Sphenix-tpc-l mailing list

["Kotov, Ivan" <kotov AT bnl.gov>]

Hi Takao,

I would vote for modified ATLAS scheme, slide 5.
The protection is most effective when it is directly connected to the pad and 
~ 1pF capacitance increase looks like a reasonable price to pay considering  
12-33 pF pad cap (slide 3).

my 2 cents,
Ivan

On 12/17/19, 14:26, "Sphenix-tpc-l on behalf of Sakaguchi, Takao" 
<sphenix-tpc-l-bounces AT lists.bnl.gov on behalf of takao AT bnl.gov> wrote:

    Dear All,
    
      I sat down with Vinnie from ATLAS, got some input from
    several others, and came up with a set of input protection
    schemes that we may want to implement in the next
    version of the FEE board and test. See the slides attached.
    
      Vinnie said that the most upstream (detector side)
    resistors had more chance of being damaged compared
    to the downstream, which is reasonable.
    
      I would like to hear your input, hopefully by the end of
    this week. If no input, I would like to go with the proposed
    scheme shown on the slide 8, which has maximum degree
    of freedom for testing as far as I can tell.
    
    Takao