[Primexd] [EXTERNAL] PrimEx Meeting Friday, April 24 at 1PM EDT

[Shepherd, Matthew]

Drew and Igal,

I was looking through your slides and also there is the thread of Igal's comments about hit level gains.  I see Drew noticed some G3/G4 differences in number of hits.  Which one is "right" depends on data.

As I noted to Igal, this was studied and tuned in G4.  It is particularly important to get low-energy response correct when writing the algorithm to reject hadron interactions.

See slide 9 of this:

https://halldweb.jlab.org/DocDB/0040/004084/001/MC_NeuralNet_Updates.pdf

Also the checking of energy response in G4 is illustrated on slide 14 of that same talk.  You can see the reconstruction of the photon gun works just fine.  This suggests a discrepancy between Igal's plots and these photon gun results, perhaps somehow related to the use of a pi0?  ...or something has changed.

Matt


On Apr 23, 2020, at 7:25 PM, Drew Smith <andrew.p.smith at duke.edu<mailto:andrew.p.smith at duke.edu>> wrote:

Dear All,


The next PrimEx meeting will be tomorrow, April 24, 2020 at 1 PM (EDT). Here is a link to the meeting page, please add to the agenda if you have any updates:

https://halldweb.jlab.org/wiki-private/index.php/April_24,_2020_PrimEx-Eta_Meeting

Here is a link to the bluejeans meeting page:
https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab.bluejeans.com_7572695553_&d=DwIFAg&c=CJqEzB1piLOyyvZjb8YUQw&r=lU05Rh9aCuulfMNDTEUwlg&m=MW7fsPzIB0BXbhNa1d0azM-ZmYQOOOLASgG92nIcDiY&s=KTIpsilGks5_d390F8zZk_C3UaNfrbGK5-vz5St9vdU&e= <https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab.bluejeans.com_7572695553_&d=DwMFAw&c=CJqEzB1piLOyyvZjb8YUQw&r=lU05Rh9aCuulfMNDTEUwlg&m=2mdSf37sXaUkuO5zaQ0H5-oYP2gQZRhMv7575tlmmOA&s=ZkRSLDXTBkghWzZmC9BynODrAystctRBSVCaBKby434&e=>


Best,
-- Drew

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