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 [2015/10/26 12:40] pereira [Timing setup] |
tuning_the_s800_xdt [2015/10/26 13:56] pereira [Checking Particle ID and rate at S800 FP] |
||
---|---|---|---|
Line 162: | Line 162: | ||
- | * Select SpecTcl window S800_TOF.win | + | * Select SpecTcl window |
- | * The three columns correspond to the RF-FP ToF (left), OBJ-FP (center), and XFP-FP (right) | + | * The three columns correspond to the **RF-FP** ToF (left), |
* The first (top) row corresponds to the Phillips TDC | * The first (top) row corresponds to the Phillips TDC | ||
* The second row corresponds to the MTDC with all the hits included | * The second row corresponds to the MTDC with all the hits included | ||
* The third row corresponds to the MTDC with only the first hit | * The third row corresponds to the MTDC with only the first hit | ||
- | * The fourth row corresponds to the ORTEC TACs. Note that there is not RF-FP TAC | + | * The fourth row corresponds to the ORTEC TACs. Note that there is not **RF-FP TAC** |
* The two spectra in the fifth row corresponds to the MTDC summary spectra of OBJ-FP and XFP-FP ToFs (zoomed in). The spectra show the ToF (vertical axis) vs. hit number (horizontal axis). In an unreacted setting, one expects to see the most of the " | * The two spectra in the fifth row corresponds to the MTDC summary spectra of OBJ-FP and XFP-FP ToFs (zoomed in). The spectra show the ToF (vertical axis) vs. hit number (horizontal axis). In an unreacted setting, one expects to see the most of the " | ||
* An empty ToF spectrum means that either the delays are not right (and need to be adjusted) or the spectrum range is too narrow | * An empty ToF spectrum means that either the delays are not right (and need to be adjusted) or the spectrum range is too narrow | ||
Line 174: | Line 174: | ||
{{: | {{: | ||
- | * Adjust | + | * If necessary, adjust |
- | * | + | * Using the [[S800 DAQ tools# |
- | * | + | * Select the timing signals (Delay inspect channels) E1 up, OBJ and XFP with the [[S800 DAQ tools#Delay Window|Delay GUI]] and look at them in the scope |
- | | + | * Adjust the TDC delays of OBJ and XFP using the delay boxes connected to the CANBERRA CFD 454 in data U6 |
+ | * Adjust the TDC delays of E1 up, down using the Delay GUI | ||
+ | * In principle, the TACs delays don't need to be adjusted | ||
+ | ==== Checking Particle ID and rate at S800 FP ==== | ||
- | * See [[http:// | + | * Select SpecTcl window **S800_PID.win** in directory **/user/s800/operations/spectcl/Windows** |
- | + | * The three columns correspond | |
- | | + | * The first (top) row corresponds to the Phillips |
- | + | * The second row corresponds | |
- | * The “S800” trigger is from E1 up signal | + | * The third row corresponds to the ORTEC TACs. Note that there is not **RF-FP TAC** |
- | + | * You might need to adjust the limits | |
- | * Trigger | + | |
- | | + | |
- | + | ||
- | | + | |
- | | + | |
- | * The full range of the TDC is 400 ns | + | |
- | * Set each timing | + | |
- | * TDCs of last 4 listed signals (including XF and object scintillators) are bypassed with cable delays inside | + | |
- | * They can be inspected, however using the GUI | + | |
- | + | ||
- | * Information | + | |
- | * The signal delays controlled by the GUI (and not by cable delays) are not “pipelined” -– i.e., any new signals | + | |
- | | + | |
- | + | ||
- | ==== Checking Particle ID and rate at S800 FP ==== | + | |
- | | + | |
- | | + | |
- | * dE-TOF | + | |
- | * dE signal from Ion Chamber | + | |
- | * TOF from XF or Object scintillator | + | |
- | * Not necessary to implement dE- or TOF-based corrections | + | |
- | * Document rate of fragment of interest with run to disk | + | |
- | * Measure beam current with appropriate Faraday cups | + | |
- | * Timed run | + | |
+ | {{: | ||
+ | * Establish PID and measure rate | ||
+ | * Determine the blob that corresponds to the unreacted beam (refer to information on setting from A1900 FP) | ||
+ | * Take gates around the fragment of interest | ||
+ | * Measure the beam intensity the appropriate faraday cup | ||
+ | * Take a run on disk | ||
+ | * Measure the beam intensity again and calculate the average value | ||
+ | * In SpecTcl GUI, click **Attach to File** and select data file **run-xxxx-xx.evt** in directory **/ | ||
+ | * Check the run time and live time from the corresponding scaler file in directory **/ | ||
+ | * Calculate the rate and purity and compare with the value in the A1900 FP to determine the transmission | ||
==== Analysis line classic PPAC setup (Focus optics only) ==== | ==== Analysis line classic PPAC setup (Focus optics only) ==== | ||
* " | * " |