Sphenix-tpc-l mailing list

[Nikhil Kumar <nikhil.kumar AT stonybrook.edu>]

Hey,

Yes, we reached the same conclusion during the meeting.

We are going to test some configurations with the items I referenced. 

I'm not really sure how I ended up there either. It may be that the vpn I am running connected me to the uk and the website forwarded me there. Regardless, thank you for sending the us links.

From, 

Nikhil Kumar

On Fri, Sep 4, 2020, 10:50 AM Dan Cacace <dannycacace AT gmail.com> wrote:

Hi Nikhil, Bob and all,

Sorry I couldn't make the meeting. It seems to me that the best solution is one 50deg diffuser tilted at about 17deg. It's the cheapest, simplest and least position sensitive option with the best uniformity at the cost of less than 1% of photons. Is that the same conclusion you reached in the meeting?

Also, I'm not sure how Nikhil found himself on the UK side of edmund optics, but here are the US links: 40deg and 50deg, both for $350ea.

-Dan

On Fri, Sep 4, 2020 at 10:00 AM Nikhil Kumar <nikhil.kumar AT stonybrook.edu> wrote:

Hey,

specifically, we would like to order:

1x edmund optics 50 degree diffuser https://www.edmundoptics.co.uk/p/50deg-diffusing-angle-25mm-dia-uv-holographic-diffuser/8758/  

@ 297.50 GBP=$ 392.70 USD

and 

2x edmund optics 40 degree diffuser https://www.edmundoptics.co.uk/p/40deg-diffusing-angle-25mm-dia-uv-holographic-diffuser/8757/ 

@  (297.50 GBP)*2=($ 392.70 USD)*2=$785.4 USD

from, 

Nikhil Kumar

On Fri, Sep 4, 2020 at 9:48 AM Nikhil Kumar <nikhil.kumar AT stonybrook.edu> wrote:

Hey,

Here is the page for the Edmund Optics UV Holographic diffusers.

https://www.edmundoptics.co.uk/f/holographic-uv-diffusers/12652/ 

Here is the page for the 50 degree diffuser from the same where the diameter of the piece is 25mm. The clear aperture is listed as 21.6mm. The stock number is #48-512.

https://www.edmundoptics.co.uk/p/50deg-diffusing-angle-25mm-dia-uv-holographic-diffuser/8758/  

There is also a version with a diameter of 50mm. 

The piece with a diameter of 25mm is of course cheaper.(300 GBP vs 470 GBP)

From, 

Nikhil Kumar

On Thu, Sep 3, 2020 at 6:06 PM Bob Azmoun <azmoun AT bnl.gov> wrote:

Dear All,

Just a friendly reminder that we will have our weekly laser calibration meeting tomorrow at 9am. 

A link to the Indico page is here: https://indico.bnl.gov/event/9343/

and the bluejeans link is here: https://bluejeans.com/881710315

I put together a tentative agenda, but please feel free to modify it and upload any material you wish to present. 

Talk to you tomorrow!

Cheers,

Bob

--

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B. Azmoun
Brookhaven National Laboratory
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P: (631) 344-4082
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