Accessing Plots
NEXT arrow displays the next default time period (#spins, 24 hrs)  for the currently displayed plot type.
PREVIOUS arrow displays the previous default time period for the currently displayed plot type.
LATEST PLOT button displays the most recent plot for the  currently displayed plot type.
UPDATE DATE/TYPE button updates the plot with user selected changes to plot type, date, or time.
 

Plot Type and Description
Spec Earth 24 hr -24 hour spectrograms of Start Single, Stop Single, and Coincidence counts.  Y-axis is Spin Angle, X-axis is Time (each consecutive spin), Zero spin angle corresponds to the Earth. White lines on the plot indicate the size of the Earth.  Instrument parameters at the bottom of the plot are start time values - an * means that the value has changed during the plot time period.  Coincidence counts are taken from the Binned Data Packet and are summed over all masses, polar zones, and energy ranges.

Event Rates 24 hr - A 3-panel plot of Start Singles, Stop Singles, and Coincidences.  Y-axis is Count Rate (log), X-axis is Time.  Singles counts from all 45 spin sectors are plotted on the Y-axis for each spin period. Coincidence counts are accumulated by spin sector from the Binned Data Packet, summing over all masses, polar zones, and energies.

Images - 3 panels containing images of counts for Mass 1, Mass 2, and the Sum of both masses.  Y-axis is Spin Angle, X-axis is Polar Angle.  Magnetic field lines are from Mei-ching Fok's model.  Image accumulation time varies.  The number of spins summed is at the top left corner of the plot.

HK Critical - 24 hour plots of Current Monitor values for the positive and negative collimator power supplies, and Temperatures for the C&DH (Temp0) and the Low Voltage Power Supplies (Temp1).  One point (value) per spin is plotted. For current monitor values the Y-axis is Telemetry units, temperature values are in Celsius, and the X-axis is Time.  Also included are plots of Start and Stop Singles similar to those in the Event Rates plot.

HK HVmons - 24 hour plots of high voltage power supply Voltage Monitor values.  One point (value) per spin is plotted. Supplies included in the plot are MCP Start, MCP Stop, Collimator (Positive and Negative), Optics, and Steering. Y-axis is Telemetry units and the X-axis is Time.

HK LVmons, Imons - 24 hour plots of low voltage power supply Voltage Monitors and high voltage power supply Current Monitors.  One point (value) per spin is plotted. Low voltage supplies included are the +/-15V and the +5V.  Current information is given for the MCP Start/Stop and Optics supplies. Y-axis is Telemetry units and the X-axis is Time.
 
 

For additional information:
Please contact us if these help files do not answer your questions fully, or if you need assistance or support from the LENA team to reach your goals. If your goal is a presentation or publication, please provide an informal abstract of the intended work with your inquiry. Note: this will help us maintain the server facility, even if you do not need support from the LENA team for a specific study.

Science support contacts:
Operations and hardware status:  Dr. Michael Collier
Database and software status:      Evelyn Lee Ho