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 12:32:03 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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