Difference between revisions of "Long term items"

Latest revision as of 18:39, 24 May 2024

Covariance matrices for photons; need pull distributions (Regina could help); add these to best practices page [Mark]
BCAL hot channels. Investigate and see if baseline or other improvements are possible; Regina students could help.

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-# FCAL: Fernando and co. converged on a plan for baserepairs: will take 25 weeks to complete the FCAL repair cycle (342 units) during SAD. (See Fernando's email from Sep 18, 2020.]
+# Covariance matrices for photons; need pull distributions (Regina could help); add these to best practices page [Mark]
-# FCAL: It has been noticed that the pi0 mass shifts when the LED pulser runs at high rate. This is still not understood. See [https://logbooks.jlab.org/entry/3595928 Log Entry 3595928] and references.  Several runs have been taken in raw mode.  These runs exhibit the shift in pi0 mass with LED running at 1 kHz.  There is a need to analyze these to try to determine the cause.  Susan will undertake this task.
+# BCAL hot channels.  Investigate and see if baseline or other improvements are possible; Regina students could help.
-##50634 - FCAL Green LED: 1kHz, 29 V, Livetime is 9%, 1.7 M events
-##50635 - FCAL Violet LED: 1kHz, 22 V, Livetime is 9%, 1.4 M events
-##50636 - FCAL Blue LED: 1kHz, 15 V, Livetime is 9%, 1.5 M events
-# Richard Jones' [https://github.com/JeffersonLab/HDGeant4/issues/111#issuecomment-657062174 work on G3vG4]: run photon, pi+, pi-, proton particle guns. Regina will undertake this task.