ELOG AIDA

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

AIDA

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Entry time:	Sat Mar 29 12:37:04 2025
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I wrote this LISE++ file based on the Takechi .lpp modified by AE for 77Ni, 78Ni, 76Ni. Basically, I changed the primary beam to 48Ca, reduced the production target thickness to 1 mm (I think it may be correct), inserted the carbon target at F8, and made the RIB as 41Al and had it calculate the optics. Then I modified by hand D7 and D8 Brho settings to like 6.32 Tm which is something near the correct value (for plastic, but I forget for carbon, slightly different perhaps?) Then I make a fairly arbitrary dE-ToF plot (attachment 1) without any concern for what data it thinks is filling the plot, and run the Monte Carlo simulation. This may give a user some kind of naive picture of what sorts of ions we might expect, with a basic clue about their relative intensity or improbability to detect. I did this work in literally about 5 minutes total, so do not take it too seriously. It is definitely not right, but it is not totally nonsense either. You can play with the .lpp file (attachment 2) if you want to improve it. You should definitely get the degraders used within BigRIPS correctly. I imagine they are much thicker, because D6 being 8.42 Tm is much too high (it was more like 7.5 Tm or so?) The other things you can (and should) add is things at F11 like our degraders, AIDA, and so on. I heard Gabor might do this at some point, but he may have become very busy with other tasks. Attachment 3 shows some relative intensities numerically. Again, you should not really trust this. However, let's take some known experimental values. I recall that at the BigRIPS F11 Pla. scaler, when we did the 41Al unreacted measurement, it was about 30 cps = 108000 counts per hour I think we had about several counts per hour of 40Mg in the best case reaching to F11. It means that 41Al and 40Mg ratio is around order 10^5 difference. Surprisingly, this is nearly the same as the results of this quick LISE++ simulation (attachment 3 has numbers) Encoding: HTML ELCode plain Suppress Email notification

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