...
But I also noticed quite some evts which apparently have no visible signal at all in the ED, and the only non-zero quantity in the merit is from some ACD tile; it is hard to believe that these will kill a good gamma event. This is a non negligible fraction of the evts, but I cannot make a more quantitative statement right now.
Carmelo warned me that in some cases FRED looses sync between digis and merit when moving back and fwd between evts, so I should recheck this
Live notes from the actual tagup
Bill: working with Tracy on a new sim of CAL xtal adding 2 effects
- add edge effect taking into account solid angle effects and reflection
- getting details of the xtal edge and materials into the sim, with info from NRL people (Eric Grove on chat: n = 1.46 (for one of DC's other elastomers)
qualitatively it explains what we see in the data, I think we are on the right track
Eric G: we tried modeling this long ago, qualitatively you can get it, but actual roughening of this joints, which vsary from xtal to xtal has a huge effect on the actual light taper, so I think you can get close but don't think you can get it right as we don't know what the roughness is; remember there was an engineer from France who claimed to be able to get the light taper curve exactly, but in fact came out with an inverted curve.
Turn-down is a measure of the transverse location of the deposit across the xtal
Bill: agree, but I am more optmistic here
Luca L: Johan is simulating evts with the latest asimetry calibration from Sasha and reconstructing with the calibration from L1proc; it seems CTBCORE is screwed to the extent we see in real data
Bill: would be good to quantify how much these CAL calibs are screwed; make a distribution of ? one can envision making a set of MIPs and run with old and new calibs and measure longitudinal residual positions vs tTKR track, take RMS and difference between old and new calibs for all xtals
Eric G: what strucks me is that the shower RMS did not change when doing this, DOCA moves from 2mm to 4 mm, while CTBCORE has a tremendous effect in shape
Bill: not surprising to me, given the weight of the directionality from the CAL at high energy; this effect on CalTrackDOCA may be a big part in the PSF issue, you can easily comeup with deviations of several mrads
Leon: and just to add to this, the lever-arm for back events is much shorter, so with the same effect and a shorter lever arm you could get the larger effect we actually see in the data
Bill: recent issue on availability of HIP for caibration (see C&A list), Eric can you comment about on-going investigations?
Eric C: distinction between FSW bits, which are fine, then the OBF instance that re-run on the ground; when we turned on the DIAG the OBF basically stopped agreeing with FSW HIP bits as they used to. Currently searching root cause. These evts were put into a special GCRCalib stream and they are available in the digis, Sasha should be able to use it if re-starting from there, so we did not loose them, it's a techincal issue to setup the CAL calib to use digis to access evts. But this needs someone to work on GCRCalib code
17:18:33 Richard Dubois and Tracy will investigate when he gets back from San Diego
Eric G: as I understand that is a non trivial effort, but we need to find out; whereas I presume fixing GCRCalib files is easier, but will take a while
Tracy: focusing on getting stuff on McIntegratingHits, not worked much on the Tree based pat-rec
Bill: anybody looked at the new G4 sims after you ran that?
Tracy: Johann working on runing that to Linux, with Heather; Francesco will become available to work on this next week
Leon: conversation with Sandro about mass model, he is setup to review all the numbers and check what has been included, he sent out a note last night which I have not reviewed yet. I will also work on the 200 micron vertical displacement.
AlexD: have a list of updates on TMine with Eric as requested during the meeting; having it to work on windows is priority for next 2 weeks
Leon on ED: requires input from Heather, and she is now tied to ongoing developments, so on-hold for now; we need to put together a set of more specific requirements
Elliott: I read from the workshop that WIRED will finally replace FRED, is this really going to happen? I personally use WIRED
Leon: we do not really have a choice, FRED is not supported anymore, to be honest FRED is more convenient on windows and I will use it until it works, but it will stop working eventually
17:37:52 Richard Dubois the support for WIRED will improve when we get 3 new FTEs into the data handling group.
17:38:02 Richard Dubois until then, support will not be great
17:38:17 Richard Dubois reqs are going out for those FTEs shortly
Richard: it will be at least 2 months, not weeks, but we ahve budget for this
Sidenote from Luca L: electrical power at INFN Pisa is cutoff for a fire in the nearby electrical cabine; not sure when we are back online, so we will not get emails for some time