Linear Collider

[Arindam Das]

Dear Delphes Team ,

How to perform the detector simulation for the Linear Colliders such as ILC and CLiC ?
The Delphes only contains cards for the LHC (CMS and ATLAS ). I think we can modify the CMS / ATLAS cards for a Linear Collider. How ? Can you share it with me ? Is there any tutorial ?

I am familiar with MadGraph.

Regards,
Arindam

[Arindam Das]

Hello, I followed the instruction given in https://cp3.irmp.ucl.ac.be/projects/delphes/ticket/266 for attached .hep file . I am getting the following error.

WARNING : cannot access branch 'Track', return Null pointer

• BREAK* segmentation violation

There was a crash.
This is the entire stack trace of all threads:

The ./root2lhco converter is converting the .root file with 10000 events into a 0 event .lhco file.

The higher versions of the DELPHES does not contain delphes_card_TLEP.tcl in Delphes-3.x.x/examples/

Can you please enlighten me what to do ?

I have attached the .hep file with this mail

Regards,
Arindam

[Michele Selvaggi]

Hi Arindam,

sorry for the late reply.
To answer your first question, the best is that you start with the card "delphes_card_FCC_basic.tcl" but keep in mind that it is simply a prototype for future colliders and should not be used for publishing studies for now. Otherwise simply use CMS or ATLAS cards which won't be that far from ILC/CLIC detectors anyway. We will release somewhere in the future something more specific for future colliders.

Concerning the conversion from root to lhco, it will work only on output files produced with ATLAS and CMS cards. If you still want to use some other card and the lhco format (which I don't recommend since ROOT format contains more information, and there are examples in the examples directory on how to use the output in ROOT format) , you will have to modify accordingly the file "converters/root2lhco.cpp".

Cheers,
Michele

[Arindam Das]

Dear Michele,

Thank you very much for your detailed and kind reply.
I'll use the CMS/ ATLAS card for the linear collider study.

It's a great help for me.
Thanks a lot!!

Regards,

Arindam