I_cooler = 20 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 06:08 , run file: run0270.lmd  (0268.lmd and 0269.lmd are garbage files)
file running: 0270.lmd

_______________________________________________________________________________

time: 07:00

I_cooler = -01 mA

      
ESR particles:  2.2E5
        


NTCAp file:
SC_2020-03-30_06-11-08
IQ_2020-03-30_06-11-16
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes

1. slow control:
1.1. program file:
litv-exp@ringpi:~/epics/mrcc_ioc/db $ 
1.2 user interface:
litv-exp@lxg1298:~/E121/scripts/GUIe121_new

2. mbs:
2.1 user interface
litv-exp@lxg1298:~/E121/scripts$ ./e121_gui.py
2.2 source 
R4L-47 litv-exp > pwd                                                                                                                                                                                                                        
/esr/usr/litv-exp/2020_e121/                                                                                                                                                                                             
3. go4:
litv-exp@lxg1298:~/2019Munich-Det/Go4-Muenchen-3V785AH-1V830-simple$ go4
4. experimenal data:
litv-exp@lxg1298:/data.local1/E121

How to change scaling factor?
The parameters is in f_user.c file:
1. open the f_user.C with emacs :
R4L-47 litv-exp > emacs -nw f_user.c
2. change the parameters "MWPC_downscale". 
#define MWPC_downscale 0    // reduction = 2**MWPC_downscale                  
3.compile the program.
4. restart mbs.                                                                                                                                                               

Because the 
leakcurrent of 
6 Sipads is 
over the 
setting limit, 
the alarm of 
HV module is 
sounding.
Ruijiu 
increase the 
limit to 1500 
uA.

The gas bottle was empty. Tino replaced 
the previous old bottle with 50 bar gas left. 

Yuri is getting new gas bottles.

Yuri got a new gas bottle. We repalced 
the the new gas bottle. There is 200 
bar gas left now. 
The old gas bottle with 50 bar gas 
left was kept inside ESR.
The empty gas bottle was removed from 
ESR.  

The outlet volve was decreased by 30 degree.
Since the value is almost 0, we can not read the value of outlet volve.

store 206Pb81+ beam inside ESR and measure its halflife. 
The HV of detector is off.
Start DAQ to record the ESR current in lmd file.
Nik is optimizing the gas jet target. So this file is still test run.

go4 crush up. 
the problem is 
due to  mbs. 
restart mbs. 
see an error. 
restart again. 
the mbs and go4 
are working 
working. 

        MHV1     MHV2
ch1:1st Sipad  4th 
Sipad
ch2:2nd Sipad  6th 
Sipad
ch3:3rd Sipad  DSSD
ch4:4th Sipad  CsI

Sergey and Yuri are tuning Tl beam. The particle number in ers is about 1e4. I(SIS)=5e8
run stop: after few minutes (garbage data)

IQ_2020-03-29_13-05-
56
SC_2020-03-29_13-05-
56

move the detector 1cm 
outside.from 60mm to 
70mm.
left direction is 
outside. right direction 
is 
inside(close to beam).
the spot is moving from 
left to right.

s6 positon at 50mm.

slit	Ratio	error
-1	18.64	0.4
-2	18.18	0.38
-3	20.85	0.5
-4	18.15	0.34
-5	17.44	0.31
-6	17.38	0.32
-7	17.82	0.32
-8	16.41	0.27
-9	18.51	0.37

decay line of 205Tl beam with Ar gas jet target on and S6 slit at -8mm
Ar gas density~1e12 atoms/cm2

Ionization cross section = 1320 barn.
Capture cross section = 557+137+44.5=735.5.
sigma_Ion/sigma_cap=1.79

To start a new run with NTCap, we need to retart NTCAP. 
1. Stop labview program. 
2. Start labview program and start a new run.