TestbeamOct18MeasurementsSummary < Main

Main Web>DetectorRD>FastTiming>TestbeamOct18MeasurementsSummary (2020-10-16, KevinHeijhoff) (raw view)
---++ LHCb testbeam October 2018 measurements overview
| *Device* | *Measurement* | *TLSCP bias [V]* | *DUT bias [V]* | *Threshold [e]* | *Angle [degrees]* | *Spills per step* | *Spills total* | *Runs* | *Comments* |
| W0011_I05 | Bias scan | 200 | 2.5, 5, [10, 60, 10] | 800 | 0 | 20 | 160 | [31084, 31095] | No t0. See [[TestbeamOct18MeasurementsSummary#softT0Prob][below]]. |
| 3D | Angle scan | 200 | 60 | 800 | [0, 20, 2] | 10 | 110 | [31096, 31098], [31105, 31112] | No t0. See [[TestbeamOct18MeasurementsSummary#softT0Prob][below]]. |
| | Timing uniformity of pixel matrix | 200 | 60 | 800 | 0 | 20 | 120 | 31121, 31125, 31129, [31131, 31133] | No t0. See [[TestbeamOct18MeasurementsSummary#softT0Prob][below]]. Measurements at all the corners. |
| | Long grazing angle run | 200 | 60 | 800 | 85 | 189 | 189 | 31174 | Long run over lunch |
| | Grazing angle scan | 200 | 60 | 800 | 85, 86, 87.5, 97.7, 92.5 | 5 | 25 | 31175, [31178, 31180] | |
| | Bias scan at grazing angle | 200 | 5, 10, 15, [20, 60, 10] | 800 | 88.3 | 20 | 160 | [31182, 31185], 31189, [31191, 31193] | In run 31182, plane 5 has wrong number of phase groups. |
| | Bias scan | 200 | 2.5, 5, [10, 60, 10] | 800 | 0 | 20 | 160 | [31194, 31197], 31200, [31202, 31205], 31207 | DUT not centred, Telecscope planes have way too small cluster size in run 31207 |
| | Bias and angle scan | 200 | 20, 40, 65 | 800 | [0, 45, 3] | 4 | 64 | [31601, 31605], [31607, 31625], [31627, 31651] | |
| | Grazing angle scan at lower bias | 200 | 40 | 800 | 86, 88, 88.3, 88.8, 89.1, 89.5, 90.3 | 5 | 35 | [31664, 31671] | |
| | Telescope bias scan | [25, 200, 25] | 65 | 800 | 0 | 5 | 40 | [31652, 31656], [31661, 31663] | Something wrong with W2F5 in run 31654 |
| W0039_I11 | Long run | 200 | 90 | 700 | 0 | 135 | 135 | 31251 | Long run over lunch. |
| Planar 50 µm | Bias scan | 200 | 5, 10, 15, [20, 90, 10] | 700 | 0 | 20 | 220 | [31257, 31264], 31267, 31268, 31270, 31273, 31277, 31278 | |
| | Grazing angle scan | 200 | 90 | 700 | 86, 88, 88.3, 88.8, 89.1, 89.5, 90.3 | 5 | 35 | [31298, 31304] | |
| | Bias scan at grazing angle | 200 | 15, [30, 90, 30] | 700 | 89.5 | 20 | 80 | 31305, 31306, 31309, 31310 | |
| | Bias and angle scan | 200 | 15, [30, 90, 30] | 700 | [0, 80, 5] | 5 | 255 | [31311, 31315], [31317, 31330], [31332, 31345], [31347, 31362], [31364, 31382] | |
| | Angle scan | 100 | 25 | 700 | [38, 52, 2] | 10 | 80 | 31387, [31390, 31398] | |
| | Threshold scan | 200 | 90 | [500, 1000, 100], [1200, 1600, 200] | 0 | 20 | 180 | [31400, 31407], 31409 | |
| | Threshold scan | 100 | 25 | [700, 1000, 100] | 45 | 10 | 40 | [31425, 31428] | |
| | Threshold scan at grazing angle | 200 | 90 | [700, 1000, 100], [1200, 1600, 200] | 89.5 | 10 | 70 | [31431, 31437] | |
| | Timing uniformity of pixel matrix | 200 | 90 | 700 | 0 | 20 | 100 | [31439, 31443] | Measurements at all the corners and the centre of the chip |
| | Timing uniformity of pixel matrix | 200 | 90 | 700 | 0 | 5 | ? | 31444 | Measurements at all the corners and the centre of the chip in a single run |
| W0020_J07 | Bias scan | 200 | [25, 300, 25] | 700 | 0 | 1 | 12 | [31482, 31493] | Ikrum = 10 |
| Planar 200 µm | Bias scan | 200 | [25, 300, 25] | 700 | 0 | 1 | 12 | [31500, 31506], [31509, 31513] | |
| | Grazing angle scan | 200 | 300 | 700 | 86, 87.5, 88.4, 88.8, 91.2 | 5 | 25 | [31514, 31518] | |
| | Bias scan at grazing angle | 200 | [50, 300, 50] | 700 | 88.8 | 10 | 60 | 31522, [31527, 31531] | |
| | Bias and angle scan | 200 | [100, 300, 100] | 700 | [0, 80, 5] | 5 | 255 | [31532, 31540], [31542, 31556], [31558, 31568], [31570, 31585] | |

*For clarity:* <br />[31084, 31095] means 31084, 31085, 31086, ..., 31093, 31094, 31095 <br />[20, 60, 10] means 20, 30, 40, 50, 60

*See Elog for more details:* <br />Runs 31062 -- 31214: https://webapps.nikhef.nl/elog/Silicon/17 <br />Runs 31215 -- 31444: https://webapps.nikhef.nl/elog/Silicon/18 <br />Runs 31447 -- 31585: https://webapps.nikhef.nl/elog/Silicon/21 <br />Runs 31588 -- 31675: https://webapps.nikhef.nl/elog/Silicon/22
---++++++ <strong><a name="softT0Prob"></a></strong>Software t0 problem

The first three measurements of W0011_I05 were without an external t0 signal and we put in a software t0 synchronisation to fix this. The software t0, however, does not reset the spidr time. As a result, a fraction of the pixel pakcets might have a spidr time that is off by 409.6 µs because the spidr tries to detect pixel packets that arrive too late, by comapring the pixel ToA and the spidr time, and then corrects the spidr time accordingly. It might be possible to salvage this data by using the telescope data.
---++++++ <a name="trigConf"></a>TDC trigger configuration

The table below shows the three different trigger configurations that we had during the testbeam. The downstream scintillator determines the coincidene.

| *Trig. config.* | *Runs* | *DAQ 1* | *DAQ 2* | *DAQ 3* | *DAQ 4* | *DAQ 6* |
| I* | 84&ndash;133 | RICH | - | Scintillator up-/downstream | Coincidence | Scintillator up-/downstream |
| II | 174&ndash;207 | RICH | Scintillator downstream | VELO | Coincidence | Scintillator upstream |
| III | 257&ndash;671 | Scintillator upstream | Scintillator downstream | VELO | Coincidence | RICH |

*Runs without t0.
---++++++ Device configuration

The table below shows which devices were connected to which DAQ machine

| *FMC* | *DAQ 1* | *DAQ 2* | *DAQ 3* | *DAQ 4* | *DAQ 6* |
| 0 | W2J6 | W2C5 | W2G5 | W2H7 | Dummy W11D4/W2E5 |
| 1 | W2B5 | W2D5 | W2F5 | W2I3 | DUT |
Topic revision: r19 - 2020-10-16 - KevinHeijhoff
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