View source for HRRLrun 3-22-26-2010

HRRL run on March 22-26 2010

Preliminary setup

=3/17/10=

Install detector infrastructure to mount 2 Drift chambers, 2 Scintillators and 1 GEM on a translator table.

Install collimation

=3/18/10=

Install all detectors and associated electronics (power supplies, cabling, gas lines,...)

==Timing concept==

There are 3 modules to be readout; an ADC, a TDC, and the V1495.

The ADC requires a gate defining the integration interval of the pulse.  The TDC requires a start pulse to begin the TDC clock and a stop pulse to stop the TDC clock.  The V1495 requires a trigger pulse to tell it there is data coming from the VFATs.

The ADC and TDC will be run so they get pulses every time there is a RF pulse.  The data are only recorded though if there is a coincidence pulse telling them to keep the data.  Otherewise the ADC and TDC will throw the data away.


===ADC timing pulse===

The linear output of the 3 Fold coincidence module is generated whenever there is an RF pulse from the accelerator and is sent to the 2-channel dual timer.  The top channel of the dual timer receives the 3-FOld coincidence linear output and its delayed output is send to the bottom channel of the Dual timer.  The bottom of the Dual timer will be used to set the gate width.  So use the top channel to adjust the gate such that it is in time with the FC output pulse.  Then adjust the bottom channel so the with of the gate integrate over the desired part of the FC output.

=== TDC timing===

=3/19/10=

install DAQ system and associated readout electronics.

Check channels in histograms


Coincidence: Coincidence between Accelerator's RF pulse generator, and several PMTs

TDC start: Accelerator RF pulse generator.
TDC stop:  2 DC, 1 GEM trigout, 4 PMTs

ADC: all FC channels from Accelerator ribbon cable.
ADC gate:  Create timing gate using scope when accelerator

V1495:  Trigger pulse from coincidence logic above

=3/22/10=

Final day for completing system checks

=3/23/10=

1pm - 5pm: Tune beam for low and high current


HRRL_3-22-10_DAC_timing_trigger.png

HRRL_3-22-10_DAC_timing_triggerVeto.png

=3/24/10=

==Positron spectrometer run plan==

== Detector tracking run plan==