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- From: "Adelmann Andreas (PSI)" <andreas.adelmann AT psi.ch>
- To: Van de Walle Jarno <jarno.van.de.walle AT sckcen.be>
- Cc: "opal AT lists.psi.ch" <opal AT lists.psi.ch>
- Subject: Re: [Opal] beamline simulation for low energy radioactive ion beams
- Date: Wed, 6 Apr 2022 10:44:52 +0000
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Hi Jarno you need to define the charge for example
REAL f1 = 50.65; // MHz
"RIB":
BEAM,
MASS=E0*1e-3,
charge=1.0,
ENERGY=E_TOT*1e-3,
npart=10.0,
BCURRENT=1.0E-6,
BFREQ= f1;
Still, something seams to be off with the rest-mass. Consider to check by printing some values like:
value, {sr_gamma, E0};
STOP;
Otherwise I will look at this again.
Cheers Andy
------
Dr. sc. math. Andreas (Andy) Adelmann
Head a.i. Labor for Scientific Computing and Modelling
Paul Scherrer Institut OHSA/ CH-5232 Villigen PSI
Phone Office: xx41 56 310 42 33 Fax: xx41 56 310 31 91
Zoom ID: 470-582-4086 Password: AdA
Dr. sc. math. Andreas (Andy) Adelmann
Head a.i. Labor for Scientific Computing and Modelling
Paul Scherrer Institut OHSA/ CH-5232 Villigen PSI
Phone Office: xx41 56 310 42 33 Fax: xx41 56 310 31 91
Zoom ID: 470-582-4086 Password: AdA
Zoom Link:
https://ethz.zoom.us/j/4705824086?pwd=dFcvT1pMMGY0bHg0dTNncUNZZTJkZz09
-------------------------------------------------------
Friday: ETH HPK G 28 +41 44 633 3076
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The more exotic, the more abstract the knowledge,
the more profound will be its consequences.
Leon Lederman
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-------------------------------------------------------
Friday: ETH HPK G 28 +41 44 633 3076
============================================
The more exotic, the more abstract the knowledge,
the more profound will be its consequences.
Leon Lederman
============================================
On 5 Apr 2022, at 15:52, Van de Walle Jarno <jarno.van.de.walle AT sckcen.be> wrote:
<IaM.in>Hello,I’m new to OPAL and I’m trying to simulate a beamline for radioactive ions, which I did in MAD-X, now in OPAL.The properties of the beam are:Mass = 100 (amu)Energy = 60 keV (!)The beamline consists of 4 quad doublets and 1 dipole (112 degrees).In MAD-X this runs smoothly and I wanted to check first of all if I can get similar results with OPAL. The next step would be to include a real 3D magnetic field map for the dipole in OPAL (which is not possible in MAD-X).The first results are not encouraging LI encounter multiple issues – which are probably related to a misinterpretation of the input file needs …E.g.:- when including the dipole, the tracking takes way too long to be realistic (so somewhere the tracking blocks)- If I exclude the dipole (like in the attached inputfile), I see that The Kinetic energy of the beam is suddenly 4.528 GeV with dE = 19.686 MeV ?! No idea why …I’m in any case convinced that OPAL could help us further in the simulation of our Radioactive Ion Beam beamlines and in the future our 100 MeV proton accelerator.May I ask you to run the attached input file and/or hint towards my (obvious, maybe J) mistakes ?Any help is highly appreciated !Many thanks in advance and kind regardsJarnoJarno Van de Walle, PhD
Beam physicist+32 14 33 84 16 ǀ +32 470 20 98 31-<image006.png>Belgian Nuclear Research CentreBoeretang 200 - 2400 Mol – Belgium<image007.png>
-
[Opal] beamline simulation for low energy radioactive ion beams,
Van de Walle Jarno, 04/05/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Adelmann Andreas (PSI), 04/06/2022
-
RE: [Opal] beamline simulation for low energy radioactive ion beams,
Van de Walle Jarno, 04/06/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Chris Hall, 04/06/2022
- RE: [Opal] beamline simulation for low energy radioactive ion beams, Van de Walle Jarno, 04/07/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Chris Hall, 04/06/2022
-
RE: [Opal] beamline simulation for low energy radioactive ion beams,
Van de Walle Jarno, 04/06/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Adelmann Andreas (PSI), 04/06/2022
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