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Re: [Opal] Help with the multipacting simulation on OPAL

Chronological Thread 
  • From: "Adelmann Andreas (PSI)" <andreas.adelmann AT>
  • To: "ccarson AT" <ccarson AT>
  • Cc: "opal AT" <Opal AT>
  • Subject: Re: [Opal] Help with the multipacting simulation on OPAL
  • Date: Sun, 10 Sep 2017 13:36:57 +0000
  • Accept-language: en-US, de-CH

Hi Cantrell

On 8 Sep 2017, at 19:22, ccarson AT wrote:

Dear All,
I am eager to reproduce the results in 1208.6577 and grateful for the assistance. I might recommend adding the installation of zlib to the “Compile opal on rhel6” page, somewhere before the compilation of opal.

I added zlib as required library.  

This caused the make command for opal to fail right before finishing. Also, I needed to change permissions of the /usr/local/, /usr/local/lib, and /usr/local/include to 777 and then back to 755 for the make install to complete copying some files around. Otherwise, it seems to be up and running. OPAL is a great help and I look forward to applying it.

Instead of changing permissions you can use “sudo” to make the installation,


From: opal-request AT [mailto:opal-request AT] On Behalf Of Adelmann Andreas (PSI)
Sent: Thursday, September 07, 2017 7:21 AM
To: ccarson AT
Cc: Christof Metzger-Kraus <christof.j.kraus AT>; Chuan Wang <wangchuan02513 AT>; opal <Opal AT>
Subject: Re: [Opal] Help with the multipacting simulation on OPAL
Hi Cantwell 
The multipacting mode is only available in OPAl 1.6. So after cloning the master,
change to the 1.6 tag with:
% git checkout OPAL-1.6
Chuang Wang in the cc can help you to get the parallel plate test running. This is 
First thing you should do, the results are documented in 1208.6577 . We are about 
to finalise this paper.
For running something like:, you would need to have a geometry. Also here Chuan is 
The right person to ask.
Cheers Andreas 
Dr. sc. math. Andreas (Andy) Adelmann
Staff Scientist
Paul Scherrer Institut WBBA/219 CH-5232 Villigen PSI
Phone Office: xx41 56 310 42 33 Fax: xx41 56 310 31 91
Phone Home: xx41 62 891 91 44
Friday: ETH CAB F37 or HPK G 28   +41 44 632 75 22
The more exotic, the more abstract the knowledge, 
the more profound will be its consequences.
Leon Lederman 
On 6 Sep 2017, at 20:27, Christof Metzger-Kraus <christof.j.kraus AT> wrote:
Dear Cantwell, 
I haven't ever used the multipacting feature of opal and I don't know in what state the relevant code is. Unfortunately I also don't have the time to look into it in depth: I work for a funding agency and I can't work on opal during office hours. 
I hope Andreas and Achim can help you with your problem. 
Am 06.09.2017 3:12 nachm. schrieb <ccarson AT>:
Dear Christof,
My name is Cantwell Carson and I am hoping you can help me.
We are making multipaction suppression coatings and I want to create the multipaction susceptibility zone maps for V vs I would like to use OPAL but am having trouble compiling OPAL and running the demo. I have installed OPAL 1.6, but this is incompatible with the 1.9 code on master branch. I have been using a virtualbox and installing opal on SL7 and will try installing the opal nightly on a clean install. This would be the latest in several tries to get the simulation working, and I thought I would ask you for any advice that you might have. 
Could you help me get the simulation running on OPAL 1.9 on a clean installation of SL7?

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