close file : run104 (14:12:44)
E127 experiment finishes on a successful note )) Congratulations to the entire team !!

Here is a representation how was the time management during E127. The time, what we could spend with measuring the 118Te(pg), was ~20% comparing to the given 6days.

To move the detector remotely from the HKR:
-go to a desktop of a HKR computer
-right click: "App Launcher PRO"
(-you have to give some password at this point?)
-within the program go to "Development->ProHelper"
-write the name of our slow control unit in the field Nomen: "GE01DD4AS"
-There are 4rows, the middle two called: "Read props", "Write props"

-In "Read props" open "rposiabss" -> if you hit here the refresh button it will show only the SET position
-In "Read props" open "rposiabsi" -> if you hit here the refresh button it will show the REAL-TIME position of the detector

-In "Write props" open "wposiabss" -> here you can set the absolute position of our detector (one click is already enough to execute the command).
 most OUT of the ring  position: -10613 [0.1mm] in absolute
 most IN into the ring  position: -7 [0.1mm] in absolute
 The value can have as big step size as we want contrary to relative movement, when you are limited to something like 20cm.

To close the program just simply hit the "x" buttons.

Run stopped for detector fillings

Jan is filling the detector after run0137.

To find a good Si position, we need to follow a procedure similar to this:

1. Si in max-in position
2. find distance of beam by scraping with detector from inside 
--> zero position
3. from this zero, we need to set a distance of about 1.5 cm to the inside (as shown in the sketch below)

It is likely that this position is not compatible with the complete ESR cycle (e.g. we scrape beam with det. during deceleration).
The solution is to move the beam closer to the detector after deceleration. There are two feasible methods to do this:

A. make a local bump in the dipole
--> check new zero and det. position again, as sketched above
--> in 2016 this method didn't allow to go close enough to the detector, eventually we used:

B. global orbit change (by magnet ramp) + target bump (to keep overlap)
--> this takes a bit more time to set up and also the cycle will be longer at low energies (critical due to life-time)
--> method A is preferred, but might not be strong enough

This needs to be checked and repeated for each new beam setting.

The DSSSD is moved back to its measurement position(-25mm).

• measurement
  d1 = moved back from beam = 15 +/-.5 mm
  d2 = DSSSD frame width = 8.85 mm
  d3 = pg center on DSSSD = 7-7.5 bin = 21.7-23.2 mm = avg = 22.5 mm
  
  --> pg from beam in x = -46.4mm +/- 1.5mm
  --> pg on DSSSD from center ~ -3.28mm +/- 1.5mm
  
  
• simulation
  x = -46.5 mm
  y = 0 mm
  
  
• detector active area position
  x = (-73.35mm) - (-23.85mm)
  y = (-14.2195mm) - 23.5125mm
  
  
• SCRAPING: x=-35mm +/-0.5mm away from beam
  y=(-20mm) - (40mm)
  
  

• measurement
  d1 = moved back from beam = 16 +/-.5 mm
  d2 = DSSSD frame width = 8.85 mm
  d3 = pg center on DSSSD = 7.5 bin = 23.2 mm
  
  --> pg from beam in x = -48.05mm +/- 1.5mm
  --> pg on DSSSD from center ~ -3.28mm +/- 1.5mm
  
  
• simulation
  x = -48 mm
  y = 0 mm
  
  
• detector active area position
  x = (-74.35mm) - (-24.85mm)
  y = (-14.2195mm) - 23.5125mm
  
  
• SCRAPING:
  x=-35mm +/-0.5mm away from beam
  y=(-20mm) - (40mm)
  
  
  

We moved the new detector installation for the first time slowly into the dipole chamber.
The alignement seems to be pefect, no distortion or vertical movement of the detector-arm was observed from the window flange.

The vacuum on the detector side went up from 2e-10 mbar to about 5e-9 mbar.
On the ring side it was 3e-11 mbar befor and 1e-10 mbar after movement.

The extreme positions possible (Endlage) are:

max out: -10613 
max in: -7

These are the absolute positions in units of 0.1 mm

It has to be noted that after bakeout a realignment of the detector was needed in order to have it centered in vertical dimension. However, this realignment has been only slight turns of the base flange alignment screws. In detail, the two inner "Sechskantschrauben" below the bellow have been loosed slightly, while the outer two have been tightend. Additionally, the small "Madenschraube" on the outside has been loosend by 1/4 turn.
In result the detector could be raised in vertical position by about ~5mm (jugded by eye).

The effect of small turning on the screws is extreme on the detector position! Be careful when re-adjusting.

The DSSD has been exchanged and aligned in 
November 2020. After bakeout at 140°C 
(externally, 120°C at internal temp. Sensor) 
for more than a week, the vacuum in the setup 
is roughly 4.5e-10 mbar.

After the bakeout the detector had to be 
realigned, it was lower by 1-2 mm. Using the 
line laser the realignment was done by 
touching only the screws on the far part of 
the base of the flange. These screws have been 
thightend by about a 1/4 turn after releasing 
the headless positioning screw accordingly.

DSSSD moved to the most in position in order to try to scrape the beam with the scraper.

The DAQ located in 

../esrdaq_2018/r4l-58/ 
currently includes the readout of
MADC
Caen 775 TDC
Caen 830 Scaler
MDPP-16

../esrdaq_2018/r4l-58_rewind/
is without the MDPP-16:
MADC
Caen 775 TDC
Caen 830 Scaler

the DAQ located in
../esrdaq_2018/r4l-58_dev/

currently includes
2x MADC
2x Caen V775 TDC
2x Caen V830 Scaler




> The DAQ located in 
> 
> ../esrdaq_2018/r4l-58/ 
> currently includes the readout of
> MADC
> Caen 775 TDC
> Caen 830 Scaler
> MDPP-16
> 
> ../esrdaq_2018/r4l-58_rewind/
> is without the MDPP-16:
> MADC
> Caen 775 TDC
> Caen 830 Scaler

• r4l-58 - VME cpu (RIO)
  our DAQ runs on this computer
  access from lxg1275 via ssh litv-exp@r4l-58
  the current DAQ directory is /esr/usr/litv-exp/2020_e127/r4l-58
  from lxg-machines the DAQ dir can also be accessed via the mount point at /lynx/Lynx/esr/usr/litv-exp/2020_e127/r4l-58
  
  
• lxg1275 - main DAQ handler
  used for communication with the DAQ and primary data writing/streaming
  access from any lxg via ssh litv-exp@lxg1275
  primary data folder: /data.local3/e127/lmd/
  local backup folder: /data.local2/e127/lmd_backup/
  
  
• lxg1299 - online monitoring
  used for the R3Broot online monitor server
  access from any lxg via ssh litv-exp@lxg1299
  online data: /data.local3/e127/online/
  
  
• atpnu004 - slow control
  used for remote access to SpecAmps (MesyTec Shapers), Si-HV (caen) and picoscopes
  access from any lxg via E127_nuc or ssh litv-exp@atpnuc004
  screen sessions: mesy_ioc (shapers), caen_ioc (Si HV)
  access screens by screen -x mesy_ioc or screen -x caen_ioc (exit with [Ctrl-a d])
  access vnc session for picoscopes on any lxg: E127_vnc or vncviewer atpnuc004:1
  
  
• apraspi001 - slow control 2
  used for remote access to the BaF HV crate
  access from any lxg via ssh litv-exp@apraspi001
  local access to HV control by telnet: telnet 169.254.93.160 1527
  
  
• lxg0188 - 1st backup node
  used for direct backup of the written data (invoked automatically by stopping a run)
  backup dir: /data.local2/E127_lmd/
  
  
• kronos.hpc.gsi.de - 2nd backup node
  used for secondary backup of lmd-data on lxg0188 (chronjob every 4 hours)
  backup dir: /lustre/ap/litv-exp/2020-03-17_E127_jglorius
  

• E127_daq or /data.local1/e127/scripts/E127_start_gui.sh
  this is the GUI to control the DAQ
  available on lxg1275 only with litv-exp user
  only one instance of this GUI can run at the same time!
  
  
• E127_unpack or /u/litv-exp/unpacker/unpackexps/e127/e127
  this is the unpacker for the current DAQ
  available on any lxg with litv-exp user
  to unpack lmd-files to root-file: E127_unpack infile01.lmd infile02.lmd --ntuple=RAW,outfile.root
  
  
• E127_epics or epicsfind; medm -x /u/litv-exp/e127/medm/e127.adl
  this is the GUI for slow control of Si HV and amplifiers (MesyTec Shapers)
  available on any lxg with litv-exp user
  
  
• E127_rates or /u/litv-exp/e127/UDP/build_cc_x86_64-linux-gnu_4.9.2_debug/udp_reader --trig --rate
  this is the UDP reader for detector and trigger rates
  available on lxg1275 only with litv-exp user
  
  
  
  
  
  

We stopped data taking as the electron cooler is down.