Difference between revisions of "Online Plots"
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[[Main_Page|<B>PREX Main</B>]] | [[Main_Page|<B>PREX Main</B>]] | ||
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| + | See Also: '''[[Alarm Documentation]]''' | ||
| + | |||
| + | = Panguin, 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? === | ||
| + | === BPMs as multi-degree of freedom Beam-Position-Correlated noise regression monitors === | ||
| + | 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. 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 these 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. | ||
| + | |||
| + | === List of plots of BPM related measurements === | ||
| + | ==== Calculated position yield ==== | ||
| + | ===== Beam Position on the target ===== | ||
| + | ===== Abstractly: Beam Angle on the Target ===== | ||
| + | ===== More Abstractly: Beam position as a measure of energy fluctuations in incident electrons ===== | ||
| + | ==== The same, but their multiplet/helicity state averaged differences ==== | ||
| + | ==== The same, but w.r.t. other detectors (SAMs, Mains, AT) ==== | ||
| + | |||
| + | == Beam Current Monitors (BCMs) == | ||
| + | === What is an Unser BCM and how does it work? === | ||
| + | === What is an analog/normal BCM and how does it work? === | ||
| + | === What is a digital BCM and how does it work? === | ||
| + | === What is a cavity BCM/BPM and how does it work? === | ||
| + | === List of BCM plots we care about === | ||
| + | ==== The Beam Current, Micro Amps ==== | ||
| + | ==== Beam charge Asymmetry ==== | ||
| + | ==== Beam charge Asymmetry, correlations with SAMs ==== | ||
| + | ==== Beam charge Asymmetry, correlations with already BCM normalized Main Detectors ==== | ||
| + | |||
| + | == Beam Modulation (BMW) Cycle/Response Plots == | ||
| + | === What is BMW and how does it work? === | ||
| + | === List of BMW plots === | ||
| + | ==== BMW Cycle Heartbeat ==== | ||
| + | ==== Beam Monitors vs. BMW Cycle Number/Phase ==== | ||
| + | |||
| + | == DAQ Timing and Synchronization Plots == | ||
| + | === What is the DAQ Timing? === | ||
| + | === What is the DAQ Synchronization System? === | ||
| + | === Kinds of Timing and Synchronization plots we care about === | ||
| + | ==== DAQ Integration Window Verification ==== | ||
| + | ==== Jitter in the end of a Helicity Multiplet ==== | ||
| + | ==== Calculated helicity flip rate ==== | ||
| + | ==== Missed Triggers ==== | ||
| + | ==== Synchronization and timing offset of Counting House w.r.t. HRSs and Injector ==== | ||
| + | |||
| + | == Phase Monitor == | ||
| + | === What is a phase monitor and why is it useful === | ||
| + | === Phase monitor by itself === | ||
| + | === Phase monitor correlations with other quantities as a canary in the coal mine === | ||
[[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 18:17, 11 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
Panguin, 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?
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. 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 these 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.
