Greetings all,
This week the ATF was in a planned installation shutdown and some
beam studies. Not much to report.
Ilan Ben-Zvi.
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VISA
Experiment (Reported by Lowell Klaisner) |
Schedule for the VISA experiment
Week of:
August 30 Complete CMM measurements of undulator sections at SLAC
and ship to BNL.
September 6 Set up first sections in magnetic measurements. Nuts
for adjusters sent from SLAC to BNL.
September 13 Begin magnetic measurements.
September 20 George Rakowsky and staff will be measuring the NSLS
superconducting wiggler.
September 27 Magnetic Measurements will be completed.
October 4 Assemble, test alignment procedures and pump down the undulator
in
the lab. The pop-ins will be complete and installed at this time.
October 11 One week ATF shut down to install and align the undulator
on the beam line.
Notes: The jobs listed in the week of October 4 will probably take
two weeks and the shut down for installation will need to be postponed
to the week of October 18.
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ATF
Operations (Reported by Xijie Wang) |
1. We had VISA beam line safety walk-through, and several items
come to our attention.
First is the handling alignment laser, please practice common sense
when using them, such as close the shutter when not in use, and
warning people who pass by. Second is a power outlet not properly
attached to its support. Third is an ion pump support rod coupling
which became loose.
2. Clean up ATF computer system: Next Tuesday afternoon, Bob Malone
and I will start cleaning up files on the ATF computers, including
VAX, frame grabber and Operator PCs. Please e-mail me or Bob on
any files you may want to save, otherwise they will be gone.
3. Next week’s tasks are: finish up beam lines 1 and 3, and
radiation fault studies for both beam lines 1 and 3.
ATF schedule next week:
1. Tuesday: ATF maintenance, finish remaining work for both beam
line 1 and 3.
2. Wednesday: Compton experiment, Physicist: Pogorelsky, Operator
Cahill.
Radiation fault studies. 1:30 PM, ATF operator training
3. Thursday: VISA beam line commissioning. Physicist Wang, Operator
Montemagno. Radiation fault studies.
4. Friday: Fast Optical Detector experiment, Physicist Semertzidis,
Operator Harrington. Have a nice holiday.
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Technical Operations
(Reported by Bill Cahill) |
The following subjects that were discussed at last weeks meeting.
Job assignments for the ATF shutdown:
Monday 8/30: Bob Harrington will install the pump-out port for the
gun klystron waveguide. (COMPLETED). Don Davis will install the three
remaining vacuum pumps above the VISA "flight deck" location.(COMPLETED).
Marc to reconfigure the magnet assignments for beamline #1 and reassign
GQ1 from 20 amps to 30 amps.(COMPLETED). Bill to remove remaining
shielding from STELLA in preparation for Compton installation on Wednesday.(COMPLETED).
Check with electricians to pull additional cables for VISA. Pedro
will assign type and amount.(Electricians unavailable)
Tuesday 8/31: Bob to remove VISA faraday cup assembly and assist
survey group to realign lens. (IN PROGRESS). If time is available,
begin Compton screen assembly.(NEAR COMPLETION). The Compton cell
should be baking at this point.(INSTALLED ON STI OPTIC TABLE). Marc
will continue to checkout low level parameters with Vitaly.(COMPLETE).
Vacuum group to start bake of VISA line.(IN PROGRESS).
Wednesday 9/1: Marc to assist Compton electronics problem. Bob to
help install screens and install Compton cell at spectrometer location.(IN
PROGRESS).
Vitaly to begin beam studies in tunnel if all low level work is complete.
(STUDIES IN PROGRESS)
Thursday 9/2: Begin lead shielding for Compton Exp. (SHIELDING IS
IN PROGESSS). Check out all electrical systems for ATF. Friday 9/3:
Marcus to install new doubling crystal, Bob to assist.
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Mechanical Engineering
(Reported by John Skaritka) |
1. The Beam Line 1 spectrometer’s magnet rail support structure
was removed and secured into its storage location.
2. The STI gas cell was replaced with the Compton cell.
3. The beam tube extension and Faraday cup was installed and surveyed
into position at the and of beam line 1.The spectrometer dipole
centerline was left at 3mm below the surveyed beamline with the
approval of Vitaly Yakimenko.
4. Various survey tasks were accomplished on beam line 3. This
included the location of survey targets and laser irises needed
for the installation of electron beam diagnostics and the VISA experiment.
Corrections were made to the Faraday cup VISA light outcoupling
mirror.
5. All 4 over head ion pumps required for the VISA experiment have
been installed over the extension to beam line 3.
6. The entire beam line 3 has been made ready for bake out.
7. The waveguide pump out port was installed and the waveguide
system at the gun’s front end is under bake.
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ATF Operations Schedule
(Prepared by Xijie Wang) |
September: September 99
schedule
October: October 99 schedule
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