¥The technique used to
monitor the stability is sensitive to both the variations in cable delay and
the variations in trigger timing (for example, variations in the electronics
used to generate the FASTBUS gates).
¥The temperature
variations in the tunnel are too slow to change the electronics in the tunnel
over a period of 15 - 25 minutes.
¥The variations of the
temperature in the electronics room are rapid and could produce the fine
structure observed.