n-XYTER Engineering Run Preparations, Introductory to Hans Kristian Soltveit´s report. Christian J. Schmidt. 14th CBM Collaboration Meeting, Split, Oct. 6 – 9, 2009. Data Driven Front-End: Asynchronous Channel Trigger. detection of statistical, poisson distributed signals.
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Christian J. Schmidt
14th CBM Collaboration Meeting, Split, Oct. 6 – 9, 2009
detection of statistical, poisson distributed signals
FASTshaper 18.5 ns
SLOW shaper(2 stages)
140 ns peaking time
Asynchronous registry and storage in 4-level fifo guarantees data loss < 4 %
when read-out through token ring
The DETNI ASIC 1.0, a front-end evaluation chip in AMS 0.35µ
...upon removal of discriminator-power decouppling
correlates with trigger
These issues are particularly important with the self triggered architecture!
They will be addressed even more in the next engineering run.
time stampfast clock
total of 4 nF
on chip MIM caps
memory control ( 9 bit )
analogue front end , PDH
comp – TWCtrim reg