Difference between revisions of "Online Plots"
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The way that we can disentangle the beam position, angle, current and energy fluctuations due to helicity correlated beam (i.e. generated in the polarized source non-uniformly between helicity states and then damped or amplified farther along the beamline) are myriad. | The way that we can disentangle the beam position, angle, current and energy fluctuations due to helicity correlated beam (i.e. generated in the polarized source non-uniformly between helicity states and then damped or amplified farther along the beamline) are myriad. | ||
| − | = | + | = Live and Online Analysis Result Plots = |
== Critical Systems == | == Critical Systems == | ||
=== List of Critical Systems and Descriptions === | === List of Critical Systems and Descriptions === | ||
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=== Phase monitor correlations with other quantities as a canary in the coal mine === | === Phase monitor correlations with other quantities as a canary in the coal mine === | ||
| + | = EPICs Archive Plots = | ||
| + | |||
| + | = Counting Mode DAQ Plots = | ||
[[Category:HOW TO]][[Category:SL]][[Category:TO]][[Category:WAC]][[Category:DAQ]] | [[Category:HOW TO]][[Category:SL]][[Category:TO]][[Category:WAC]][[Category:DAQ]] | ||
Revision as of 23:26, 12 July 2019
In the process of editing and updating this page. Please contact Juliette Mammei crowder@jlab.org with questions or suggestions.
PREX Main
See Also: Alarm Documentation
We assume that our main detectors are simultaneously measuring the helicity correlated motion and fluctuations of the electron beam from CEBAF, as well as physically interesting Parity Violating Asymmetry (Apv) of highly longitudinally-polarized electrons on an isotopically pure Lead 208 (Calcium 48) target of appreciable, but intentionally small scattering length.
The way that we can disentangle the beam position, angle, current and energy fluctuations due to helicity correlated beam (i.e. generated in the polarized source non-uniformly between helicity states and then damped or amplified farther along the beamline) are myriad.
Live and Online Analysis Result Plots
Critical Systems
List of Critical Systems and Descriptions
Beam Current Monitor
Hall A Arc, Energy Degree of Freedom-Sensitive BPM 12
Missed Triggers in the DAQ
Main Detectors
What are our main detectors, and what happened to the rest of the HRS?
List of kinds of plots we care to make from main detectors
Raw Signal Voltage into the DAQ
Yield (signal in Volts/Microamps of Beam Current)
Asymmetry
Small Angle Monitors (SAMs)
What are SAMs?
Lists of kinds of plots
Detectors Yields (not-normalized to beam current)
SAM Asymmetries
SAM beam profile/halo sensitivities around the circle/combining 8 Degrees of Freedom
Regressed SAMs as a noise floor limit indication (Advanced Plots)
Beam Position Monitors (BPMs)
What is a BPM and how does it work?
Continuation of Measuring, Controlling and Removing Helicity Correlated Noise in our Main Detector Measurements
Using beam position monitors, to keep track of the momentum/energy fluctuations in the magnetically energy selecting Hall A arc, as well as the 4 degrees of X and Y position and angle onto the target information, allows us to measure helicity correlated beam fluctuations to fairly high precision and then calculate correlation slopes over various time scales and modes of beam motion (normal beam motion and intentionally large modulation induced beam motion) which are then subtracted, per event, from our main detectors to arrive at the remaining physics asymmetry.
