 Sun May 19 17:48:15 2024, xing xu, hongfu, shahab, Runs, Beam back
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beam is back, first file 17:47 |
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Sun May 19 15:13:48 2024, xing xu, hongfu, Runs, No beam
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beam is down 14:45. Problem with UNILAC. may take an hour. |
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Sat May 18 12:31:45 2024, Yuri, Taka, Xinliang, Sophia, Yuanming, Ragan, Shahab, Detectors, Cooler Curve measurements
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Cooler curve measurement, Primary Beam 100 Mo
center Freqs:
243.26875 MHz
408.03925 MHz
Running 13 harmonics
25 MHz
50 MSPS
1 sec
First injection:
-650, RSA01-2024.05.18.12.32.51.008.tiq, RSA02-2024.05.18.12.32.50.799.tiq
-700, RSA01-2024.05.18.12.34.53.819.tiq, RSA02-2024.05.18.12.34.53.611.tiq
-800, RSA01-2024.05.18.12.36.50.332.tiq, RSA02-2024.05.18.12.36.50.123.tiq
-1000, RSA01-2024.05.18.12.37.56.219.tiq, RSA02-2024.05.18.12.37.56.011.tiq
-1100, RSA01-2024.05.18.12.39.29.003.tiq, RSA02-2024.05.18.12.39.28.795.tiq
-1200, RSA01-2024.05.18.12.41.22.539.tiq, RSA02-2024.05.18.12.41.22.331.tiq
-1300, RSA01-2024.05.18.12.42.28.763.tiq, RSA02-2024.05.18.12.42.28.554.tiq
-1400, RSA01-2024.05.18.12.43.33.203.tiq, RSA02-2024.05.18.12.43.32.995.tiq
-1500, RSA01-2024.05.18.12.45.11.816.tiq, RSA02-2024.05.18.12.45.11.608.tiq
New injection:
uncoooled beam: RSA01-2024.05.18.12.49.09.850.tiq, RSA02-2024.05.18.12.49.09.642.tiq
-650, RSA01-2024.05.18.12.50.20.059.tiq, RSA02-2024.05.18.12.50.19.851.tiq
-650 (longer wait), RSA01-2024.05.18.12.52.37.936.tiq, RSA02-2024.05.18.12.52.37.728.tiq
-600, RSA01-2024.05.18.12.53.55.915.tiq, RSA02-2024.05.18.12.53.55.706.tiq
-500, RSA01-2024.05.18.12.55.31.146.tiq, RSA02-2024.05.18.12.55.30.938.tiq
-400, RSA01-2024.05.18.12.56.48.690.tiq, RSA02-2024.05.18.12.56.48.482.tiq
-300, RSA01-2024.05.18.12.58.16.906.tiq, RSA02-2024.05.18.12.58.16.698.tiq
-200, RSA01-2024.05.18.12.59.44.098.tiq, RSA02-2024.05.18.12.59.43.890.tiq
-100, RSA01-2024.05.18.13.00.38.088.tiq, RSA02-2024.05.18.13.00.37.880.tiq
0, RSA01-2024.05.18.13.01.28.466.tiq, RSA02-2024.05.18.13.01.28.258.tiq |
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Sun May 19 14:11:29 2024, Yuri, Sergey, Accelerator, Sextupoles
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at 13:00
scrapers in the ESR are moved to block the most outside orbits
E02DS3HG out -> -60 mm
EEXDS2HA out -> -75 mm
at 13:50
E02KS3 changed from +0.01 to -0.1
E01KS4 is unchanged at -0.26
peaks look somewhat narrower (see telegram) |
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Thu May 16 16:43:29 2024, Yuri, Accelerator, HHT
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HHT sees radiation from us. We stop for 10 min for them to see the speed with which the radiation level decreases. |
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Sat May 18 14:43:59 2024, Yuri, Accelerator, Reduce intensity, 98Mo42+
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reduce intensity
eexds2ha 7mm --> 9 mm
e02ds3hg -69 mm -- stays
measure for about 30 min
9 mm was too much, change to +8 mm |
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Mon May 20 09:01:14 2024, Yuri, Accelerator, Modify SP magnets
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In attempt to remove double-peak structure, we will modify the SP magnets
START: 9:02
SP unchanged. Other values lead to a worse peak shapes.
Scrapers:
EEXDS2HA: -75 mm -> -5 mm (hopefully the left half is scraped)
E02DS3HG: -60 mm - unchanged
STOP: 9:40 |
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Tue May 21 08:50:06 2024, Yuri, Accelerator, EoB
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End of beamtime!
Request is out.
Scrapers are removed, slits in the TE line removed, ESR is ramped down. |
Tue May 21 11:09:15 2024, Yuri, General, Logbook for beam tuning. 
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The version with better resolution is on our wiki page.
https://wiki.gsi.de/pub/ESR_EXP/E0018Experiment/20240521_logbook3.pdf |
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Fri May 17 23:14:51 2024, Yoshi, Ohnishi, General, shift started
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Just test |
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Sat May 18 00:15:44 2024, Yoshi, Ohnishi, General, Beam back
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Beam is back, but it stopped again at 0:17...... |
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Sat May 18 02:04:38 2024, Yoshi, Ohnishi, DAQ, RSA01 run
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RSA01 was stopped from 19:25, it restart now. |
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Sun May 19 11:02:49 2024, Xu Zhou, Yuhu Zhang, Kanika, Accelerator, the beam is paused
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The beam is paused and HHT team needs to enter the ring. |
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Wed May 15 23:04:32 2024, Xinliang, Analysis, Electron cooler data
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The cooler curve measured during May 14 afternoon. |
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Sat May 18 01:57:44 2024, Weick, Accelerator, 96Sr isoc setting
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We fist verified the ESR after a crash with the 98Zr setting, was fine good resolution,
then we scaled to 96Sr directly at gamma_t not with shift as before.
E_SIS = 449.21 MeV/u for 100Mo 38+
after target = 373.36 MeV/u for 96Sr 38+
in ESR = 373.60 MeV/u for 96Sr 38+
in the LISE calculation this leads to gamma = 1.40082 as before in the other settings.
yield is very low now, but some lines. |
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Sat May 18 16:21:30 2024, Taka, Filip, Shahab, DAQ, DAQ start
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16:21 DAQ restart for 96Sr
Acq. time 300 ms, 50 MS/s, span 25 MHz |
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Sat May 18 15:26:46 2024, Taka, Filip, DAQ, DAQ stop
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15:20 RSA DAQ stop -> Sr setting |
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Sun May 19 14:17:57 2024, Shahab, Kanika,hongfu li,xing xu, DAQ, center frequency change for 96Sr
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aiming for 96-Sr:
410 MHz:
The plunger position for 410 is 45, which should correspond to the 408.998 MHz which is expected position for 96Sr. The first file is at 14:38.
245 MHz:
The center frequency is changed to 244.235723 MHz for 96Sr, the new plunger position is 300.The first file is at 14:5 |
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Tue May 14 19:07:27 2024, Shahab, Runs, Broadband measurement / High Sampling rate
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Stable beam after a long time:
from below ones, only the last 4 ones are probably best.
RSA01-2024.05.14.17.36.49.211.tiq
RSA01-2024.05.14.17.38.25.867.tiq
RSA01-2024.05.14.17.38.39.827.tiq
RSA01-2024.05.14.17.38.54.555.tiq
RSA01-2024.05.14.17.39.08.523.tiq
and
RSA02-2024.05.14.17.32.58.640.tiq
RSA02-2024.05.14.17.36.48.947.tiq
RSA02-2024.05.14.17.37.02.258.tiq
RSA02-2024.05.14.17.38.25.603.tiq
RSA02-2024.05.14.17.38.39.587.tiq
RSA02-2024.05.14.17.38.54.315.tiq
RSA02-2024.05.14.17.39.08.283.tiq |
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Tue May 14 21:41:11 2024, Shahab, Runs, Test Screenshot
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