Run Plan for 24 july 2002

Check over the shift guidelines to make sure you know what your shift duties are. Remember to check on the gas system particularly at night. Shift checklists are here. In addition to the regular shift duties, you should be checking the He flow rates approximately every half hour for the cooling of the magnet. It is important that we document beam settings including slit and jaw settings each time they are changed for a set of runs. Robert Openshaw has finished changing the PC gas over to CF4/Iso, and has given us the go ahead to turn on HV. Tonight we could begin the remaining studies with straight tracks:

Study stopping of muons in the target at momenta between 29.4 MeV/c and the surface muon edge. To tune the beam to get the surface muon edge, we figured we could scale the 29.4 MeV/c tune up to 29.6 MeV/c. To figure out the fraction of surface to cloud muons, look at the CP TOF histograms. For more details about the type of muons look at Rob's Thesis. Analyze these runs with QOD and get ratios of muons in PC5,6,7,8 (integrate muons in elost histograms) to muons in M counter. Histograms 52302-52305 can be used for PCs and histogram 71 can be used for the scintillator. You can compare to the previous gas with the 29.4 tune by looking at the elog http://midtwist.triumf.ca:8081/EL/020722.2303?exp=twist. Another analysis is to run Rob's code to find the lastz of the muon. His code is in the directory /home/twistonl/e614soft/triumf/mofia/rpm/source/user/mofia, and you can use the kcm file /home/twistonl/e614soft/triumf/mofia/rpm/source/kcm/rpm_decay_straight_drift.kcm.
Cross Talk Analysis for CF4/Iso in PC's. No plan here yet. Probably this will be done by Maher and Marc on Thursday afternoon.

Blair Jamieson

Last modified: Wed Jul 24 16:47:48 PDT 2002