Difference between revisions of "Tagger trigger timing"
From GlueXWiki
| Line 41: | Line 41: | ||
<td valign="top">80 ns<br></td> | <td valign="top">80 ns<br></td> | ||
<td valign="top">cable MOR to forward carriage<br></td> | <td valign="top">cable MOR to forward carriage<br></td> | ||
| − | <tr> | + | </tr> |
| − | <td valign="top">230 ns<br></td> | + | <tr> |
| + | <td valign="top">50? ns<br></td> | ||
| + | <td valign="top">cable forward carriage to BCAL racks (not installed yet)<br></td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td valign="top">230 + 50 ns? <br></td> | ||
<td valign="top">total delay<br></td> | <td valign="top">total delay<br></td> | ||
</tr> | </tr> | ||
| Line 48: | Line 53: | ||
</table> | </table> | ||
<br> | <br> | ||
| − | Note that the photon flight time from the radiator to the BCAL detector is about 100 ns, and that the RadPhi setup has 250 ns delay cables (straight, or 80+170 using a patch panel). | + | Note that the photon flight time from the radiator to the BCAL detector is about 100 ns, and that the RadPhi setup has 250 ns delay cables (straight, or 80+170 using a patch panel). |
Revision as of 16:43, 14 July 2006
Below is tagger trigger timing information I got from Eugene Pasyuk. Note that cables are trimmed so the sum of all delays is the same for all T-counters
| Delay |
Location |
| 25 ns |
flight time tagger radiator to farthest T-counter |
| 20 ns |
in T-counter PMT |
| 50 ns |
cable to CFD |
| 15 ns |
internal CFD |
| 5 ns |
cable to L-R coincidence logic module |
| 5 ns |
internal L-R coincidence logic module |
| 10 ns |
cable to Master Or module |
| 20 ns |
internal MOR |
| 80 ns |
cable MOR to forward carriage |
| 50? ns |
cable forward carriage to BCAL racks (not installed yet) |
| 230 + 50 ns? |
total delay |
Note that the photon flight time from the radiator to the BCAL detector is about 100 ns, and that the RadPhi setup has 250 ns delay cables (straight, or 80+170 using a patch panel).
