Difference between revisions of "September 7, 2011"
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| − | =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 62: | Line 71: | ||
==Summary of counting with TDC (10k beam pulses) for different beam line configuration. -150 mV threshold== | ==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: | + | {| border="1" cellspacing="0" style="text-align: center; width: 1100px; height: 550px;" |
| − | ! scope="col" width="100" | # as it was | + | ! scope="col" width="50" height="100" | # as it was |
| − | ! scope="col" width=" | + | ! scope="col" width="80" | Run # |
| − | ! scope="col" width=" | + | ! scope="col" width="150" | PS detector |
! scope="col" width="50" | Beam | ! scope="col" width="50" | Beam | ||
! scope="col" width="50" | Dump magnet | ! scope="col" width="50" | Dump magnet | ||
| − | ! scope="col" width=" | + | ! scope="col" width="200" | Collimator |
| − | ! scope="col" width=" | + | ! scope="col" width="120" | Radiator |
! scope="col" width="50" | Threshold | ! scope="col" width="50" | Threshold | ||
| − | ! scope="col" width=" | + | ! scope="col" width="100" | Counts |
| + | ! scope="col" width="100" | Ratio radiator in/out | ||
|- | |- | ||
| − | + | |1|| ||upstream(down...) | |
| − | |On ||In ||Open ||In ||-150 mV|| 545(476) | + | |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) | + | |On ||In ||Open ||Out ||-150 mV|| 74 (101) |
|- | |- | ||
| − | + | |6||2295 ||upstream (down...) | |
| − | |On ||In ||Upstream blocked w/ 2" Al ||Out ||-150 mV|| 43(*) | + | |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(*) | + | |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(*) | + | |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(*) | + | |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/ | + | |On ||In ||Upstream blocked w/ 2" Grafite ||In ||-150 mV|| 190 (*) |
|- | |- | ||
| − | + | |14||2304 ||upstream (down...) | |
| − | |On || | + | |On ||Out ||Upstream blocked w/ 2" Grafite ||In ||-150 mV|| 4093 (*) |
| + | |rowspan="2"|1.24 (*) | ||
|- | |- | ||
| − | + | |15||2305 ||upstream (down...) | |
| − | |On || | + | |On ||Out ||Upstream blocked w/ 2" Grafite ||Out ||-150 mV|| 3307 (*) |
|- | |- | ||
| − | + | |7||2296 ||upstream (down...) | |
| − | |On ||In || | + | |On ||In ||Upstream blocked w/ 4" Al ||Out ||-150 mV|| 41 (*)||3.87 |
|- | |- | ||
| − | + | |8||2297,2298 ||upstream (down...) | |
| − | |On ||In || | + | |On ||In ||Upstream blocked w/ 4" Al ||Completely Out ||-150 mV|| 30/34 (*) |
| + | |rowspan="2"|5.30 (*) | ||
|- | |- | ||
| − | + | |9||2299 ||upstream (down...) | |
| − | |Blocked ||In ||Blocked ||Out ||-150 mV|| *(0) | + | |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)|| | ||
|- | |- | ||
| Line 114: | Line 139: | ||
about meaning of the different adjectives (like completely) see the log books | 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
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
angle
Pair-spectrometer threshold calibration with beam
By using analog counter. Beam On. Dump out. Collimator Open. Radiator in (10 um Al).
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).
- 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