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

Chronological Thread 
  • From: wangchuan02513 <wangchuan02513 AT>
  • To: ccarson AT
  • Cc: "'Adelmann Andreas (PSI)'" <andreas.adelmann AT>, 'opal' <Opal AT>
  • Subject: Re:[Opal] Help with the multipacting simulation on OPAL
  • Date: Mon, 11 Sep 2017 09:08:42 +0800 (CST)

Dear All,
I have checked out and installed the OPAL-1.6 in the weekends and run a parallel plate test.
I think there are some code updating work to do to get multipacting functioning in OPAL-1.6.
Please give me more time.
Best regards

At 2017-09-09 01:22:20, 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.


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.







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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