Fixed, e755, Sat Jun 23 21:52:01 2018, takeshi, TARGET, Hardware, N/A, evaporation of the H2 target 
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Here is the temperature log when we evaporate the liquid H2 by heater.
The black line is what we call sensor A, which we monitor usually, and the red line is sensor B, which is the closest sensor to the target window. |
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Fixed, e755, Sat Jun 23 22:03:17 2018, takeshi, TARGET, Hardware, , temperasure log of the target
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I would report the temperature log of the liquid hydrogen target.
We consider it was liquid during the beam time up to now by the beam profile data on the target. |
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Fixed, e755, Sat Jun 23 23:38:32 2018, takeshi, RUN, Social, Cryo-LH2, run summary for 40Ca beam
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run 63-85, total 15.4 hours data was taken
start stop duration runname
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Fixed, e755, Sun Jun 24 12:10:35 2018, takeshi, TARGET, Hardware, , target temperature during warming up
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I would share the temperature log of the target cell during warming it up.
The thick line is the heat shield and the thin line is the cell.
The heat shield may takes 2 hours to reach 200 K and 6 hours for 270K.
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Fixed, e755, Sun Jun 24 13:20:51 2018, takeshi, TARGET, Hardware, N/A, start target cooling
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We started cooling the target cell at 13h03.
It would take 4 - 5 hours to cooling the cell enough low for liquifying hydrogen.
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Fixed, e755, Sun Jun 24 22:13:29 2018, takeshi, TARGET, Hardware, N/A, temperature log of the target
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We liquefied the hydrogen target around 22:00.
I would share the temperature log of the liquid hydrogen target during cooling and liquifying.
Black line is today and the other colors represent the references , The thicker liens are the heat shield and the thinner lines are the cell.
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Fixed, e755, Tue Jun 26 09:28:10 2018, takeshi, TARGET, Hardware, N/A, temperature of the target
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<p>Here is the temperature log of the target up to now. The black lines are today, The thicker line is the cell window this time, not the heat shield and
the thinner line is the cell (same as previous). Though the temperature is rather high, it seems stable. We started cooling 13h00 24th and about 40 hours
has passed since that.</p> |
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Fixed, e755, Wed Jun 27 01:14:54 2018, takeshi, RUN, General, N/A, online run summary
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I made a run summary up to now in the google spreadsheet.
You can see it on
https://docs.google.com/spreadsheets/d/1yErcQcrXPdJjEOfUd9D9KPWWkWQpw5kX4wFze6vwij4/edit?usp=sharing
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Fixed, e755, Wed Jun 27 05:57:49 2018, takeshi, TARGET, General, Cryo-LH2, liquid hydrogen target temperature log
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It seems stable.
We liquified H2 around 22:00 24th (10 hours in the plot), so the target kept liquefying about 55 hours at 6:00 27th.
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Fixed, e755, Wed Jun 27 10:15:36 2018, takeshi, RUN, General, Cryo-LH2, run summary for 38Ca + liq. H2
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Here is the summary of the measurement of 38Ca + liq H2 setting.
We obtain 49.45-hour data acquisition time, which contains 1.4 * 10^6 CATS DIV triggered event.
The CATS DIV factor is 30000 for each CATS, so we can estimate the "gated beam rate", the beam rate including dead time of the DAQ, was 1.2 * 10^5 cps.
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Fixed, e755, Fri Jun 29 07:04:35 2018, takeshi, TARGET, Hardware, Cryo-LH2, target temperature
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Fixed, e755, Fri Jun 29 14:00:51 2018, takeshi, RUN, General, Cryo-LH2, summary for 38Ca + liq. H2, updated
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I would summarize the statistics of 38Ca + liq H2 target measurement.
We have obtained the data of 49.5 hours until 28/6, and we added 3.5 hours more data last night.
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Ongoing, e755, Sat Jun 30 20:12:33 2018, takeshi, TARGET, Hardware, Cryo-LH2, target temperature
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Latest update at 12:15 pm on July 1
Here are the temperature logs up to 7:00pm 30/6. |
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Ongoing, e755, Mon Jul 2 16:16:40 2018, takeshi, TARGET, Hardware, Cryo-LH2, temperature log of the target
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Fixed, e755, Mon Jul 2 22:07:27 2018, takeshi, RUN, General, Cryo-LH2, run summary for 37Ca
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Here is the run summary for the 37Ca beam + liq. H2 target setting.
We have obtained totally 65.7 hours data from 0:44 30/6 until 22:00 2/7 for this settings including 1 hour wien filter tuning.
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Fixed, e755, Tue Jul 3 17:55:01 2018, takeshi, RUN, General, Cryo-LH2, run summary for 40Ca + liq. H2
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We have obtained 6 hours data for the 40Ca + liq. hydogen setting today.
Note that we have already taken 15.6 hours data for this setting at the beginning of the BT.
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Fixed, e755, Tue Jul 3 18:48:52 2018, takeshi, TARGET, Hardware, Cryo-LH2, temperature log of the target
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Here is the temperature log of the liquid hydrogen target,
We kept it about 6 days. |
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Fixed, e738, Sun Jul 8 00:45:44 2018, takeshi, RUN, General, N/A, run summary
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The runsummary for this E738 experiment is available at the same place as previous e755 experiment.
https://docs.google.com/spreadsheets/d/1yErcQcrXPdJjEOfUd9D9KPWWkWQpw5kX4wFze6vwij4/edit#gid=805236919 |
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Ongoing, e738, Sun Jul 8 08:53:44 2018, takeshi, TARGET, Hardware, Cryo-LH2, temperature log of the target
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Fixed, e738, Mon Jul 9 08:00:11 2018, takeshi, TARGET, Hardware, Cryo-LH2, temperature log of the target
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| Here are the temperature log of the cyo H2 target during the 10C setting. |
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