Online Plots

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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?

BPMs as multi-degree of freedom Beam-Position-Correlated noise regression monitors

Continuation of 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.

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