Minutes/Action items of "Instrumentation-Systems-SDA" monthly meeting
May 6, 2009
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D. Capista, M. Convery, T. Meyer,D. Morris, V. Papadimitriou, J. Patrick,
D. Slimmer, R. Thurman-Keup, M. Wendt, J. Zagel



We discussed the following:
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1) TeV IPM status and plans for the Booster IPM 
Jim Zagel

2) Flying Wire status
Jim Zagel

3) Main Injector IPM status
Denton Morris



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Conclusions-Action Items:


1) 
Jim summarized recent improvements and fixes for the Vertical Tevatron IPM.
The sigma variation as a function of signal intensity was fixed by setting
the control register bit that enambles the QIE number conversion in the 
buffer board. The cause of fluctuating signal levels was also understood 
(It was related to the HV/Clearing Field charge time).
We now get good data o nthe size of the pbar beam during the PBJ (intentional
blow-up) measurment at flattop.
Now that the system is more stable some studies that characterize the detector
will be repeated. 
More work is needed for the Horizontal Tev IPM. The signal is lower than in 
the vertical system and it has more hardware errors.  Some hardware may need 
to be changed.

The IPM design for a second Mark-II (gated) has begun.
A document with specifications will be ready for discussion by the end of 
January 2010. 

The IPM design for a Booster IPM has begun as well.
Probably we will not use here the MI style electrostatic cans; Ming-Jen
has found that for 8 GeV beam some oscillations are not seen well
electrostatically at Q102 and more study is needed. We are looking into using
magnetic containment for the collection of electrons as in the MI MArk-II. 
A document will specifications will be ready for discussion by the end of 
January 2010. 




2) 
The vertical Main Injector Flying wire has been replaced on December 2.
A new lid with brand new feed through was installed. The wire is still
operational as of December 10, 2009. The Recycler vertical Flying Wire is
still broken. Fixing it would require an access of 2 weeks.



3) 
For Antiproton transfers through Main Injector the IPM systems have been
working very reliably.  We now have ten weeks of data and can easily see
subtle trends in tune shift over time that can be dealt with prior to it
having an impact on beam efficiency.

Proton transfer data is still waiting for progress to be made on the
turn on time of the high voltage for the multi-channel plate.  We are
able to configure the IPMs to take data when triggered manually and have
done so with good success.  Last week the quads were adjusted in the MI-8
line to better match the MI lattice.  Using the IPMs it was possible to
verify instantly that the corrections were of the right direction and
magnitude.

Next, there will be a study planned to use the IPMs to measure the reverse 
protons injected at 150GeV from the Tevatron to better understand the A150 line.

We are also in the process of calculating MI IPM emittances (using the existing 
lattice information) in order to introduce them in the Tevatron and Pbar
Supertables.



Starting in February of 2010 we plan to move our meetings from the 1st Wednesday 
of the month, afternoon, to the 2nd Tuesday of the month, morning, 10:30 am.  
From February on we will be meeting at the Penthouse (instead of the Huddle).