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User name A. Deur
Log entry time 21:27:18 on April24,2003
Entry number 98544
keyword=sieve slit removed, position test
We accessed the hall to remove the sieve slit.
We closed the hole in the connection box with black foam + a lead plate on it (as suggested by S. Spiegel). Then we taped the edge of the foam with aluminum tape.
The beam pipe is pretty hot so maybe the beam scraps somewhere there creating the background that bother us. We will do some position test when the beam will be back in order to see if we decrease the background by stearing the beam slightly.