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RE: [Opal] Question about 'deleted particles'


Chronological Thread 
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  • From: Seongyeol Kim <seongyeol.kim AT cern.ch>
  • To: Christof Metzger-Kraus <christof.j.kraus AT gmail.com>
  • Cc: "opal AT lists.psi.ch" <opal AT lists.psi.ch>
  • Subject: RE: [Opal] Question about 'deleted particles'
  • Date: Wed, 6 Nov 2019 10:21:25 +0000
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Dear Christof,

 

Thank you for your consideration.

I am not sure whether there is sort of maximum boundary or the collimators.

At least I did not set the collimators in the lattice setup, and in the tracking solver boundary is open..

 

Thank you for your help again!

Best regards,

Seongyeol
From: Christof Metzger-Kraus [christof.j.kraus AT gmail.com]
Sent: Wednesday, November 06, 2019 11:14 AM
To: Seongyeol Kim
Cc: opal AT lists.psi.ch
Subject: Re: Question about 'deleted particles'

Hi Seongyeol,

I'll have a look at your input file but it'll take a day or two. Usually particles are lost in elements with field maps when they radially leave the range of the map or in collimators. 

Cheers 
Christof


Seongyeol Kim <seongyeol.kim AT cern.ch> schrieb am Mi., 6. Nov. 2019, 10:58:

Dear Christof,

 

Hello, this is Seongyeol Kim of Ulsan National Institute of Science and Technology.

I am currently using the OPAL code for the beamline simulation.

 

Normally, I use ASTRA for the linac section simulation, and using the output file from the ASTRA,

I converted it for the OPAL format (injected) and I used it as an input for the OPAL transfer line simulation.

 

During the simulation, I always face the error 'ParallelTTracker > * Deleted ~ particles, remaining 9031 particles'
I would like to know how to fix this problem. This error occurs from 10 mm propagation (even before entering a single element).

I guess the problem is on the particle distribution, so I checked and flipped the longitudinal distribution

(for the head // tail convention), but still there is the error messgae.

 

Could you please let me know how to solve this issue? Please find attached input files for the issue I have.

Thank you for your consideration and help in advance!

 

Best regards,

Seongyeol

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