[Moller_pion_bg] MOLLER Pion Background Phone Meeting Friday 9 am

[Krishna Kumar]

Okay, this is pretty conservative. We can do better than this between 200 and 300 if it becomes an issue, but you might decide you don’t need it, which will save us money. I wonder why it cuts off though? If you didn’t explicitly put in a photocathode QE curve, what physics in G4 cuts it off? If it is gas physics, it would start cutting off below 200, not below 250. Is the scintillator material transparent below 250 or not? I don’t recall this from my prior experience. KK

> On Mar 20, 2017, at 4:08 PM, Wouter Deconinck <wdeconinck at wm.edu> wrote:
> 
> Hi all,
> 
> Since it came up in MOLLER pion detector simulation discussions last Friday, here is the efficiency curve of the photocathode in the pion simulations. UV photons are definitely not registered below about 230 nm.
> 
> <image.png>
> 
> Since someone will ask: from the course code I think it uses linear interpolation, constant value extrapolation outside the given range. So it'd make sense to add a zero efficiency point on both sides of the range.
> 
> Cheers,
> Wouter
> 
> On Tue, Mar 14, 2017 at 3:20 PM, Kurtis Bartlett <kdbartlett at email.wm.edu <mailto:kdbartlett at email.wm.edu>> wrote:
> Hello Everyone,
> 
> As a reminder to the members of the MOLLER Pion Background/Detector working group, there will be a meeting this week on Friday at 9am.
> 
> The agenda for the meeting can be found on the MOLLER wiki:
> 
> https://hallaweb.jlab.org/wiki/index.php/MOLLER_Pion_Background_Meeting_Friday%2C_March_17%2C_2017_9:00am_EST <https://hallaweb.jlab.org/wiki/index.php/MOLLER_Pion_Background_Meeting_Friday%2C_March_17%2C_2017_9:00am_EST>
> 
> Feel free to add any other points of business to the wiki.
> 
> Here is the Bluejeans call information:
> 
> URL: https://bluejeans.com/624029893 <https://bluejeans.com/624029893>
> 
> Phone Number: 1-888-240-2560 <tel:1-888-240-2560>
> 
> Meeting ID: 624029893
> 
> Hope to see everyone there.
> 
> Cheers,
> 
> Kurtis
> 
> 
> 
> -- 
> Kurtis D. Bartlett
> 
> PhD. Research Candidate 
> College of William and Mary Physics Department
> kdbartlett at email.wm.edu <mailto:kdbartlett at email.wm.edu>
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> 
> 
> 
> 
> -- 
> Wouter Deconinck
> Assistant Professor of Physics
> College of William & Mary
> Office: Small Hall 343D
> Phone: (757) 221-3539
> 
> Emails sent to this address are subject to requests for public review under the Virginia Freedom of Information Act.
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