 426 nsec 10 bits FADC for long duration pulse. Events / 10 nsec 0 - 4 µsec String 2 String 3 String 4 nt E=10 Pe. V String 5
In three years operation… TAUP 2003 E 2 d. Nn/d. E ~10 -8 Ge. V/cm 2 s sr (diffuse) E 2 d. Nn/d. E ~7 x 10 -9 Ge. V/cm 2 s (Point source) 200 bursts in coincidence n(GRBs – WB o i t flux) c e t e d s 5 r o F
Construction: 11/2004 -01/2009 Grid North 100 m AMANDA South Pole SPASE-2 Dome Skiway Next season: Buildup of the Drill and Ice. Top prototypes
TAUP 2003 Project status Startup phase has been approved by the U. S. NSB and funds have been allocated. 100 DOMs are produced and being tested this year. Assembling of the drill/Ice. Top prototypes is carried out at the pole this season. Full Construction start in 04/05; takes 6 years to complete. Then 16 strings per season, increased rate may be possible.
- Slides: 6