Luminosity Spectrometer Electronics

FEE specifications

Event Size (1byte)

Bunch crossing (1byte)

Zero Suppression (2bytes)

Energy Sign (2bytes)

Energy Sum (2bytes)

Data (Nx2bytes)

VME word size

4 bytes

Words per board (16 channels)

8+2=10 words

Total Event Size (13 boards)

130 words

Time needed to read out one word

0.2 microsec/word

Readout time for full event

130 words x 0.2 microsec/word = 26 micsec/event

Maximum Estimated Readout rate

30 KHz

Power PC

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If you have comments or suggestions, email me at paganis@nevis1.columbia.edu