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[videbaek <videbaek AT bnl.gov>]

Hi
just to follow up with experimental info.
The sector 7-6 has voltage 1345 and all other 1390 V.''
The two plots show the cluster ADC distribution for two rows 2 different 
HV settings
The most probable ADC value is 100. and 55. respectively.

I would not like in general to lower the outer sectors apart from 
trouble sections.

best F


On 2024-07-29 11:56, James H Thomas wrote:
> Dear Alexei,
>
> During today's operations meeting, you discussed the possibility of
> running one of the outer TPC sectors at reduced voltage.  I have found
> a set of slides where we discussed this possibility back in 2009.
> See:
> My homepage (link below) => public => TPC => StarAnodes.pdf
>
> or more directly:
>
> https://drive.google.com/drive/u/2/folders/1po9WeNo1SwgW6Oglbf1OZwNGdYiHItcx
> [1]
>
> I agree that decreasing the gain on the anodes by a factor of 1/3 can
> be achieved by lowering the Outer Sector voltage by 45 volts, and/or
> lowering the Inner Sector voltage by 35 volts.    See page 3 lower
> plot, and page 4 summary, bullet 3.
>
> Cheers,
> Jim
>
> --
> Jim Thomas
> Email: jhthomas AT berkeley.edu
> Phone:  USA  (510) 759-4936
> Homepage: https://sites.google.com/berkeley.edu/jhthomas [2]
>
> Please don't feel obligated to respond to this message outside of your
> normal working hours.
>
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--
Flemming Videbaek
senior scientist, emeritus
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596

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