Data Acquisition System

DAQ Hardware

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

Media:ElectronicsMap_20130129.pdf

Media:ElectronicsMap_20130129.ppt

• 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:

8. Stop

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

9. 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

Online Monitoring

Scalers: xscaler

"xscaler" is a graphical display of the scalers from the Mott DAQ.

If you login to opsmdaq0 as the "idaq" user, and type "xscaler", it will tell you exactly what to do. And that is:

cd /opt/idaq/xscaler ; ./xscaler

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.

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.

Analysis

Analyze a run

/work/idaq/Analysis/decoder/decode.pl RunNumber

Macros for the Analysis

There are several macros to be used for the analysis. All are in opsmdaq0 in the directory:

 /work/idaq/Analysis/macro/

The macros are:

• Pedestal_Int.cpp => Pedestal_Int.cpp provides a gaussian fit of the pedestals. ONLY for the integral method. It generates the file:

/work/idaq/Analysis/pedestalfiles/Pedestal_Int_Fit_(runnumber).dat

To run it:

   root
   .L Pedestal_int.cpp
   main()
   insert filename when asked with no extensions (.root)

Issues and FAQ

• RunNumber: if the in the msql is different from the one in cool database, coda doesn't work. To solve it open dbedit => localhost => sessions and change the RunNumber