tuning_the_s800_xdt
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
tuning_the_s800_xdt [2017/06/17 15:04] pereira [Coincidences] |
tuning_the_s800_xdt [2017/06/27 11:05] pereira [Dispersion Matching Mode] |
||
|---|---|---|---|
| Line 319: | Line 319: | ||
| * Open the NCS application **QtKM** in the Applications Menu. Open file **BLSetup_A1900.gkm**. The magnetic elements that are typically tweaked with the knob box sitting on the left side of u6pc5 are **I232TA**, **I236TC**, and **I245TC** which can be found on page **S800 BLine+Spectrograph**. Other elements used to improve the focusing in the object point, and the transmission are **I172QA** and **I174QB**. The goal of the dispersion-matching tuning is to find a compromise between transmission and resolution. | * Open the NCS application **QtKM** in the Applications Menu. Open file **BLSetup_A1900.gkm**. The magnetic elements that are typically tweaked with the knob box sitting on the left side of u6pc5 are **I232TA**, **I236TC**, and **I245TC** which can be found on page **S800 BLine+Spectrograph**. Other elements used to improve the focusing in the object point, and the transmission are **I172QA** and **I174QB**. The goal of the dispersion-matching tuning is to find a compromise between transmission and resolution. | ||
| | | ||
| - | * The two figures below show the spectrum **CRDC1.XG!FOI-AFP-BFP** before (top) and after (bottom) the dispersion-matching tuning for a typical experiment. Be aware that the width given by SpecTcl for the selected peak is not too reliable. It is more convenient to do a real gaussian fit. Unfortunatelly this is not an option included in the current version of SpecTcl. That's why some device physicists prefer SpecTk for this type of tuning | + | * The two figures below show the spectrum **CRDC1.XG!FOI-AFP-BFP** before (top) and after (bottom) the dispersion-matching tuning for a typical experiment. Be aware that the width given by SpecTcl for the selected peak is not too reliable. It is more convenient to do a real gaussian fit. |
| {{: | {{: | ||
| Line 374: | Line 374: | ||
| * Setup | * Setup | ||
| - | * Coincidence signals are usually visible on scope without running scope in acquire mode | + | * Using the [[S800 DAQ tools# |
| + | * Assign each wire to an inspect channel from the patch panel so that you can check their timings | ||
| * Adjust the width of the early signal (S800 or secondary) should be wide enough to catch coincidences with the late signal (width of late signal is not critical) | * Adjust the width of the early signal (S800 or secondary) should be wide enough to catch coincidences with the late signal (width of late signal is not critical) | ||
| * Readjust TDC delays based on changes made to S800 trigger delay | * Readjust TDC delays based on changes made to S800 trigger delay | ||
| Line 383: | Line 384: | ||
| * This check is required for verification in cases of low beam intensity (e.g. 1000 pps) | * This check is required for verification in cases of low beam intensity (e.g. 1000 pps) | ||
| * Length of run required is typically about 10-15 minutes | * Length of run required is typically about 10-15 minutes | ||
| - | * To be resolved: | + | |
| + | |||
| + | |||
| + | {{: | ||
| + | |||
| * Sample timing for running S800 with SeGA | * Sample timing for running S800 with SeGA | ||
| * SeGA trigger is late with respect to S800 trigger | * SeGA trigger is late with respect to S800 trigger | ||
tuning_the_s800_xdt.txt · Last modified: 2023/09/22 15:15 by swartzj
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
