ID |
Date |
Author |
Category |
Subject |
22
|
Wed May 12 18:59:15 2021 |
Ken Ueberholz | General | Power is back |
Power is back and most things are running again |
23
|
Wed May 12 19:48:24 2021 |
Sebastian | General | DSG821 Network |
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" |
24
|
Wed May 12 22:28:55 2021 |
Ken Ueberholz | General | Bunching succesfull |
Bunching with 2 and 10 bunches succesfull |
25
|
Wed May 12 22:35:33 2021 |
Danyal | General | frev and fb |
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 |
26
|
Wed May 12 22:48:25 2021 |
Sebastian | General | DSG Control SCPI Commands |
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 |
27
|
Wed May 12 22:57:41 2021 |
Sebastian | General | Laser Reprate |
laser reprate is seven times the revoolution frequency: 9.038283 MHz
pulse length: 735ps |
28
|
Wed May 12 23:36:18 2021 |
Ken Ueberholz | DAQ | VI change |
carbon main vi - kopie is now in operation
here, in keysight.vi the input settings for the new impedence for the multimeter are now hopefully correct --> THIS SHOULD BE CHECKED IF THE RING IS OPEN |
29
|
Wed May 12 23:45:23 2021 |
Ken Ueberholz | General | Laser does not reach the exit window |
High rates on the detector at 50mm positions, laser does not seem to reach the exit window. |
30
|
Thu May 13 00:58:53 2021 |
Danyal | DAQ | unbunched ion beam |
|
31
|
Thu May 13 01:01:27 2021 |
Danyal | DAQ | bunched ion beam |
|
32
|
Thu May 13 01:05:45 2021 |
Danyal | DAQ | more stability by bunching |
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. |
33
|
Thu May 13 01:13:06 2021 |
Sebastian | General | Bunching frequencies |
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 |
34
|
Thu May 13 01:21:30 2021 |
Sebastian | General | Current schedule ... so far |
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... |
35
|
Thu May 13 01:55:15 2021 |
Sebastian | General | ESR amplifier reset / laser check |
we had to go into the ESR because the amplifiers hooked up. both amplifiers were resetted!
we also checked why we didnt see the laser at the exit window.
Laser Shutter @ the exit is closed......................... E02VVLF2t needs to be opened! |
36
|
Thu May 13 02:42:58 2021 |
Sebastian | General | Lasershutter ESR Entrance?! |
attached should be the name of the entrance laser shutter. just in case somebody will close it ;) |
37
|
Thu May 13 02:45:29 2021 |
Sebastian | Analysis | ESR pressure |
|
38
|
Thu May 13 03:35:25 2021 |
Lars | General | Status: Current schedule ... so far |
1.) so far:
h = 2, 4, 6, 7, 8, 10, 12, 14, 16, 18, 20, 30
Amplitudes: (10, 50, 100, 150, 200, 250) mV
now we will try to use the laser-toy ;-)
> 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... |
39
|
Thu May 13 18:34:54 2021 |
Ken Ueberholz | General | What happened scince shift change at 4pm |
Ion frequency shifts with laser, both manually and scanned, without bunches: successful
Bunching with 7 and 20 bunches: successful
Tried laser scans with bunches: unsuccessful
Manual laser scans with bunches: successful |
40
|
Thu May 13 20:18:10 2021 |
Benedikt | General | New f_rev |
The ions were changed to a different speed today at 2 PM. The new revolution frequency is now 1.291278 MHz. |
41
|
Thu May 13 21:00:48 2021 |
Benedikt | General | New reprate of the UV laser |
The lasersystem now operates at a reparte of 9.038946 MHz. This is 7 times f_rev (see previous post).
In the future, the laser-bunch-timing can be adjusted. |