Welcome to EDIT2013’s documentation!¶
The Document for DAQ and ROOT macros used in EDIT2013 NEU course
| Author: | Shota TAKAHASHI |
|---|---|
| Created: | 2013/03/12 |
| Modified: | 2013/03/12 |
How to obtain samples¶
Just download “sample.zip” and expand it in any place you want.
What’s inside¶
| daq/ | DAQ programs |
|---|---|
| data/ | data |
| macros/ | ROOT macros |
| plots/ | save plots here if neccessary |
How to take data¶
DAQ programs are in daq/ directory.
Move to this directory first.
Then execute program named adc or multiadc.
You need to specify NEVENT (event number) and OFN (output filename) as arguments.
Output file is created in space-separated-text format.
| Sample command 1: | |
|---|---|
$ cd daq
$ ./adc NEVENT OFN (additional info).
| Sample command 2: | |
|---|---|
| If you run without any argument, it will print usage. | |
$ ./adc
## --> usage will be printed
| ADVANCED: | You can also set additional arguments if you want, like below |
|---|
$ ./adc NEVENT OFN MPPC_ID BIAS_VOLTAGE
Save data¶
It is REALLY important to name data with easy-to-remember-and-handle convention.
(If you named test1.txt , test2.txt , ... and so on,
you will get depressed when you came back to check data next week.)
My favorite way is to separate data by day. (it depends by purpose, though)
I prefer OFN to be named like ../data/YMD/ANYTHING%03d.txt , where
YMD |
date (YYYYMMDD format) |
|---|---|
ANYTHING |
any words you want |
%03d |
run number, this makes easy to use ROOT macros below. |
Overwrite data¶
DAQ program has non-overwriting feature to prevent ACCIDENTAL overwriting. In case of overwriting, remove that file first.
$ ./adc 100 SAME_NAMED_FILE
## --> Error: 'SAME_NAMED_FILE' already exists.
$ rm SAME_NAMED_FILE
$ ./adc 100 SAME_NAMED_FILE
Change ADC channnels¶
Number of ADCs and its channels are defined as variable(array) named ModId and ChId in adc.cc ( multiadc.cc ).
Modify these numbers and re-compile.
| Sample command: |
|---|
$ emacs adc.cc
$ ...(edit adc.cc)
$ make
Install CAMAC driver¶
If you restarted PC for some reason, you need to install CAMAC driver before excecuting DAQ.
We use camdrv for CAMAC driver.
Its source is in /opt/hep/kinoko/drv/camdrv/.
| Sample command: |
|---|
$ cd /opt/hep/kinoko/drv/camdrv
$ su (ask passwd to lecturer)
# make install
# dmesg
# exit
How to make plots¶
ROOT macro demos are in macors directory.
Move to this directory first.
Start ROOT CINT and load MACRO.
Then execute as samples below.
- * IMPORTANT NOTICE *
- These are just simple demos. I encourage you to look into the codes and improve it, or make your own. ( If you know ROOT, you can do it =D )
| Sample command 1: | |
|---|---|
| mppcTest.C to check one histogram | |
The function histText() is defined to return TH1D*.
You need to create TH1D* and draw histogram.
$ root
root[] > .L mppcTest.C
root[] > TH1D *h1 = histText("h1", "../data/20130305/mppctest001.txt")
root[] > h1->Draw()
| Sample command 2: | |
|---|---|
| adcCalibration.C to check three adc data at one time | |
The function “histText” is defined to return TCanvas*. You need to create TCanvas*. (Canvas will be drawn automatically)
$ root
root[] > .L adcCalibration.C
root[] > TCanvas *c1 = histText(32)
| Sample command 3: | |
|---|---|
| tracker.C for eventdisplay | |
You don’t need to load tracker.C, just type
$ root tracker.C
or, in case you want to start from certain run number,
$ 'root tracker.C(3)'
Change branch descriptor¶
All macros use method
TTree::ReadFile(FILENAME, BRANCH_DESCRIPTOR)()
to create TTree from text file.
If you changed orders or number of columns of output text format,
modify BRANCH_DESCRIPTOR as needed.
How to use USB¶
Unfortunately, PCs used in EDIT2013 does not mount USB automatically. So please mount USB manually.
| Sample command: |
|---|
$ dmesg
$ su (ask passwd to lecturer)
# mount /dev/sdc1 /mnt/usb (or /media/usb)
# ls /mnt/usb
# ... (rsync or cp files)
# umount /mnt/usb
# exit