1. String-18 Development Workshop, Overview Azriel Goldschmidt AMANDA/ICECUBE Collaboration Meeting Berkeley March 2002

2. Agenda Overview -this- DOM FPGA Firmware GTP DAQ Software -domserver layer- JEJ DAQ Software -trigger + event builder- KH Feature Extraction CB

3. Where we are…. ~37 channels usable with Universal timestamps. Slow communications, request one hit at a time, large deadtime (even with Local Coincidence) Offline “event building”

4. And we are aiming for… Dead-time free muons/Other?: –Event buffering at DOM –Fast communications –Online event building Expand capabilities Data Analyses –string-18 only –In conjunction with AMANDA/TWR/SPASE

5. Proposal for future firmware development One person (czar) in charge of each firmware (e.g GTP-DOM, KHS- DOMCOM) Released versions available to ALL Czar incorporates contributions from others through well defined and documented APIs

6. The same type of scheme for Software blocks Need at least one more DOM-application coder Need cvs-type code sharing for all DOM and DAQ software

7. Prioritized List of Milestones (open to discussion) Buffering (2 or 3 phases): Firmware +DOM App+ DAQ soft. HIGH ~weeks Fast Communications (two or more options): Firmware +DOM App+ DAQ soft. HIGH ~weeks to ? DAQ domserver software/executive HIGH ~month High level triggering HIGH as soon as previous items ready (~month) FADC readout/ ping-pong/ATWD sampling speed: (depends on physics goals) MED At DOM trigger LC? High-threshold? Combination? Prescales? (relevant in the the pre fast-comm and pre-feature extraction world) Data format LOW Data merging (aligning): GPS or extra hardware scheme LOW Data transfer: trivial only need to watch data volume. LOW

8. Other software tools RDMC, visulaization, etc, LOW Simulations: what parameters? –LC, Deadtimes, Trigger sim, low+high gain, module to module variabilities, sampling speed, single-string simulations? ATWD Studies at full ~1kHz rate Calibrations: amplitudes, flasher measurement, very long light pulses