Closed GilesStrong closed 3 years ago
Hi GIles, indeed if you give to the optimization routine the possibility to choose a different resolution for different parts of the detector layers, for sure it will converge to an inferior resolution near the edges than close to the center. But the gain in cost might be illusory, as the production of such detection layers would be more cumbersome and likely more difficult to industrialize. Please correct me if I am missing something.
Cheers, Andrea
Andrea Giammanco http://cp3.irmp.ucl.ac.be/Members/giammanco Phone: +32 10 473221 (UCLouvain), +32 493 581662 (mobile)
From: GilesStrong @.*** Sent: 26 May 2021 10:46 To: GilesStrong/mode_muon_tomography Cc: Subscribed Subject: [GilesStrong/mode_muon_tomography] Mechanism to optimise unused detector elements (#33)
Problem
Currently the optimisation can only adjust detector elements if a muon passes through them (and three other detector layers), however elements on the edges rarely have muons pass through them and through the three other layers, since they are liable to exit the volume. Since these elements are rarely used they should really have their resolution and efficiency decreased to save money, however the optimisation currently has no way to do this. Additionally, when the edge detector-elements are used, their resolution gets increased, even though they are rarely used because the optimisation acts solely on the current batch of muons and has no concept of usage probability.
Possible solutions (please add your own)
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After discussion with @tdorigo we expect this to be at least partially solved by running larger numbers of muons.
Closing this since from diagnostics, 1000 muons generates hits in most detector elements, although the there is a non-uniform density.
Problem
Currently the optimisation can only adjust detector elements if a muon passes through them (and three other detector layers), however elements on the edges rarely have muons pass through them and through the three other layers, since they are liable to exit the volume. Since these elements are rarely used they should really have their resolution and efficiency decreased to save money, however the optimisation currently has no way to do this. Additionally, when the edge detector-elements are used, their resolution gets increased, even though they are rarely used because the optimisation acts solely on the current batch of muons and has no concept of usage probability.
Possible solutions (please add your own)