Settings for the event triggers (on left - machine 6 event 32 / off right - machine 7 event 32) (first picture)

Unplug the black no 1 to twitch of target, but remaining the cycle and triggering of the camera (second picture).

- 238U89+ at the energy of 30.16 MeV/u for the Li-like from excitation --> 1-3 days of beam time
        
- 238U91+ at the energy of 41.035 MeV/u for the He-like from capture --> 10 or more days of beam time

Cycle at present

Typical cycle at present

We reduced the pressure of the gas-jet target at 0:45AM. Now it is about 7E11 (indicated as 7x10E11 in the webpage of the control).
Beam cycle: ~45 s
Target on: 2x5  = 10 s

For the cameras: 
Integration time: 10 s
waiting time: 30 s

Starting from about 23:40 we have a complete set-up with Ge detector and particle detector. Gas jet density about 1.1e12.

Between 23:40a and 00:10 the waiting time of the CCDs was too short --> additional noise in the CCDs.
Then failure of the GE camera too in data07 files.

Starting from 00:45, 
- new gas jet pressure of 7E11 a/cm2
- injection with 1E7 ions
- cycle time: 46 seconds
- measurement time: 10 secons 
- CCD waiting time: 30 seconds

No problem until 5:04 --> failure in the UNILAC

6:30 Zn calibration (01, 20 minutes) but with the ESR cycle still active!! 
6:50 backround calibration (background1)

7:15 Ge detector filling

7:25 Restart new measurement data05

8:45: Closing data05 opening data06

8:50: injection failure in ESR for files n=3-4

8:52 beam is back

(then we try to write here more regularly.....)

Check of the TDC spectrum:it is strange. Uwe and Jan recheck all the chain. Still strange behavior.  
Meanwhile CCD acquisition continued with the folder data07

TDC changed and acquisition restarted.
We have now a 2D histogram time vs energy. We should have some clues to solve the mystery.

Tuning the beam for the Be-like U from capture in Li-like U. 
Energy setting up to 39.293 MeV/u.

We started a run with cooler energy set to 21715 V, corresponding to 21515 V with space charge correction for Be-like from capture.
The acquisition started at the lmd file n. 1100.

Problems from the high frequency in unilac. We stoped the acquisition at 6:50 corresponding to the lmd file n. 1184.
Once the beam back in the SIS, we have a bad injection in the ESR and nobody to adjust it. Because of the plan to go to new settings in the ESR, We stop this beam period and we warm the target to be ready for the week end.

Arrival time vs energy of the Xray from the Ge detector during the beam with Li-like U at 39 MeV/u. Prompt data are visible, due to the capture.
Excitation photons are on the right part only (early arrival time). On the left, due the feature of the multi trigger and the high count rate in the particle detector, the data from capture and excitation are together.
From this figure we concluded that probably the excitation was much less effective than the capture, which was confirmed by last  night data.

around 16 photons in the right energy range after ~5 h of integration.

We startet run on Tuesday 2 am with ~4E7 decellerated ions. 
We get a count rate of ~40 cts per hour in the line.
Target density: ~1.5E12 part/cm2

Starting the acquisition for the He-like U with a H-like U beam at 41.035 MEV/u
Gas jet detector: 2.38E12 part/cm2
Decelerated ions: 4.5E7 ions
Particle: about 1 MHz, saturated

Live X-ray spectrum from U91+ at 41 MeV/u, accumulated within 35.6 h according to Go4.

graph starts covers the whole he-like run from Thursday evening to monday afternoon

run started thursday 21/04/01 20:00,
ended monday 21/04/05 15:20, 
time span of 91.5 h,
we collected 4870 images with a esr cycle of ~62s, 
thats ~84 h of accumulation,
20 s gas jet on time, so we integrated 27,1 h of gas jet on

particle density was 2.25*10^12 particles /cm² at the beginning and increased continuously to 3.1*10^12 particles/cm²

ion beam intensity was between 4-5*10^7 stored, cooled particles per injection

Parameter 	U90+ @ 30.160 MeV/u 	U91+ @ 41.035 MeV/u     U89+ @ 39.293 MeV/u 	
gamme 	        1.0324 	                1.04407                 1.0422 
Ue 	        16556 V 	        22520 V                 21564 V
delta U 	105 V 	                105 V                   105 V
USC (model) 	45 V 	                39 V                    40 V
Ie 	        100 mA 	                100 mA 	                100 mA
HV-Supply BG1E 	16706 V 	        22664 V                 21709 V
HV-divider 	16599 V 	        22553 V                 21598 V 


All data from the voltage divider will be collected and stored.
To be done: evaluation of the uncertainties, offset and linearity.

the large spike in the outer spectrometer is attributed to an open door of experimentierhalle, which we closed at ~17:00 at 21/04/05.
It might be necessary to exclude some of the data between 210405 17:00 and 22:00 since we had a shift of one pixel between these two calibrations

run started 210405 17:50
run ended 210407 11:30
no of files: 1452
ion beam intensity: ~3-4*10^7 decellerated, stored ions in the beginning, only ~2*10^7 after the big break