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  nuclear two-photon decay 2024, Page 2 of 6  Not logged in ELOG logo
Entry  Thu May 16 14:52:45 2024, Shahab, DAQ, Zr recording 
Recording Zr starting from 14:45 again back to short cycle.
Entry  Fri May 17 23:30:16 2024, Shahab, General, HHT people inside 
no beam since about one hour, also HHT people inside since about 10 min.
Entry  Sat May 18 00:06:56 2024, Shahab, Runs, HHT people out again 
we try to re run the ESR. ESR behaves very strangely. Something not so right.
Entry  Thu May 16 11:20:10 2024, Sergey, Accelerator, Screenshot of ESR pattern with 140 repetitions (each is 100 ms) 2024-05-16_11-19-01-545.png
Injection Beam Process: 100ms
Bunching Beam Process: 16ms
Intermediate Beam Process: 100 ms, which is repeated 140 times
Intermediate Beam Process: 16 ms
Entry  Thu May 16 12:48:58 2024, Sergey, Accelerator, Tune to 98Zr 
- stop longer measurements
- change quadrupole and sextupole magnets
- rescale SIS-TE-ESR
Entry  Tue May 14 15:07:23 2024, Ruijiu, David, Shahab, Xinliang, Zhangmin, Runs, Cooler curve measurement 7x

Cooler curve measurement

# First run:
# V, RSA01-File, RSA02-File
-2300, RSA01-2024.05.14.15.21.21.576.tiq, RSA02-2024.05.14.15.21.21.334.tiq
-2200, RSA01-2024.05.14.15.22.56.743.tiq, RSA02-2024.05.14.15.22.56.501.tiq
-2100, RSA01-2024.05.14.15.24.17.833.tiq, RSA02-2024.05.14.15.24.17.591.tiq
-2000, RSA01-2024.05.14.15.25.34.248.tiq, RSA02-2024.05.14.15.25.34.006.tiq
-1900, RSA01-2024.05.14.15.26.39.602.tiq, RSA02-2024.05.14.15.26.39.359.tiq
-1800, RSA01-2024.05.14.15.27.41.204.tiq, RSA02-2024.05.14.15.27.40.962.tiq
-1700, RSA01-2024.05.14.15.28.45.781.tiq, RSA02-2024.05.14.15.28.45.539.tiq
-1600, RSA01-2024.05.14.15.29.49.831.tiq, RSA02-2024.05.14.15.29.49.589.tiq
-1500, RSA01-2024.05.14.15.31.02.912.tiq, RSA02-2024.05.14.15.31.02.670.tiq
-1400, RSA01-2024.05.14.15.32.53.806.tiq, RSA02-2024.05.14.15.32.53.564.tiq
-1300, RSA01-2024.05.14.15.34.02.599.tiq, RSA02-2024.05.14.15.34.02.357.tiq
-1200, RSA01-2024.05.14.15.35.32.079.tiq, RSA02-2024.05.14.15.35.31.836.tiq
-1100, RSA01-2024.05.14.15.36.35.601.tiq, RSA02-2024.05.14.15.36.35.359.tiq
-1000, RSA01-2024.05.14.15.37.52.778.tiq, RSA02-2024.05.14.15.37.52.536.tiq
-900, RSA01-2024.05.14.15.39.20.656.tiq, RSA02-2024.05.14.15.39.20.414.tiq
-800, RSA01-2024.05.14.15.40.24.019.tiq, RSA02-2024.05.14.15.40.23.777.tiq
-700, RSA01-2024.05.14.15.41.41.963.tiq, RSA02-2024.05.14.15.41.41.721.tiq
-600, RSA01-2024.05.14.15.42.53.140.tiq, RSA02-2024.05.14.15.42.52.899.tiq
-500, RSA01-2024.05.14.15.43.55.830.tiq, RSA02-2024.05.14.15.43.55.588.tiq


# Second run:

-1400, RSA01-2024.05.14.16.01.38.472.tiq, RSA02-2024.05.14.16.01.38.231.tiq
-1410, RSA01-2024.05.14.16.02.42.778.tiq, RSA02-2024.05.14.16.02.42.536.tiq
-1420, RSA01-2024.05.14.16.03.50.044.tiq, RSA02-2024.05.14.16.03.49.802.tiq
-1430, RSA01-2024.05.14.16.05.04.612.tiq, RSA02-2024.05.14.16.05.04.371.tiq
-1440, RSA01-2024.05.14.16.06.16.606.tiq, RSA02-2024.05.14.16.06.16.364.tiq
-1450, RSA01-2024.05.14.16.07.31.414.tiq, RSA02-2024.05.14.16.07.31.172.tiq
-1460, RSA01-2024.05.14.16.08.43.864.tiq, RSA02-2024.05.14.16.08.43.622.tiq
-1470, RSA01-2024.05.14.16.09.59.912.tiq, RSA02-2024.05.14.16.09.59.670.tiq
-1480, RSA01-2024.05.14.16.11.08.625.tiq, RSA02-2024.05.14.16.11.08.384.tiq
-1490, RSA01-2024.05.14.16.12.12.699.tiq, RSA02-2024.05.14.16.12.12.458.tiq
-1500, RSA01-2024.05.14.16.13.20.061.tiq, RSA02-2024.05.14.16.13.19.820.tiq
-1510, RSA01-2024.05.14.16.14.31.982.tiq, RSA02-2024.05.14.16.14.31.741.tiq
-1520, RSA01-2024.05.14.16.15.30.129.tiq, RSA02-2024.05.14.16.15.29.887.tiq
-1530, RSA01-2024.05.14.16.16.41.026.tiq, RSA02-2024.05.14.16.16.40.784.tiq
-1540, RSA01-2024.05.14.16.17.51.499.tiq, RSA02-2024.05.14.16.17.51.257.tiq
-1550, RSA01-2024.05.14.16.18.49.853.tiq, RSA02-2024.05.14.16.18.49.612.tiq
-1560, RSA01-2024.05.14.16.19.58.297.tiq, RSA02-2024.05.14.16.19.58.054.tiq
-1570, RSA01-2024.05.14.16.21.14.503.tiq, RSA02-2024.05.14.16.21.14.262.tiq
-1580, RSA01-2024.05.14.16.22.29.616.tiq, RSA02-2024.05.14.16.22.29.375.tiq
-1590, RSA01-2024.05.14.16.24.26.365.tiq, RSA02-2024.05.14.16.24.26.124.tiq
-1600, RSA01-2024.05.14.16.25.34.823.tiq, RSA02-2024.05.14.16.25.34.582.tiq
-1610, RSA01-2024.05.14.16.26.43.576.tiq, RSA02-2024.05.14.16.26.43.335.tiq
-1620, RSA01-2024.05.14.16.27.57.633.tiq, RSA02-2024.05.14.16.27.57.391.tiq
-1630, RSA01-2024.05.14.16.28.59.107.tiq, RSA02-2024.05.14.16.28.58.865.tiq
-1640, RSA01-2024.05.14.16.30.03.861.tiq, RSA02-2024.05.14.16.30.03.619.tiq
-1650, RSA01-2024.05.14.16.31.06.942.tiq, RSA02-2024.05.14.16.31.06.701.tiq
-1660, RSA01-2024.05.14.16.32.25.911.tiq, RSA02-2024.05.14.16.32.25.670.tiq
-1670, RSA01-2024.05.14.16.33.46.951.tiq, RSA02-2024.05.14.16.33.46.710.tiq
-1680, RSA01-2024.05.14.16.34.56.720.tiq, RSA02-2024.05.14.16.34.56.479.tiq
-1690, RSA01-2024.05.14.16.36.54.877.tiq, RSA02-2024.05.14.16.36.54.636.tiq
-1700, RSA01-2024.05.14.16.38.06.854.tiq, RSA02-2024.05.14.16.38.06.613.tiq


# Third run:

-1590, RSA01-2024.05.14.16.40.04.235.tiq, RSA02-2024.05.14.16.40.03.994.tiq

here computer crashed.


1. Preliminary result.
Entry  Mon May 6 12:16:09 2024, Ruijiu Chen, DAQ, ntcap scaler ScalerSignalMap20240515.pdf
 
Entry  Thu May 9 10:01:59 2024, Ruijiu Chen, DAQ, NI crate of NTCAP system can not be started. VID_20240508_113353.mp4dc36252cc5b2262cb6eab099009f16ed.mp4comparision_iq.jpgcomparision_sc.jpgcomparision_sc.png
After moving the NTCAP system from HKR to ESR Messhutte, we tested the system with a signal generator on 16th February and confirmed that it was functioning correctly.

On 7th May, I and David tried to start the NTCAP system again. However, the main computer of the NTCAP system took a significantly longer time to boot up on 7th May. We 
managed to collect some data and subsequently shut down the LabVIEW interface on 7th May. The NTCAP system was running well during the test. In the afternoon of 7th May, to 
replace the new monitor, I turned off the NTCAP system except the hard disk of NTCAP.

 

On the morning of 8th May, I noticed an alert warning on the hard disk of the NTCAP system. Moreover, I found the NTCAP computer unexpectedly turned on. When I 
tried to start the system today at the office, it failed to boot. The SP Device indicator was flashing, and then the system powered down by itself.


I am concerned that not shutting down the hard disk might have contributed to these issues, although I am not entirely sure. 

1. Comparison of tdms files between 16th February and 7th May.
iq:
IQ_2024-02-16_11-00-53  0000000.iq.tdms   4196035 kB
IQ_2024-02-16_11-00-53  0000001.iq.tdms   4196035 kB
IQ_2024-02-16_11-00-53  0000002.iq.tdms   4196035 kB

IQ_2024-05-07_10-24-21  0000000.iq.tdms   4196035 kB
IQ_2024-05-07_10-24-21  0000001.iq.tdms   4196035 kB
IQ_2024-05-07_10-24-21  0000002.iq.tdms   4196035 kB

sc:
SC 2024-02-16[11-01-31 0000000.sc.tdms  386 kB
SC 2024-05-07 10-23-49 0000000.sc.tdms  136 kB

The iq and sc files recorded on 7th May are the same as the files which were recorded on 16 February. However, it took a long time to start the NTCAP system on 7th 
May. It seems that the status of NTCAP was wrong on 7 May. 

2. The hard disk of the NTCAP system was the old one on 06 February. The hard disk was replaced on 6th February and 7th May. 
Entry  Thu May 9 15:59:30 2024, Ruijiu Chen, DAQ, Carsten checked the NTCAP system. 
Exactly this was the question. If several devices fail at the same time and you look for the course you might get suspicious.
 
Anyhow,
 
the NAS is working again. I assume this was only a temporary alert. I cannot trace the alert back to something special. One could do a S.M.A.R.T oft he HDDs to read out their status.
 
The bad new ist that the NI PXIe-1075 (crate) power supply seems to have a failure (95% sure). It is in a shuttle unit and can in priciple be replaced as a whole.
The shuttle itself is not easy to open itself, so to really measure the voltages is diffcult/takes some time. I tried to measure the voltages at an external connector (DB9 at backside of the crate) but as 
you might know it doesn’t have a „hard switch“ but some push button that starts some logic. Depending on the number of modules in the crate or if I switch on the fans on full intensity (as a load) the 
power of the crate immediately switches off or stays on a little bot longer. If you take out one or more modules (no particular one) the crate stays on a little bit longer. Some of the modules show an 
error then. I assume is because of wrong/missing power.
Again, I had no chance for a careful measurement of this behaviour, so I am not fully sure whether I am right.
 
Unfortunately, the crate itself cannot be bougth anymore (discontinued), similar ones are incredibly expensive and also usually not on stock
 
I suggest a twofold strategy :  We can bring the „power supply shuttle“ (that i shte name) to a specialist here at GSI, may be Shahab knows someone (or Jan/Uwe). May be there is a quick way to fix it.
In former times weh ad someone here at GSI.
 
Or try to get a new power supply shuttle (but it might be discontinued as well).
 
The full replament part (someone would need to contact NI and/or search the net, if a company/ebay still has it) is called:
 
„PXIe-1075 PowerSupplyShuttle“
I found two part numbers for it:
198136B-01L (original part number ont he back of the deivce)
780292-01 (official replacement part number) . However, NI doesn’t know about it on the web page.
 
http://download.ni.com/support/manuals/372539a.pdf
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019N2CSAU&l=de-DE
 
Evtl. hier anfragen:
https://www.rosenkranz-elektronik.com/de/messgeraete/273795/national-instruments-ni-pxie-1075
 
or datatec, they also have a lot NI Pxie stuff.
https://www.datatec.eu/pxi-chassis
 
ebay?
 
However, again I am not 100% sure about the PS, but there are strong hints.
 
A few notes at the end:
 
Although none of the below is likely the reason for the failure, yet,
 
If a label on crate a states „please leave some headroom for ventilation“ then please do it. There might be a reason.
Please consider the maximum power that can be drawn from a single mains connection. Two crates (NIM/NI) + a server computer are quite something, in particular on a multi-outlet power strip….
Bending of cables, in particular of optical fibres… Don’t bend them two tight. The NI optical cable can also not be ordered anymore. Stiff long cables on tiny connector (found on several places on the NI 
crate).
 
I cannot take further care about the issue since I am pretty busy here with the Etarget beamtime but may be it helps soemhow.
 
Best,
 
Carsten
Entry  Sun May 12 18:34:54 2024, Ruijiu, Analysis, How to use queqiao to transfer tiq data start_OnlineDataAnalysis.jpgqueqiao_rsa.jpg
If the ssh to lxir131 was disconnected, you can connect to lxir131 and restart queqiao program to transfer tiq data from NAS to luster.

1. Open a terminal on any GSI linux computer, like the one in the Measurement Room:


2. start "Online data analysis system":

(base) litv-exp@lxg1478:~$ start_OnlineDataAnalysisSystem


3. click the 3rd button "Copy data from RSA hard disk to luster" to start "queqiao" program.

4. click "start" button on "queqiao" user interface to transfer tiq data on RSA spectrum analyzer.
Entry  Mon May 20 09:01:51 2024, Oliver, Jelena, General, Shift news 
Data collection runs smooth so far.

Yuri Litvinov will start modifying SP magnets now. The resolution will change.
Entry  Thu May 16 07:25:33 2024, Mayr, Hannes, Runs, Lassie Screenshot 07:23 2024-05-16_07-23-30-208_tcl1064.png
Start of regular screenshots of the Lassie monitor every 1-2 hours.
Entry  Thu May 16 07:50:39 2024, Mayr, Hannes, Runs, Peaks with very high particle rate 2024-05-16_07-49-53-757_tcl1064.png
Peaks in the particle diagram going to unusual high 1.4e9 particles.
Entry  Thu May 16 08:58:39 2024, Mayr, Hannes, Runs, Fluctuations in particle rate 2024-05-16_08-58-00-964_tcl1064.png
Particle rates are fluctuating and increasing from a constant 5e8 to something around 1e9.
Entry  Thu May 16 09:41:56 2024, Mayr, Hannes, Runs, No beam 
No beam from 09:39 to 10:10 due to a setting change. The change aims to increase the measurement time to 10s.
Entry  Thu May 16 10:18:14 2024, Mayr, Hannes, Runs, Beam back, DAQ off 
Beam is back since 10:10, but DAQ is turned off to change the setting there.
Measurements starting at 10:18 are only test runs and should not be used for analysis.
Entry  Thu May 16 11:08:27 2024, Mayr, Hannes, Runs, DAQ running again 
"Real" measurement with good data starting from 11:07 until approximately 13:00.
Measurement time was changed to 10s with injections every 32s.
Entry  Thu May 16 11:13:05 2024, Mayr, Hannes, Runs, Rates 2024-05-16_11-10-57-933_tcl1064.png
With the new timing, the rates now look like can be seen in the screenshot.
Entry  Thu May 16 13:04:02 2024, Mayr, Hannes, Runs, DAQ stopped, change setting to 98Zr 
Beam tuning for 98Zr starting at 12:53, following data should be excluded from analysis. DAQ was stopped around 13:13.
Entry  Sun May 19 12:04:55 2024, Kanika, Accelerator, Beam back 
The beam is back.
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