-- E calibration seems to have changed! ---

This calibration is based on the source data taken before the experiment:

Xray1: E [keV] = ch*0.01582-1.963
Xray2: E [keV] = ch*0.01799-1.803
Xray3: E [keV] = ch*0.01941-2.618

30angle:  E[keV] = 0.0158507 *ch-2.07456
90angle:  E[keV] = 0.01950*ch-2.76
145angle: E[keV] = 0.017988  *ch-1.809

I could identify 2 peaks in the 241Am spectra and 4 peaks in the 133Ba. These peaks are fitted with a gaussian to get their position --> linear energy calibration for the combined (Am+Ba) data sets for each detector. The function I used: E(ch) [keV] = m*ch+b

Stayed below E-10
Start:2.42E-11
Top after moving: 4.144E-11

Vacuum before DSSSD movement: 1.5844E-11
Top value after movement: 3.64378E-11

This oscillating effect is due to magnets?

There is some problem with the vacuum in SIS and thus data recording is stopped.

The vacuum remained in the E-10 range after moving the dsssd. The oscillation in the vacuum.values are due to the 
magnets ramping up and down

The unpacker used for the production runs of E127b is located at 
/u/litv-exp/unpacker/unpackexps/e127_TO_2021_with_ECL

It is also aliased for litv-exp user as: E127_unpack

This is for the data structure as documented here:
https://elog.gsi.de/esr/E127/346

As of now, this is compiled for ROOT v6-18-04 located here:
/cvmfs/csee.gsi.de/root/618-04/bin/root

The UI-curve of the detector
U I
10 0.11
20 0.13
30 0.15
40 0.17
50 0.19
60 0.21
70 0.22
80 0.23
90 0.25
100 0.27
110 0.29
120 0.31
130 0.33
140 0.35
150 0.37

Trafo was set to 0

As shown in the figure, the detector is tilted by a certain angle which is about 45 degree. 
The tilted angle is defined as angle B.
We measured angle A using the vertical laser line (red) and papers with a straight line edge. So we can marked
the line denoted by the laser line when the paper is put on the holder.
In the beginning, the angle A is measured as 43.3±0.5 degree. So angle B= 46.7±0.5 degree
After the adjustment of the detector (to make it in the center of the chamber), the angle A is measured as
43.1±0.5 degree with another paper.  So angle B= 46.9±0.5 degree. 

This is the documentation of the source tests with the 2nd micron DSSSD of 2nd generation (label 3288-17, thickness 529um)

The detector is put into vacuum (~5e-6 mbar) in our test chamber. The source is positioned a few cm above (see fotos).
The Bayard-Alpert Sensor in the chamber has to be deactivated, otherwise the light emission will increase the noise on the DSSSD strongly and reduce its performance.

Additionally the current and voltage from the CAEN HV is monitored with the vulom scalers: ch.13(Icool) = current; ch.14(Ucool) = voltage. 


Source: mixes alpha [239Pu, 241Am, 244Cm]

File directory: lxg1275:/data.local3/test_data_2020/
QuickTest files: si2_test_mixed_source[X].root
lmd files:  Si2_run[XXX].lmd

DAQ Settings:
MADC gate   : 0 delay, 5000ns width
MSCF shaping: 2 us 
trlo config : e127.trlo (trigger=1/tpat=1 for Si, trigger=11 for vulom_scaler)


LMD runs:
-----------------------------
Si2_run001.lmd
Start: Fri 23.10.2020 16:19
Stop:  Mon 26.10.2020  8:36

File-Size: 20GB
Events:   ~53M
comment: 
source roughly centered
CAEN HV scalers not connected

-----------------------------
Si2_run002.lmd
Start: Tue 27.10.2020 16:01
Stop:  Wed 28.10.2020 13:26

File-Size: 12GB
Events:   ~32M
comment: 
source in one corner (x1, y1, see foto)
scalers should be connected now
current monitor range set to LOW
@start det_current=140nA det_voltage=90V
@end det_current=143nA det_voltage=90V

-----------------------------
Si2_run003.lmd
Start: Wed 28.10.2020 13:30
Stop:  Wed 28.10.2020 13:31

File-Size: 
Events:   
comment: 
ramping of det. voltage for scaler/U-F-Converter test
source in one corner (see foto)
scalers should be connected now
current monitor range set to LOW
@start det_current=140nA det_voltage=90V

-----------------------------
Si2_run004.lmd
Start: Tue 24.11.2020 12:50
Stop:  Tue 24.11.2020 

File-Size: 
Events:   
comment: 
source in one corner (x16, y16, see foto)
@start det_current=138nA det_voltage=90V
@end det_current=nA det_voltage=90V

-----------------------------
Si2_run005.lmd
Start: Tue 24.11.2020 14:57
Stop:  Tue 24.11.2020 15:11

File-Size: 
Events:   
comment: 
source in one corner (x1, y16, see foto)
@start det_current=144nA det_voltage=90V
@end det_current=nA det_voltage=90V

-----------------------------
Si2_run006.lmd
Start: Tue 24.11.2020 15:24
Stop:  Tue 24.11.2020 

File-Size: 
Events:   
comment: 
source in one corner (x1, y16, see foto)
Si_X & Si_Y cabling to MADC_0 and TDC_0 exchanged to get right order of channels/orientation
@start det_current=144nA det_voltage=90V
@end det_current=nA det_voltage=90V

Here is the analysis of the test runs with the 2nd DSSD (gen2) using the quick_si_plots.c script attached.

All 32 Si channels are working with acceptable performance. 

In run001, there are some additional low energy peaks in nearly all x-strips, which I do not understand yet. They are around 3 MeV and are not visible in the y-strips. It doesn't look like an electronic problem, because there are at least 4 
peaks, so not a low amplitude copy of the 3 major alpha peaks between 5 - 5.8 MeV.

However, in run002, the peaks have mostly disappeared, only in x6,x7,x8,x9 is a broad structure at somewhat similar energy... maybe this has to do with the small incident angle of the alphas?

Another run to confirm and double check this would be nice.

Attached is the exported Telegram chat.
There is the simple PDF and the zip-file containing the chat in json-format as well as all media files.

Here are the data file for the rates of the recoil detector for different values of the target bump. The average rate over background is proportional to the target overlap. 

The MCP was operated at a voltage of 2500 V, where it sees mostly photons, so not really recoil ions.

Column "X" is time in seconds, Column "Content" is rate in Hz.

From the previous settings:
JetOn
  mashine number 11
  Event number 55
JetOff
  Machine number 13
  Event number 55

The new settings for our daq:
Jeton
  Machine number 12
  Event nr. 32
Jetoff
  Machine njmber 13
 Event number 55

The LN2 Dewar on the ESR roof has been refilled.

We have managed to find the target position with the beam by looking at the xray spectra. The trick was that at 10mev we 
only have a low increase in the xray rates, so.we went for 400Mev/u where the rate change was dramatic (see in the 
picture)