Re: HV distribution update

[Elton Smith <elton@jlab.org>]

Hi Fernando et al.,

With the new arrangement of HV cards, has anyone looked at the impact on
tracking from the dead region when a channel trips off? If not, it might
be useful to go through an exercise of failure scenarios with a given
mapping for the HV.

Thanks, Elton.


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Hello everyone,

I have updated the HV distribution document (GlueX-doc-967, also
accessed through the electronics wiki) to reflect the HV connectors and
HV power supply modules specified for construction. I have also
forwarded the connector specs to Bill and Slava.

The FDC has been impacted by grouping a larger number of wires (sense
and field) which now requires 4 HV channels per wire plane, instead of
6. In this manner, one FDC package requires one +HV module and one -HV
module with two multi-pin HV connectors.

The CDC requires 6 multi-pin HV connectors, instead of 4, because each
HVB is fed by a +HV channel.

Regards,
Fernando

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