beam is back, first file 17:47

beam is down 14:45. Problem with UNILAC. may take an hour.

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

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)

HHT sees radiation from us. We stop for 10 min for them to see the speed with which the radiation level decreases.

reduce intensity
eexds2ha 7mm --> 9 mm
e02ds3hg -69 mm -- stays

measure for about 30 min

9 mm was too much, change to +8 mm

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

End of beamtime!
Request is out.
Scrapers are removed, slits in the TE line removed, ESR is ramped down.

Just test

Beam is back, but it stopped again at 0:17......

RSA01 was stopped from 19:25, it restart now.

The beam is paused and HHT team needs to enter the ring.

The cooler curve measured during May 14 afternoon.

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.

16:21 DAQ restart for 96Sr

Acq. time 300 ms, 50 MS/s, span 25 MHz

15:20 RSA DAQ stop -> Sr setting

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

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