Because the C3+ part of the ion beam is properly bunched, it is no longer so sensitive to the drifts caused by the e-cooler. 
In the O4+ part of the ion beam these drifts can still be seen. 

Attached to this elog entry is a short manual for the xuv-detector control. If anything is missing or not understandable I can change anything.

Rate was very low: ~ 100Hz
Adjusted Walk level and Threshold, new rate: 5kHz
Additionally, parameters of the detector were varied for optimization but were returned to default afterwards.

Telephone numbers:

ESR laser lab: +49 (0)6159 71 - 2882
ESR measurement hut: +49 (0)6159 71 - 2880
HKR (main control room): +49 (0)6159 71 - 2317 or 2245

here is the zoom information:

https://tu-darmstadt.zoom.us/j/2183997317?pwd=WGc2TEkxYlEyNFhMWm02bFhqRnRVUT09

Meeting-ID: 218 399 7317
Passwort: 481607

The operators are still busy extracting the beam from the SIS18 towards the ESR and injecting it into the ESR. 

I just heard that the ESR vacuum is quite bad. 
There was a small vacuum problem a while ago, it was sealed, but apparently the pressure is not as low as usual.

Markus Steck said that the beam lifetime is only 15 - 20 seconds !!! 

This will seriously complicate some of our test experiments :( 

The ion beam moves around, pretty arbitrary. See picture. 
ESR crew believes that it is not due to fluctuations in the HV of the E-Cooler. 

looks like the E-Cooler is responsible for this. If one turns off the electron current, the beam stays stable. 
M.Steck is informed.

> The ion beam moves around, pretty arbitrary. See picture. 
> ESR crew believes that it is not due to fluctuations in the HV of the E-Cooler. 

Power is back and most things are running again

To implement the bunch Signal Generator (DSG821 inside ESR) you have to:

1. unplug the Ethernet cable
2. under System / io config set the ip address
3. set Sub mask
4. set DNS
5. very important: than press Apply!
6. plug in Ethernet cable
7. than a message like "successfully connected to network" should show up
8. you can crosscheck the Settings by pressing the "eye symbol"

Bunching with 2 and 10 bunches succesfull

Schottky frequency (189th harmonic) = 244.033662 MHz

revolution frequency  frev = 1.2911834 MHz

bunching frequency h=2  --> fb = 2.582367 MHz
bunching frequency h=10  --> fb = 12.911834 MHz

Open Ultra Sigma
Press LAN
Press Search, after a while the whole rigol devices are shown. Press ok
Than you see the DSG821 (140.181.104.108) as online
right click -> open SCPI Command Terminal


*IDN?                 check for remote control
:FREQ 1.291MHz        set the RF Frequency to 1.291MHz
:FREQ?                return current frequency
:LEV 0.2V             set the amplitude to 200mV
:LEV?                 return current amplitude
:OUTP ON / OFF        set RF output ON or OFF
:OUTP?                returns 0 if output is OFF, returns 1 if output is ON

after some time there is an automatic logout of the scpi command panel. Close the panel and reopen the SCPI Command Terminal again to reconnect to DSG821 Signalgenerator. 
If this does not work, close the whole ultra sigma program, also in the taskbar (right click -> exit) and execute Ultra Sigma Program again

laser reprate is seven times the revoolution frequency: 9.038283 MHz
pulse length: 735ps

High rates on the detector at 50mm positions, laser does not seem to reach the exit window.

relating to Danyals ID 25 post are the current bunching frequencies:

h=2      -->     2,5823668 MHz
h=4      -->     5,1647336 MHz
h=6      -->     7,7471004 MHz
h=7      -->     9,0382838 MHz
h=8      -->     10,3294672 MHz
h=10     -->     12,911834 MHz
h=12     -->     15,4942008 MHz
h=14     -->     18,0765676 MHz
h=16     -->     20,6589344 MHz
h=18     -->     23,2413012 MHz
h=20     -->     25,823668 MHz
h=30     -->     38,735502 MHz