Welcome to http://people.na.infn.it/~palladin/MICEPID,

a rudimentary web site to organize the work of the MICE PID team towards CM12 in Frascati Jun 26-29, 2005

Last modification Mar 20 2005, VP
Next PID phone-meeting is scheduled for Wed Mar 30 at our usual time (16:30 GMT). Apr 13, May 11, 
May 25, Jun 15 are the other Wednesdays w/o a MICE VideoConference and our other natural dates for
 phone-meetings. Comments welcome.
 
Our meeting on Mar 1 featured two presentations 
 
1) M. Ellis Losses in the cooling channel
aiming at understanding whether the level of losses (1%) of good muons in the downstream 
section of MICE implied by the present design of the PID detectors and their magnetic shield 
deteriorates overall MICE performance. 




This deserves scrutiny from a larger group than people present today.
Please look at his slides and send your comments to the PID e-list.
Matched beams with emittance from 0.5 to 9.5 pi were inserted 
upstream of 1st tracker and transported to the 2nd tracker. 
For each emittance value, the radial distributions in tracker 1 and 2 are 
produced, showing that the beam opens up in the way. 
A final plot summarizes the information giving the fraction of muons 
that are not transmitted throu a 40 cm diameter as a function of the input 
emittance. 
Malcom will redo it for 30 cm, as needed. With the present 40 cm value
it seems that transmission losses are negligible for small emittance but reach 
for the 6 pi emittance case where T. Roberts found similar losses from 
the PID and reach 10% for 9.5 pi. In Malcolm's opinion, this implies that 
a subset of muons can be selected to measure emittance reduction for values
of the input emittance up to 8.5 pi or so.





Action
Malcolm will redo the final plot for 30 cm diameter and send it to the e-list
After that, Vittorio will organize further discussion on the implication of  his 
results, in particular on the size of the PID detectors.
 
2)  W. Lau   Design & Safety reviews of PID 
Wing exposed to the PID experts, largely absent in LBL, the steps 
necessary for design & safety review. We will make then first plans 
to launch them. 





He presented to TOF, CKOV I and CKOV II experts  a specific example (beamline)
of the two excel tables he wants filled. 
 
Action 
Wing will circulate also the example of the SciFi. 
Ludovico will contact Wing and put himself up to date in spite of his absence. 
TOF, CKOV I and CKOV II will give at try at filling the tables before next meeting 
This may imply updating the TRD, at least for some detectors. 
 
In addition, Maurizio reported of plans of Uni Geneva to buy PMT's for TOF
prototypes and Wing stimulated more input to his gallery of pictures from CKOV I,
that promised it, along with a revised version of the TRD section.
Maurizio asked from Steve and Tom projected profiles at TOF 0, I, II 
so to be able to optimize their segmentation. 
 
Ghislain needs to get Youri’s design of a segmented magnetic shield. 
He is also waiting for Pasquale’s input in the design of the anchorage 
of each mag shield to its solenoid. 
 
Finally we tried to plan ahead
 
Contributions that we could schedule already on Mar 30 are 
 
T. Roberts - Closer inspection of the 8 muons hitting the mag shield Is anything funny about them?
M. Bonesini - Plans for TOF prototypes TOF0 is the most urgent detector, it is needed in 
 April 2007, in our revised schedule. Alain has some 
 money to devote to this and will soon contactMaurizio 
 to plan action together and report also to the VC of
 Apr 6. 
S. Kahn - The simulation model for the response of CKOV II. Steve is (will be) having discussions with Ghislain 
  and will be refining his algorithms accordingly.
R. Sandstrom – Progress on simulation of the Mucal response. His tooling up is very promising, good results are in 
  view. First are already expectrd on the Mar 9 VC and 
 we may have an update on Mar 30. 
Mississipi - Performance of CKOV I at higher muon momenta… Higher than 186 MeV/c, up to 280 or so. Do 
 we need and can adjust the refraction index? 
Mississipi - Update on CKOV I design Discussions with Ghislain are in progress on mirrors & 
 light collection. Supports have to be designed too. 
 What else? 
S. Kahn - TOFI-TOF0: G4BEAM results on pi/mu compared to G4BEAM He is close to reproduce Tom’s results. He or Aron Fish 
 may report  
 
 
Contributions likely to come on a longer time scale are 
  
G. Gregoire - Progress on CKOV II Design of light collection. New choice of radiator? 
G. Gregoire - Discussion with Youri on the segmentation and supports 
 of the magnetic shield 
S. Kahn - CKOV I: pi/mu/e separation from G4MICE
S. Kahn - CKOV II: mu/e separation from G4MICE 
 
L. Tortora - Update on Mucal design When Rikard’s work will have made that possible
 
T. Roberts - Updated rates, profiles and losses When the new iteration of beam design will be ready 
 
M. Bonesini - Final choice of the TOF PMT’s and of their orientation According to the results of the planned measurement 
  campaign 
 
Certainly others will be proposed that I fail to foresee.
 
Useful links
 
PID Summary Talk at CM11 in LBL  The basic conclusion is that a serious re-evaluation of PID performances with G4MICE 
is becoming possible and we should have all or some at CM12. 
 
PID Chapter of the TRD It is now a credible repository, thou still to be improved. 
 
The link to Wing Lau’s Gallery is http://www.physics.ox.ac.uk/design/MICE/mice_page.htm
 
PID Summary Talk at CM10 in UK  The basic conclusion was that we are advancing well enough on hardware design. 

But not fast enough towards a serious re-evaluation of PID performances with G4MICE.