[dsg-svt] Location of SVT sensitive components on the service cart

[Yuri Gotra]

Hello Brian,

The reason is detector safety. We need to do our best to protect the 
sensitive components. We had questions and recommendation on this during 
the ERR. As past operational experience shows, correctly estimate all 
possible beam (and beam loss) induced failures in advance is not always 
possible. Distance and shielding are common practices. The crates must 
be on the cart for technical reasons. Moving the switches to the racks 
should not be a big deal. It would be important to review which 
components could be moved (and the related cost). Operational cost (the 
cost of detector down time and repairs of the failed components) could 
easily exceed the cost of measures aimed at detector protection. I'll 
forward you my today's presentation at the TCB meeting related to your 
question.

On 3/3/17 11:12 AM, Brian Eng wrote:
> Hi Yuri,
>
> We can move the switches (and maybe some of the UPSes [this might require cart modifications by Hall B Engineering]) to the bottom corners of the cart, but moving them to the racks would be quite a big change (and a lot more time/money to implement).
>
> Is there any actual reason to think the corner locations on the cart are to high of a dose for the equipment to be placed?
> --
> Brian Eng
> Detector Support Group
> 757-269-6018

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