MHATT-CAT Useful Operational Data for Run 1 of FY03, Nov. 2002
Eric Dufresne, Dohn Arms, Don Walko
Started Nov. 2, 2002
Saturday, Nov 02, 2002. Time series started at 00h52 with a 0.2 mm
by 0.2 mm (V) white beam, with the mono at 8.979 keV, 7ID at 9.06 keV.
Fig. 11-02.1, Fig. 11-02.2, and Fig. 11-02.3 show the usual parameters in a 21
hour long time serie started at 00h52. The APS ran smoothly during the night.
Don Walko filled the LN2 cryocooler vessel on 10/29/02. This clearly affected
the beam motion on measured in 7ID-C, not so much its amplitude but its shape.
(see Fig. 11-02.2) The LN2 fill of the cryocooler is still observable in the
beam position in 7ID-C as a ~4 hour periodic motion, but compared with
Fig. 10.27.2, the beam motion is qualitatively different. Note that the data for
11/02 shows significantly more pronounced horizontal beam motion than before.
The last time the closed loop was filled was on 10/7/02.
Fig 11-02.1. Time series of the beam intensity in 7ID-C, starting at
00h52 on 11/2 and
lasting 21 hours. The 7ID-C diode sum, the ring current, ion chamber in B and C
are shown. Hutch access in 7ID-C creates dip in the data.
Fig 11-02.2. The beam position, 49.2 m from the source, or 19 m from the
High Heat Load
mono in 7ID-C during the same time series as Fig. 11-02.1.
Fig 11-02.3. The beam position, 49.2 m from the source, or 19 m from the
High Heat Load
mono in 7ID-C deduced by the APS BPM monitor P1 and P2,
extrapolated for motion at
49.2 m from the source during the same time
series as Fig. 11-02.1.