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Hi Paul et al.,<br>
<br>
The note from Chris below, from what I can tell, addresses only the
issue of integrating the TDCs into the readout (i.e receiving
trigger signals, gates, etc), but not the use of the TDCs as inputs
to the trigger. From the beginning the tof were considered to be
used as inputs to the trigger, but I know that Sasha's simulation
showed that calorimeter inputs may be sufficient. However, I don't
know if we want to eliminate this option, or at least this should be
considered in the decision.<br>
<br>
Cheers, Elton.<br>
<pre class="moz-signature" cols="72">Elton Smith
Jefferson Lab MS 12H5
12000 Jefferson Ave
Suite #16
Newport News, VA 23606
(757) 269-7625
(757) 269-6331 fax </pre>
<br>
On 2/10/12 2:04 PM, Paul Eugenio wrote:
<blockquote cite="mid:D6E4FCA4-5DC6-4F72-BA17-F3200946B0DB@fsu.edu"
type="cite">
<div>Hi,</div>
<div><br>
</div>
<div>I copied below a message from Chris regarding using the CAEN
TDC in the trigger.</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>
<blockquote type="cite"><span class="Apple-style-span"
style="border-collapse: separate; font-family: Helvetica;
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0px; font-size: medium; ">
<blockquote type="cite"><br>
The good news is that a fanout board has been developed
that distributes the clock from our Trigger Interface (TI)
board to a V1290 TDC. This way there is no need to modify
the commercial (CAEN) boards, and the signal integrity of
the fanout board has been tested with a full crate, using
the front panel clock/trigger connection. (Hall B - Sergey
B.) The TI can be used in a '64x crate and it makes sense
to use a '64x crate in this instance, because the VXS
crate features would not be used by the CAEN TDC. If you
wanted to use other JLAB VXS payload modules in lets say
half the crate, you could still use the CAEN TDCs with the
front panel clock/trigger fanout from the TI. <br>
<br>
I have copied William Gu on this message since he was the
designer of this fanout module and will have the latest
documentation. <br>
<br>
Keep me posted, <br>
-Chris</blockquote>
</span></blockquote>
</div>
<div><span class="Apple-style-span" style="border-collapse:
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<blockquote type="cite"><br>
</blockquote>
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<div><br>
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<div><br>
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<div><br>
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<div><br>
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<br>
<div apple-content-edited="true"> <span class="Apple-style-span"
style="border-collapse: separate; color: rgb(0, 0, 0);
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<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space; "><span
class="Apple-style-span" style="border-collapse:
separate; color: rgb(0, 0, 0); font-family: Helvetica;
font-size: 12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing: normal;
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<div style="word-wrap: break-word; -webkit-nbsp-mode:
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<div>
<div>--</div>
<div>Prof. Paul Eugenio</div>
<div>Florida State University</div>
<div>Department of Physics</div>
<div>Tallahassee, Florida, USA 32306</div>
<div><br>
</div>
<div>(850) 325-0314</div>
<div><a moz-do-not-send="true"
href="mailto:eugenio@fsu.edu">eugenio@fsu.edu</a></div>
<div><br>
</div>
</div>
</div>
</span></div>
</span><br class="Apple-interchange-newline">
</span><br class="Apple-interchange-newline">
</div>
<br>
<div>
<div>On Feb 3, 2012, at 4:50 PM, Elton Smith wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div>HI all,<br>
<br>
I do not think the CAEN TDCs can be integrated into the
trigger, which <br>
could be useful.<br>
<br>
Cheers, Elton.<br>
<br>
Elton Smith<br>
Jefferson Lab MS 12H5<br>
12000 Jefferson Ave<br>
Suite #16<br>
Newport News, VA 23606<br>
(757) 269-7625<br>
(757) 269-6331 fax<br>
<br>
<br>
On 2/3/12 4:31 PM, Elliott Wolin wrote:<br>
<blockquote type="cite">Hi,<br>
</blockquote>
<blockquote type="cite"><br>
</blockquote>
<blockquote type="cite">Use of this board in the Hall D DAQ
will have to be carefully<br>
</blockquote>
<blockquote type="cite">coordinated with Fernando, and with
Alex if it will be part of the<br>
</blockquote>
<blockquote type="cite">trigger system or if there are
unusual requirements for delivering the<br>
</blockquote>
<blockquote type="cite">trigger to it.<br>
</blockquote>
<blockquote type="cite"><br>
</blockquote>
<blockquote type="cite">Further, if we decide to use it
someone will have to present the full<br>
</blockquote>
<blockquote type="cite">plan and board details to the Online
group.<br>
</blockquote>
<blockquote type="cite"><br>
</blockquote>
<blockquote type="cite">Thanks,<br>
</blockquote>
<blockquote type="cite"><br>
</blockquote>
<blockquote type="cite"><br>
</blockquote>
<blockquote type="cite">On 02/03/2012 04:23 PM, Mark M. Ito
wrote:<br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">Folks,<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">Just talked to Dave Abbott of the
DAQ group. He says there is no<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">impediment to using the CAEN
VX1290 in our data acquisition. It supports<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">event blocking, and they have a
way of distributing trigger signals to a<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">crate of boards of this type. He
cautions against mixing these TDC's<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">with other types of boards in the
same crate for efficiency reasons.<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">Hall B will be using these TDC's
and support for their use in CODA-based<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite">systems is already in the plan.<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"> -- Mark<br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><br>
</blockquote>
</blockquote>
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