CAT Chat Minutes
June 4, 2002
Information and Follow-up Items
1. On Saturday, June 1, Sector 9 set-up macros to run gap scans. During that
time, the beam dumped and the ID gap was never restored. The floor coordinator
was contacted to find the problem. When investigated, the cause was thought
to have been a script problem. What actually caused this error? Also, this
is not counted as downtime when in fact, it should be.
The problem was due to human error. The floor coordinator was involved with
other items when beam was restored and didnt open shutter until two hours
later. In the meantime, the control system had opened the gap to 60 mm.
Once this happens, the gap control needs to be reset or have it automatically
reset when it reaches this number. We are also looking at objective methods
for tracking individual beamline downtime, but it is not as straightforward
as it is for the storage ring.
2. Hazardous waste needed pickup at Sector 9, but it took quite awhile before
it was picked up. Why did this take so long?
Waste management has been contacted and will be more responsive in the future.
3. The new beam position prototype screens were promised to us sometime in
the near future. Approximately, when will these screens be available?
The Diagnostics group is currently working on this project. Documentation
and training sessions are needed to complete the task. We expect that in
two weeks the screens will be completed.
4.
Sector 16 is in need of space and is looking at the outer wall of the experiment
hall, underneath the mechanical mezzanine as potential space. Can this be
done?
We will look into the options for utilizing the space by the wall and develop
a proposal. In the meantime, B.
Wesolowski will meet with the CAT representatives to look at other potential
options.
5. Once again we noticed degradation in our helium flight path that was attributed
to impurities in our helium. This
is the second incident of receiving bad helium bottles. The vendor has been
contacted and will reimburse us. What can be done to prevent this from happening
again?
The "suspected" cylinders were tagged and AGA will send fill specs on the
cylinders and do an analysis of the gas in these cylinders when returned.
In the meantime, we will attempt to find a "high purity" gas that "works"
and then pull the "workable" high purity cylinder and have it analyzed as
well. If no impurities are detected, an alternative explanation is that
there could also be possible aspiration due to "poor " connections in the
helium line.
User Operations
The last six days of operation have been with high emittance singlets with
fill-on-fill every 12 hours. This
will continue until midnight tonight. After sixteen hours of studies, the
user run will continue with low emittance top-up using 23 singlets.
Six faults occurred at injection time when trying to fill-on-fill to 100mA.
An investigation is underway to understand why this does not occur when
filling from 0 mA.
A CATNET will be sent shortly in regards to 24/7 training for User Orientation
and GERT. The floor coordinator will now be able to provide both training
courses so that users can perform hands-on work on the floor. However, if
at all possible, we do prefer everyone to go through the User Office so
that the orientation process, including the issuance of a new badge, can be completed in one step.
Recently we experienced degradation in the performance of the PV gateways. The problem has been isolated to PVs that no longer exist. We are identifying and correcting the problems and hope to have
everything back to normal by the end of the week.
General Information
The checking of eyewashes will begin tomorrow, Tuesday, June 2.
A comment by one of the attendees was made that CAT Chat is a
meeting to keep alive and that hopes it will continue in the near future.
