Data Analysis with LEA - Up to July 2013
(old version up to April 2010, latest version)
The data stream or the list-mode data files written by MBS can easily be analysed using the GSI program LEA. LEA can directly read the GOOSY file format used by MBS.
The LEA project for the whole can be found at the server zirkonia in the following directorie:
zirkonia:/home/ntofdaq/lea/nng_online
This directorie contains the file f_anal_nng.c, which is used to define the data analysis procedures depending on the users wishes. Every change in this file, written in the programming language C, has to be accepted to the total LEA project by running the "make" command.
Note: Before one can use LEA, one has to run the script /home/ntofdaq/.profile!
One can include every standard C command to the f_anal file to manipulate the data. To accumulate histograms, one has to use the commands HISACC1I(1DHIST,X,VALUE) and HISACC2I(2DHIST,X,Y,VALUE). These commands will increase the content of channel X of a one dimensional histogram 1DHIST or channel (X,Y) of a two dimensional histogram 2DHIST, respectively, by VALUE. The default value of VALUE is 1. Only in special cases, e.g., if you want to do stability investigations or for the count rate in dependence of the measurement time, one should use other values.
The names and dimensions of the histograms are defined in the files hiscre_nng.scom, hisdef_nng.h and hisini_nng.h. To modify these settings one has to run the following command:
lea -mod nng
This will open a window, where all defined histograms are listed. The use of this program is self-explaining. Note that every entry has to be confirmed by pressing the ENTER-key and changed histogram has to be confirmed be clicking the "Apply" button. To save and leave the modifying program one has to click the buttons "Apply", "definition file", "Save", and "Quit" in this order.
To run the analysis one has to do the following steps (Note: every entry in LEA has to be confirmed by pressing the ENTER-key):
| 0. |
login to zirkonia and prepare for using LEA |
ssh -X ntofdaq@zirkonia
password: ***********
source .profile |
| 1. |
goto working directory |
cd lea/nng_online |
| 2. |
start LEA graphical interface |
lea -pro nng -men |
| 3. |
choose data source |
if lmd file:
if MBS stream: |
Source = LMD File; Input file/node = /path/filename.lmd
Source = MBS samples; Input file/node = rio7 |
| 4. |
start analysis |
click "Analyze events" |
The following histograms are produced by LEA:
| Name |
xmin |
xmax |
xbinsize |
ymin |
ymax |
ybinsize |
Meaning (x) |
Meaning (y) |
Meaning (z) |
| ADC |
0 |
4096 |
1 |
|
|
|
FC ADC raw value |
counts |
|
| BAFDIFFTDC |
0 |
2000 |
1 |
0 |
18 |
1 |
Time Difference Left-Right |
|
counts |
| BAFDIFFTDC2 |
0 |
2000 |
1 |
0 |
18 |
1 |
Time Difference Left-Right |
|
counts with acc signal |
| BAFLG |
0 |
4096 |
1 |
0 |
36 |
1 |
LG raw value |
| 0...31 |
: |
BaF2 DAQch1...32 |
|
counts |
| BAFLGS |
0 |
4096 |
1 |
0 |
36 |
1 |
LGS raw value |
| 0...31 |
: |
BaF2 DAQch1...32 |
|
counts |
| BAFSG |
0 |
4096 |
1 |
0 |
36 |
1 |
SG raw value |
| 0...31 |
: |
BaF2 DAQch1...32 |
|
counts |
| BAFSGS |
0 |
4096 |
1 |
0 |
36 |
1 |
SGS raw value |
| 0...31 |
: |
BaF2 DAQch1...32 |
|
counts |
| BAFLGSUM |
0 |
4096 |
1 |
0 |
18 |
1 |
Geometric mean of LGs of BaF2 1...16 |
|
counts |
| BAFLGSSUM |
0 |
4096 |
1 |
0 |
18 |
1 |
Geometric mean of LGSs of BaF2 1...16 |
|
counts |
| BAFSGSUM |
0 |
4096 |
1 |
0 |
18 |
1 |
Geometric mean of SGs of BaF2 1...16 |
|
counts |
| BAFSUMTDCS |
-8192 |
8192 |
1 |
0 |
18 |
1 |
Sum Left+Right |
|
counts |
| BAFSUMTDCS2 |
-8192 |
8192 |
1 |
0 |
18 |
1 |
same as SUMTDCS with a gate on DIFFTDC |
|
counts |
| HITBAF |
0 |
32 |
1 |
0 |
36 |
1 |
No. of hits per Channel |
| 0...15 |
: |
BaF2 DAQ ch00...31 |
|
counts |
| HITFC |
0 |
32 |
1 |
|
|
|
No. of hits per Channel |
counts |
counts |
| HITPL |
0 |
32 |
1 |
0 |
16 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...12 |
: |
plastic DAQch1...10 |
| 13 |
: |
trigger |
| 14 |
: |
fission chamber |
|
counts |
| OPC |
0 |
8192 |
1 |
0 |
32 |
1 |
OPC data |
OPC values (see Data structure) |
|
| PLDIFFTDC |
0 |
4096 |
1 |
|
|
|
ADC raw value |
counts |
|
| PLDIFFTDC2 |
0 |
4096 |
1 |
|
|
|
ADC raw value |
counts |
|
| PLLG |
0 |
4096 |
1 |
0 |
36 |
1 |
LG raw value |
| 0...35 |
: |
BaF2 DAQch1...36 |
|
counts |
| PLLGS |
0 |
4096 |
1 |
0 |
36 |
1 |
LGS raw value |
| 0...35 |
: |
BaF2 DAQch1...36 |
|
counts |
| PLSG |
0 |
4096 |
1 |
0 |
36 |
1 |
SG raw value |
| 0...35 |
: |
BaF2 DAQch1...36 |
|
counts |
| PLSGS |
0 |
4096 |
1 |
0 |
36 |
1 |
SGS raw value |
| 0...35 |
: |
BaF2 DAQch1...36 |
|
counts |
| PLSGSUM |
0 |
4096 |
1 |
0 |
36 |
1 |
SG raw value |
| 0...35 |
: |
BaF2 DAQch1...36 |
|
counts |
| PLSUMTDCS |
0 |
6554 |
1 |
0 |
6 |
1 |
same as SUMTDC but divided by 10 |
| 0...5 |
: |
plastic detector 1...5 |
|
counts |
| PLSUMTDCS2 |
0 |
6554 |
1 |
0 |
6 |
1 |
same as SUMTDCS with a gate on DIFFTDC |
| 0...5 |
: |
plastic detector 1...5 |
|
counts |
| RATE1...3 |
0 |
8192 |
1 |
0 |
32 |
1 |
number of scaler readouts |
input channel of scaler 2...4 |
count rate = counts divided by time flag |
| TDCBAF |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCBAFACC |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCBAFDIFF |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCBAFH0 |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCFCACC |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCFCDIFF |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCFCH0 |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCPL |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCPLACC |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCPLDIFF |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TDCPLH0 |
0 |
81920 |
10 |
0 |
36 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...32 |
: |
BaF2 DAQch1...32 |
| 33 |
: |
trigger |
|
counts |
| TRGTIME |
0 |
81920 |
10 |
0 |
16 |
1 |
TDC raw value |
| 0 |
: |
accelerator |
| 1...12 |
: |
plastic DAQch1...10 |
| 13 |
: |
trigger |
| 14 |
: |
fission chamber |
|
counts |
| TWODLGSG01...32 |
0 |
4096 |
12 |
0 |
4096 |
12 |
LG raw value of BaF2 DAQch1...42 |
SG raw value of BaF2 DAQch1...42 |
counts |
| TWODLGSGSUM01...16 |
0 |
4096 |
12 |
0 |
4096 |
12 |
LG raw value of BaF2 DAQch1...42 |
SG raw value of BaF2 DAQch1...42 |
counts |
| VETO |
0 |
32768 |
5 |
0 |
15 |
1 |
time difference to accelerator |
| 0...9 |
: |
plastic DAQch1...10 |
|
counts |
| VETOLONG |
0 |
32768 |
5 |
0 |
15 |
1 |
time difference to accelerator |
| 0...9 |
: |
plastic DAQch1...10 |
|
counts |
| VETOSHORT |
0 |
32768 |
5 |
0 |
15 |
1 |
time difference to accelerator |
| 0...9 |
: |
plastic DAQch1...10 |
|
counts |
