Difference between revisions of "September 7, 2011"

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Line 2: Line 2:
  
  
−
=Wednesday Run Plan=
+
=Wednesday Run Plan <span style="color:#0000FF">(blue is done)</span>=
  
−
* Tune up beam
+
* <span style="color:#0000FF">Tune up beam</span>
−
* During this time, as much as possible tune up daq timing
+
 
−
* Kicker magnet calibration with viewscreen
+
* <span style="color:#0000FF">During this time, as much as possible tune up daq timing</span>
−
* Pair spectrometer checkout/debugging
+
 
 +
* <span style="color:#0000FF">Kicker magnet calibration with viewscreen</span>
 +
 
 +
* <span style="color:#0000FF">Pair spectrometer checkout/debugging
 
     This should include setting thresholds, studying rates with air converter, looking at rates with photon hole open
 
     This should include setting thresholds, studying rates with air converter, looking at rates with photon hole open
−
       versus blocked, ...
+
       versus blocked, ...</span>
 +
 
 
* Check detector rates with D2O. See if we can get a good time of flight spectrum.
 
* Check detector rates with D2O. See if we can get a good time of flight spectrum.
  
Line 15: Line 19:
 
=Kicker magnet calibration with viewscreen=
 
=Kicker magnet calibration with viewscreen=
  
 +
==displacement ==
 +
[[File:090711 kicker calibration.png || 1000px ]]
 +
 +
==angle==
 +
[[File:090711 kicker calibration angle.png || 1000px]]
  
 
=Pair-spectrometer threshold calibration with beam=
 
=Pair-spectrometer threshold calibration with beam=
Line 38: Line 47:
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator Open. Radiator out (10 um Al).==
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator Open. Radiator out (10 um Al).==
  
−
* upstream PS: 150 mV  threshold,  a cnts/10,000 beam pulses
+
* upstream PS: 150 mV  threshold,  74 cnts/10,000 beam pulses.
−
* downstream PS: 150 mV  threshold,  b cnts/10,000 beam pulses
+
* downstream PS: 150 mV  threshold,  101 cnts/10,000 beam pulses
 +
 
 +
There are effect from radiator in/out, but not so much as wanted.
  
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator blocked (see lab log books). Radiator in (10 um Al).==
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator blocked (see lab log books). Radiator in (10 um Al).==
 
   
 
   
−
* upstream PS: 150 mV  threshold, 19 cnts/10,000 beam pulses (19/545 -> about 96.5% of beam is coming trough collimator!!!)
+
* upstream PS: 150 mV  threshold, 19 cnts/10,000 beam pulses  
−
* downstream PS: 150 mV  threshold, 18 cnts/10,000 beam pulses (18/476 -> about 96.2% of beam is coming trough collimator!!!)
+
* downstream PS: 150 mV  threshold, 18 cnts/10,000 beam pulses  
  
 +
(19/545 -> about 96.5% of beam is coming trough collimator!)
  
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator blocked (see lab log books). Radiator out (10 um Al).==
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator blocked (see lab log books). Radiator out (10 um Al).==
 
   
 
   
−
* downstream PS: 150 mV  threshold, 20 cnts/10,000 beam pulses. About the same as previous, thats good
+
* downstream PS: 150 mV  threshold, 20 cnts/10,000 beam pulses.
  
 +
  About the same as previous, good
  
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam Blocked. Dump in. Collimator blocked (see lab log books). Radiator out (10 um Al). ==
 
==By using TDC to count PS pulses (10,000 beam pulses). Beam Blocked. Dump in. Collimator blocked (see lab log books). Radiator out (10 um Al). ==
 
   
 
   
 
* downstream PS: 150 mV  threshold, 0 cnts/10,000 beam pulses.
 
* downstream PS: 150 mV  threshold, 0 cnts/10,000 beam pulses.
 +
 +
==Summary of counting with TDC (10k beam pulses) for different beam line configuration. -150 mV threshold==
 +
 +
{| border="1" cellspacing="0" style="text-align: center; width: 1100px; height: 550px;"
 +
! scope="col" width="50" height="100" | # as it was
 +
! scope="col" width="80" | Run #
 +
! scope="col" width="150" | PS detector
 +
! scope="col" width="50" | Beam
 +
! scope="col" width="50" | Dump magnet
 +
! scope="col" width="200" | Collimator
 +
! scope="col" width="120" | Radiator
 +
! scope="col" width="50" | Threshold
 +
! scope="col" width="100" | Counts
 +
! scope="col" width="100" | Ratio radiator in/out
 +
|-
 +
|1|| ||upstream(down...)
 +
|On ||In ||Open ||In ||-150 mV|| 545 (476)
 +
|rowspan="2"|7.36 (4.71)
 +
|-
 +
|5||2294 (2293) ||upstream (down...)
 +
|On ||In ||Open ||Out ||-150 mV|| 74 (101)
 +
|-
 +
|6||2295 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 2" Al  ||Out ||-150 mV|| 43 (*)||
 +
|-
 +
|10||2300 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 2" Al  ||In ||-150 mV|| 191 (*)
 +
|rowspan="2"|2.94 (*)
 +
|-
 +
|11||2301 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 2" Al  ||Completely out ||-150 mV|| 65 (*)
 +
|-
 +
|12||2302 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 2" Grafite  ||Completely out ||-150 mV|| 79 (*)
 +
|rowspan="2"|2.40 (*)
 +
|-
 +
|13||2303 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 2" Grafite  ||In ||-150 mV|| 190 (*)
 +
|-
 +
|14||2304 ||upstream (down...)
 +
|On ||Out ||Upstream blocked w/ 2" Grafite  ||In ||-150 mV|| 4093 (*)
 +
|rowspan="2"|1.24 (*)
 +
|-
 +
|15||2305 ||upstream (down...)
 +
|On ||Out ||Upstream blocked w/ 2" Grafite  ||Out ||-150 mV|| 3307 (*)
 +
|-
 +
|7||2296 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 4" Al  ||Out ||-150 mV|| 41 (*)||3.87
 +
|-
 +
|8||2297,2298 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 4" Al  ||Completely Out ||-150 mV|| 30/34 (*)
 +
|rowspan="2"|5.30 (*)
 +
|-
 +
|9||2299 ||upstream (down...)
 +
|On ||In ||Upstream blocked w/ 4" Al  ||In ||-150 mV|| 159/ (*)
 +
|-
 +
|2|| 2289(2290)||upstream (down...)
 +
|On ||In ||Blocked ||In ||-150 mV|| 19 (18)
 +
|rowspan="2"|* (0.90)
 +
|-
 +
|3||2291||upstream (down...)
 +
|On ||In ||Blocked ||Out ||-150 mV|| * (20)
 +
|-
 +
|4||2292 ||upstream (down...)
 +
|Blocked ||In ||Blocked ||Out ||-150 mV|| * (0)||
 +
|-
 +
 +
|}
 +
 +
 +
about meaning of the different adjectives (like completely) see the log books
 +
 +
 +
 +
[https://wiki.iac.isu.edu/index.php/September_7,_2011 go up]

Latest revision as of 17:03, 16 September 2011

go back


Wednesday Run Plan (blue is done)

  • Tune up beam
  • During this time, as much as possible tune up daq timing
  • Kicker magnet calibration with viewscreen
  • Pair spectrometer checkout/debugging
    This should include setting thresholds, studying rates with air converter, looking at rates with photon hole open
     versus blocked, ...
  • Check detector rates with D2O. See if we can get a good time of flight spectrum.


Kicker magnet calibration with viewscreen

displacement

090711 kicker calibration.png

angle

090711 kicker calibration angle.png

Pair-spectrometer threshold calibration with beam

By using analog counter. Beam On. Dump out. Collimator Open. Radiator in (10 um Al).

Thresh upstream beam collim 090711.png Thresh downstream beam collim 090711.png


By using analog counter. Beam On. Dump out. Collimator Open. Radiator in (10 um Al).

was not done


By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator Open. Radiator in (10 um Al).

Thresh upstream beam collim TDCdata 090711.pngThresh downstream beam collim TDCdata 090711.png

  • upstream PS: 150 mV threshold, 545 cnts/10,000 beam pulses
  • downstream PS: 150 mV threshold, 476 cnts/10,000 beam pulses


By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator Open. Radiator out (10 um Al).

  • upstream PS: 150 mV threshold, 74 cnts/10,000 beam pulses.
  • downstream PS: 150 mV threshold, 101 cnts/10,000 beam pulses
There are effect from radiator in/out, but not so much as wanted.

By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator blocked (see lab log books). Radiator in (10 um Al).

  • upstream PS: 150 mV threshold, 19 cnts/10,000 beam pulses
  • downstream PS: 150 mV threshold, 18 cnts/10,000 beam pulses
(19/545 -> about 96.5% of beam is coming trough collimator!)

By using TDC to count PS pulses (10,000 beam pulses). Beam On. Dump in. Collimator blocked (see lab log books). Radiator out (10 um Al).

  • downstream PS: 150 mV threshold, 20 cnts/10,000 beam pulses.
 About the same as previous, good

By using TDC to count PS pulses (10,000 beam pulses). Beam Blocked. Dump in. Collimator blocked (see lab log books). Radiator out (10 um Al).

  • downstream PS: 150 mV threshold, 0 cnts/10,000 beam pulses.

Summary of counting with TDC (10k beam pulses) for different beam line configuration. -150 mV threshold

# as it was Run # PS detector Beam Dump magnet Collimator Radiator Threshold Counts Ratio radiator in/out
1 upstream(down...) On In Open In -150 mV 545 (476) 7.36 (4.71)
5 2294 (2293) upstream (down...) On In Open Out -150 mV 74 (101)
6 2295 upstream (down...) On In Upstream blocked w/ 2" Al Out -150 mV 43 (*)
10 2300 upstream (down...) On In Upstream blocked w/ 2" Al In -150 mV 191 (*) 2.94 (*)
11 2301 upstream (down...) On In Upstream blocked w/ 2" Al Completely out -150 mV 65 (*)
12 2302 upstream (down...) On In Upstream blocked w/ 2" Grafite Completely out -150 mV 79 (*) 2.40 (*)
13 2303 upstream (down...) On In Upstream blocked w/ 2" Grafite In -150 mV 190 (*)
14 2304 upstream (down...) On Out Upstream blocked w/ 2" Grafite In -150 mV 4093 (*) 1.24 (*)
15 2305 upstream (down...) On Out Upstream blocked w/ 2" Grafite Out -150 mV 3307 (*)
7 2296 upstream (down...) On In Upstream blocked w/ 4" Al Out -150 mV 41 (*) 3.87
8 2297,2298 upstream (down...) On In Upstream blocked w/ 4" Al Completely Out -150 mV 30/34 (*) 5.30 (*)
9 2299 upstream (down...) On In Upstream blocked w/ 4" Al In -150 mV 159/ (*)
2 2289(2290) upstream (down...) On In Blocked In -150 mV 19 (18) * (0.90)
3 2291 upstream (down...) On In Blocked Out -150 mV * (20)
4 2292 upstream (down...) Blocked In Blocked Out -150 mV * (0) 


about meaning of the different adjectives (like completely) see the log books


go up

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