We tried the scrapers a bit, because right of peak some background appeared.

The GE01DS_HI shows a strange effect,
normal -65mm gives good resolution, -30mm kills the beam, but even more in at -15 there is beam again.
We suppose the scraper is not massive but has an empty space behind it.
GE01DS_HA has no effect even at +0V.
Therefore, put I to -100mm and also use GE01DS3HG (from outside),set to -55mm.
Then also the straight section EEXDS2HA from + 8mm to +10mm (a bit more closed).

Opened TE4 slits again to +/-10mm.

Then we tried different scrapers:
in south arc outside: E02DS3HG, cuts at ~ -25mm, at -15mm gone, leave at -35mm.

on straight section: EEXDS2HA cuts at ~ -25mm, leave at -25mm.

EEXDS1HA, closing it to -25mm revealed a double peak structure with distance just like the wanted isomer (-2.2MHz at h=211).
But it is present on all intense peaks at the same distance, so it must be an artefact of a strange isochronicity curve.
Closing it to -15mm even had only the smaller lower frequency line survive.
But then it must be also possible to have only the stronger line. leave at -25mm

This worked with scraper in north arc E01DS_H which can cut from both sides.
The insie can ve iused to cut the lower Brho, 
at -50mm still two peaks, at -45mm left peak almost gone, -40mm left peak gone but right still intense, leave at -40mm.

-> Lower Brho seems to be clearly related to lower frequency, higher Brho side is not so clearly related to frequency.

Measure in this setting, nice void at wanted frequency. But no isomers appear so far.
 

starting filenames:

E143-410MHz-2021.05.09.23.28.24.018.tiq

E143-245MHz-2021.05.09.22.28.12.904.tiq

Uc = 250mA
decay Kr 78, 476 MeV/u

in iso mode

NTCAP is running

the intensity of the line on the left side is so high, it is difficult to see the isomers in the middle as can be seen in the auto generated picture

a reference schematic of the peaks on 410 MHz (211th harmonic) and 245 MHz (126th harmonic)

Here are parammodi saves for TE-line and ESR for all four fragment settings:
For the first run of 72Ge (7.May) I do not have files.

2021-05-09_11-22-51_SIS18_FAST_20210506_ESR_78KR32.C1.txt:# Context: SIS18_FAST_20210506_ESR_78KR32.C1 E143 52Mn
2021-05-09_11-23-12_ESR_EXP21_06_ISO_78Kr_05May21.C1.txt:# Context: ESR_EXP21_06_ISO_78Kr_05May21.C1 E143 52Mn
2021-05-09_15-46-52_ESR_EXP21_06_ISO_78Kr_05May21.C1.txt:# Context: ESR_EXP21_06_ISO_78Kr_05May21.C1 E143 52Mn-2
2021-05-09_15-47-16_SIS18_FAST_20210506_ESR_78KR32.C1.txt:# Context: SIS18_FAST_20210506_ESR_78KR32.C1 E143 52Mn-2
2021-05-09_19-43-28_ESR_EXP21_06_ISO_78Kr_05May21.C1.txt:# Context: ESR_EXP21_06_ISO_78Kr_05May21.C1 E143 70Se
2021-05-09_19-43-45_SIS18_FAST_20210506_ESR_78KR32.C1.txt:# Context: SIS18_FAST_20210506_ESR_78KR32.C1 E143 70Se
2021-05-09_22-23-23_ESR_EXP21_06_ISO_78Kr_05May21.C1.txt:# Context: ESR_EXP21_06_ISO_78Kr_05May21.C1 E143 72Ge
2021-05-09_22-23-37_SIS18_FAST_20210506_ESR_78KR32.C1.txt:# Context: SIS18_FAST_20210506_ESR_78KR32.C1 E143 72Ge

The optimisation of sextuples is finished. Record a few files.

This might have been answered before but I looked at one png file and one tiq file from the same run that was stored on the server. There seems to be an offset of 2.2 s. The png file from the server (right) shows the injection at ~5s, whereas when I look at the tiq file in the GUI (left), the injection is at ~2.8 s???? Is the looper introducing this offset?

This is due to the 50% trigger setting in the spectrum analyzers ))

Beam gone ~0:34.
Working on getting it back.
Back in business ~0:57.

There is new sextupole settings, but the scrapers remain like last night (Helmut setting last night.)

new sextupole setting, isomer not visible yet.

We close the arc inside and straight section inside scrapers to narrow and cut the 70Se line.
Then look what the other lines left of 70Se will do.

1st series with E01DS_HI
 -58  - intensity as before
 -52  - still as before
 -50  - still full
 -45  - less intensity but about same width
 -40  - almost gone 
   0  - gone
 -58  - back to old position

2nd series with EEXDS1HG
 16.0 - full
 15.0 - full
 12.5 - less
 10.5 - less intensity
  9.7 - appears only sometimes
  8.2 - gone
 10.8 - middle intensity and more narrow, measure for a while

We think we see the frequency range of A/q=2.25 at 243.1 MHz.
This would correspond to L=108.2m and E=386.4 MeV/u (gamma_t = 1.3955) at h = 126.
Path length is a bit short, for L=108.4m it should be 370.6 MeV/u. 
(later reanalysis shows the measured frequency corresponds to 108.38m, which is like expected)

We closed scrapers on arc outside and straight section outside to limit Brho from both sides.
GE02DS3HG = -35mm, GEEXDS2AH = -25mm

Expected frequencies see below:

cooling water in UNILAC is out

They are not easy to find, but we do occasionally see what might be the isomer.

increase factor 4 in power for 410 



before:

410MHz-2021.07.01.18.48.07.516.tiq.png


after:

410MHz-2021.07.01.19.23.49.099.tiq.png