Difference between revisions of "Data Acquisition System"

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* [[Online Monitoring]]
 
* [[Online Monitoring]]
= Online Monitoring =
 
 
== Scalers: '''xscaler''' ==
 
 
"xscaler" is a graphical display of the scalers from the Mott DAQ. 
 
 
Login to opsmdaq0 as the "idaq" user (ssh idaq@opsmdaq0). To run xscaler you must be in the correct directory.
 
Go to /opt/idaq/xscaler and type ./xscaler there and do not forget the dot (.) and slash (/)
 
 
 
== Dead Time: '''datamon''' ==
 
 
There is a display to monitor the DAQ dead time. To run it use the idaq user on opsmdaq0. Type: '''datamon'''
 
 
 
== Scaler Data written to EPICS ==
 
 
The scaler data which appears in xscaler (see above for xscaler) is also written to EPICS.
 
The data are rates in Hz.
 
 
The EPICS channels are of the form "Inj_ScalerN_ChM" where N = 1,2,3 and M = 1,2,3,4,...32.
 
See xscaler for channels assignments. Also listed here:
 
* [[Mott EPICS Scalers Channels Assignments]]
 
 
To retrieve data from EPICS you can, for example, do this:
 
 
'''caget Inj_Scaler1_Ch24'''
 
 
Inj_Scaler1_Ch24              484195
 
 
The number here means 484195 Hz.
 
 
== Online Histogram Display ==
 
 
Log on opsmdaq0 using idaq user and from the idaq home directory and type: '''peppoOnline'''.
 
 
Two windows open, the smaller one have buttons to control the plot to see, the biggest one shows the plot to monitor.
 
  
 
* [[Mott Analysis]]
 
* [[Mott Analysis]]

Revision as of 13:28, 28 October 2013

DAQ Hardware

  • Electronic Map of Mott Crates (January 29, 2013):

Media:ElectronicsMap_20130129.pdf

Media:ElectronicsMap_20130129.pptx

  • Cabling of FADC, Scalers, and TDC (January 29, 2013):

Media:Cable_20130129.pdf

Media:Cable_20130129.pptx

  • DAQ Timing (January 29, 2013):

Media:DAQ_Timing_20130129.pdf

Media:DAQ_Timing_20130129.pptx

How to run CODA

CODA crl files are in: idaq@opsmdaq0: /opt/idaq/crl

CODA scripts files are in: idaq@opsmdaq0: /opt/idaq/scripts

* From an accelerator machine: ssh -X idaq@opsmdaq0 

Note: idaq is the injector DAQ account and uses ssh authorized_keys for login - no need to enter password and open few xterm & windows.

 xterm 1: telnet iocmdaq1
 xterm 2: msqld (the CODA msqld database is usually running unless opsmdaq0 was rebooted)
 xterm 3: platform
 xterm 4: codamaster

Choose the configuration: Mott_Sample

When the CODA MASTER panel appears, select Config => Enable Buttons.

Select ET System, Event Builder, Event Recorder and Run Control. After doing that if you will click on Get Status you will find status of ER1, EB1 and ROC1. All buttons must be green.

Select Run Control and the main CODA panel will appear.


Start and Stop a Run

From Run Control panel, select in the following order:

  1. Sessions => inj
  2. Configurations => Cool => Mott_Sample
  3. Platform => Connect
  4. Configure
  5. Download
  6. Prestart
  7. Start

At the end:

  1. Stop

and if you want to apply a change or you need a new configuration:

  1. Reset

and start from number 5.


Mott DAQ iocmdaq1

  • There are two ways to access the Mott DAQ ioc:
  1. From an accelerator machine: telnet iocmdaq1
  2. From an accelerator machine: ioc_concole iocmdaq1. Here you need to enter a password to this cannot be done with the idaq account.
The startup file is: idaq@opsmdaq0:/cs/op/iocs/iocmdaq1/startup
The CODA boot file: idaq@opsmdaq0:/opt/coda/boot/mott_roc1.boot