M.Steck et al. discussed about the E-Cooler and found a possible issue. They asked for enterance to the ESR. Since nobody else was in the HKR and anyway nothing was running because of some other issues, I told, the experiment would not be disturbed and they could enter and do things. (Sth. like putting some repeller electrodes onto hand and other magical things).
It should take about 10 Minutes and might be already finished by now.

We use different scan types (manual scan) or constant laser wavelengths to check the effects of laser cooling in the Schottky diagrams (fluorescence can not be seen in the detector), for different bunching amplitudes and frequencies:
- Scan from 1028.950 -> 1028.940, stepsize 0.001 every 10 sec
- Scan from 1028.950 -> 1028.930, stepsize 0.001 every 5 sec
- Scan from 1028.950 -> 1028.940 -> 1029.950, stepsize 0.001 every 5 sec
- Scan from 1028.950 -> 1028.940, stepsize 0.0005 "as fast as possible" 
- constant wavelengths around 1028.940
- Scan to wavelengths < 1028.940 (heating) -> Jump to 1028.945 and fast scan back to 1028.940 (-> cooling)

The cooling effects of the laser can be observed well in the Schottky spectra :)

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.

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"

140.181.104.108

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

Attached you'll find a short manual for operating the whole DAQ system

Enhance fluorescence rate and perform 
laser bunch timing 

Right now: Performing several detector tests with scanning laser (triangle) between 1028.930 and 1028.950 nm. Eccoler current @ 10 mA

1.) check h=2,4,6,7,8,10 .... bunching frequencies with different amplitudes (signalgenerator), Ecooler ON, Laser OFF --> record schottky and "normal" DAQ

2.) Ecooler ON, Bunching ON, Laser ON (wavelength fixed and/or scanned)

2.1) Do we see the laser in the Schottky? (The laser has to be on the right side of the bunches and act as a barrier to damp the oscillation of the ions inside the buckets.) 
If not change laser wavelength until we see the laser in the schottky 

2.2) Do we see fluorescence in the XUV Detector signal? Weak fluorescence signal --> check laser-bunch timing by varying the lead delay until we see the highest fluorescence signal. 
If we see no fluorescence signal change laser wavelength until we see fluorescence from the xuv anode signal.

3.) Do we see that some sidebands vanish in the schottky? Does the lifetime of the ion beam increase?
3.1.) If not "play" with Laserparameters, scans, delays, etc...

Bunching with 2 and 10 bunches succesfull

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

The automated laser scans are working now.
We can now scan with the following functions: triangle, sawtooth, cosinus/sinus, arctan, min (linear scan, than stands still)

We are now testing these scan functions with coasting beams; ecooler 10 mA.

we increased the height of the laser beam

TEM Settings
OffsM Ay -0,07
OffsM By -0,35

1VO scratches 6
2VO scratches 3-4

Laser specs:
pulse length -> 482ps

~75mW UV Power inside ESR (depending on laser wavelength)

There are cooling problems of some accelerator devices
short break, hopefully :)
Laser is switched of for some rest