All data acquisitions (both RSAs and NTCAP) are now running.

NTCAP and analysers are stopped at 17:00.Iris goes inside to move the detectors 

20:28 started NTCAP
started queqiao file transfer for RSAs only
started analyzer looper for RSAs

 

We will need to enter the ESR to connect the cables again for our DAQ and then drive in the outside detector for 20min to get some data.
9:35 entered
9:41 exit
9:44 ESR available again

Before changing we check how much we cut with the ESR scrapers
two lines
208Pb80+ with slits intensity 15 arb u
204Hg78+ ... 0.055

Now, slits fully open


208Pb80+ with slits intensity 127 arb u
204Hg78+ ... 0.25

Increase compared to 188Hf measurement:
208Pb80+  increase of factor 8.5
204Hg78+  increase of factor 14

Acquisition stopped at 20:36. 

First file from this setting: RSA01-2025.04.01.03.52.59.247.tiq

Last file from this setting: RSA01-2025.04.01.20.36.54.257.tiq

acq. length changed to 500 ms

acq bw changed to 50 MHz

==> 12 MSamples

Trigger window condition set to 50%.

First file from this setting: RSA01-2025.04.01.20.45.40.053.tiq

Analysis setting the the frame length 2^16 and frame number = 190.

> Acquisition stopped at 20:36. 
> 
> First file from this setting: RSA01-2025.04.01.03.52.59.247.tiq
> 
> Last file from this setting: RSA01-2025.04.01.20.36.54.257.tiq
> 
> acq. length changed to 500 ms
> 
> acq bw changed to 50 MHz
> 
> ==> 12 MSamples
> 
> Trigger window condition set to 50%.
> 
> First file from this setting: RSA01-2025.04.01.20.45.40.053.tiq
> 
> Analysis setting the the frame length 2^16 and frame number = 190.

Last file from previous setting: RSA01-2025.04.01.21.06.30.580.tiq

Changed the RSA01,02 to 50 MSamples/s (20nsec/sample) for 500.00 ms acq. length, 25 MHz acq. BW, 33% trigger position.

First good file from this time: 21:37 04.01.2025 -- RSA01-2025.04.01.21.37.13.721.tiq

23:55 stop the RSAs. 

410:
last file from previous setting (harmonic=211): 2025.04.01.23.55.21.712.
new plunger position for 410 cavity: 33.5 inside and outside.
new center frequency: 410535000 Hz.

245:
harmonic didn't change, still 126.
adjusted center frequency to 243997000 Hz.

00:31 restart the RSAs.
new files from: 2025.04.02.00.31.11.796.

There was no beam from SIS between about 06:28 and 06:39.

Again from 07:02 to 07:11.

And again from 07:49 to 07:55.

We stop taking beam at 10:47 for tuning a new setting. 

Team PLEIADES is wanting to get access for 10 mins to install a remote oscilloscope, so entry to the ESR has been requested. 

The beam was stopped for the evaluation accelerator tour. RSAs and NTCAP stopped now.

Beam stopped due to device trouble.

Beam sharing with FRS is now 1 to 1.

Now we have every injection.

again, ESR : FRS = 1 : 1

Beam was returned to the ESR at 05:11.

HKR said there had been some problem with one of the dipoles and in order to restore it a power supply had to be reset, which took some time.

05:41 data are back in the RSAs. Files that contain data from:
RSA01-2025.04.02.05.41.14.938.tiq_spectrogram.npz
to:
RSA01-2025.04.02.06.24.01.530.tiq_spectrogram.npz


06:24 data not visible again, only noise.

06:43 data are ack in the RSAs. Files that contain data from:
RSA01-2025.04.02.06.43.43.580.tiq_spectrogram.npz

Spike in beam intensity at 06:27 (5x usual intensity) and then beam is lost. HKR says it's a problem with the magnet's power supply. Once the beam returned, the peaks are shifted to the left but are slowly shifting back into position.

HKR just called to say a power supply to the SIS18 extraction kicker has failed.
The service person has been called and is expected to take ~1h to arrive and approx. ~2h to carry out the repair.