rate of ch4 above 2kHz, too big beam intesivity, highier data rate from: 07:51
 

the beam was stopped at 19:27

the beam start: 19:31

the beam was lost at 20:46. The operator is working to solve the problem.

the beam comes back at 20:54

the beam is stopped at 21:23.

the beam is not the best focused. The operator works on this problem.

the beam starts at 21:27.

But the operators are still working on focusing the beam.

the beam is now good focused

beam stopped 17:54.

beam started 18:04.

beam started 18:04.

Off set of the plunger ~60 um

Distcal file   distcal01_vac

https://docs.google.com/spreadsheets/d/1e2homI9RCYrg369z8aaY3VMIPgapUPOv0zKISsl58vQ/edit?usp=sharing

The data from google sheet obtained 14:17 07/03/23

Plunger Run :

Micrometer :

Supposed Distance:

Position :

Operators tune beam on the target, collecting run 0023, trigger gg.

Run 23 Stopped due to some unexpected spikes in the

voltage of collimator.

The plunger did not responde to change distance.

The chamber was opened and observed some yellow spots

seen over the Cd target.

Run 24 has been started but no beams at the moment.

EAGLE is opened.

Just colecting background.

Using  the data which we've sorted to date, I looked into the gamma-gamma coincidences and have identified a number of nuclei e.g. 50Cr, 52Mn, 55Fe which would be consistent with fusion-evaporation reactions involving the sulphur-32 projectiles and aluminium-27. Such reactions would yield a 59Cu comound system and these channels would be populated as a result of the evaporation of a combination of alphas, protons and neutrons.

These lines are intense and the conicdences are very clear and clean. I think this suggests that the beam is hitting some aluminium components within the plunger chamber. This could be the plunger vessel itself or the target frame perhaps.

There is another interesting observation: some of the identified transitions are emitted from levels which have sub-ps lifetimes. At this plunger distance, we might expect these lines to be fully Doppler shifted as they would decay in-flight well in advance of reaching the stopper. Yet, we observe these lines with their non-Doppler shifted energies suggesting that they are not being emitted in-flight but rather at rest. This might suggest that the 32S+27Al reactions are taking place within some thick piece of aluminium. Some of the lines show signs of having been shifted in energy to some extent which might indicate that not all of the ions are completely stopped. The observed lineshapes seem to be consistent with the short-lived states showing evidence of Doppler shift while the decay of the "longer-lived" states (~9 ps) are very sharp.

I haven't slept for about 24 hours so I may be talking absolute sh*te (famous Scottish word).