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sphenix-software-l - Re: [Sphenix-software-l] [minutes] Tue July 7 1-3PM sPHENIX simulation meetings @ 2-187

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Subject: sPHENIX discussion of software

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  • From: John Haggerty <haggerty AT bnl.gov>
  • To: sphenix-software-l AT lists.bnl.gov
  • Subject: Re: [Sphenix-software-l] [minutes] Tue July 7 1-3PM sPHENIX simulation meetings @ 2-187
  • Date: Tue, 7 Jul 2015 16:25:22 -0400

John,

Just to add another point, I used my favored GEANT example AnaEx01 to just add up all the energy from a single incident 50 GeV pi+ in a silly calorimeter:

---> The calorimeter is 10 layers of: [ 1000mm of G4_STAINLESS-STEEL + 1mm of
G4_POLYSTYRENE ]

(i.e., 10 m of steel, and a large transverse size) with all GEANT defaults is that same 45 GeV you mentioned. I tried putting the particle into the middle of the calorimeter to see if there was some kind of albedo going on, and it gave a similar distribution.

On 7/7/15 2:15 PM, Huang, Jin wrote:
Also available on the agenda:
https://indico.bnl.gov/conferenceDisplay.py?confId=1181

*__*

*_John - HCal_*

Page 2:

Chris: "HP" in QGSP_BERT_HP physics list means high precision neutron

Page 3:

Analysis packages available on GitHub, useful for other people to use as
examples:

https://github.com/sPHENIX-Collaboration/analysis/tree/master/HCal-analysis

Page 5:

10% of the energy is missing when sum all sensitive volume.

Chris: did study on hadron shower energy conservation in a large block
of material about one year ago, which showed similar behavior.

*Action Item [Martin]*: Test to energy conservation directly with a
black hole of small radius and a block of large material, in order to
check the consistency.

Page 7:

Achim: shall we also check the spatial distribution of the shower for
different absorber materials?

*Action Item [John]:*will be able to test so.

Page 12:

Jin: suggest plot SF VS CG of the subsystem compartment being
investigated (e.g. inner Hcal only)

*Action Item [John]:*agree

Page 13, 14:

Jin: E_{OFFSET} has to be a function of three measured light yield. How
to estimate?

Craig and John: it is still an open question

John and Chris: good to plan of large scale simulation production jobs
in the July simulation work fest.

______________________________

Jin HUANG

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

Office: 631-344-5898

Cell: 757-604-9946

______________________________

*From:* Huang, Jin
*Sent:* Monday, July 6, 2015 2:58 PM
*To:* 'sphenix-software-l AT lists.bnl.gov'; phenix-nextmid-l
*Subject:* [One-time different room 2-187] Tue July 7 1-3PM sPHENIX
simulation meetings @ 2-187

Dear All,

This is reminder of our weekly sPHENIX simulation meeting Tue July 7
1-3PM. For residents at BNL, we will meet in the *2-187 conference room*
(back to regular room next week).

Currently on the agenda are HCal simulation update by John Lajoie. More
topics are welcomed too.

The agenda page is at
https://indico.bnl.gov/conferenceDisplay.py?confId=1181 , for which the
modification password is *1008*

To join via Browser:

https://bluejeans.com/377457648/browser

To join via Phone:

1) Dial:

+1 408 740 7256

+1 888 240 2560(US Toll Free)

+1 408 317 9253(Alternate Number)

(see all numbers - http://bluejeans.com/numbers)

2) Enter Conference ID: 377457648

Cheers,

Jin

______________________________

Jin HUANG

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

Office: 631-344-5898

Cell: 757-604-9946

______________________________



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--
John Haggerty
email: haggerty AT bnl.gov
cell: 631 741 3358

Attachment: allenergy50.pdf
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