Barrel6Analysis

Log books

• Electronic [logbooks]
• For module funnies see Barrel6

Tools etc

• The [bookkeeping] page which allow ROOT files of data to be made for any module and any test.

• These ROOT files have also been generated and tarred together for some runs, on [this page]. Others can be made for any other runs requested - just mail Alan

• Flat files containing the geometry are available at: [this directory]. These have been created from the full xml configuration using geometryDump.

• The [data displays] now allow comparisons between SctRodDaq datasets for any test patameter

• For instructions on how to do analysis of DCS data see Abdel and Kamil's page: [DCS]. The root trees with both Power Supply as well as Environment data for the whole B6 cold test can be downloaded from [this page].

Notes and reports

Note that all of the below should be regarded as work in progress. If you wish to use any of the data below please contact the person responsible.

• SynchTriggerNoise - by Alan Phillips (Cambridge) - SynchTriggerNoiseAnalysis Report can be found at this link -> [B6AnReport.ps]
• DoubleTriggerAnalysis, ChipCounterTest and OPEAnalysis have now been updated with new results from Bilge Demirkoz.
• RxThreshold - An analysis of the RX_min threshold stability was done by comparing the values obtained from the cold run with the data taken during the assembly test runs.
  • The first [plot] shows correlation between the RX_min during the cold run versus RX_min during the assembly runs (three graphs on the plot show the same result in different graphical presentation).
  • The first histogram from the previous plot is magnified [here]. The RX_min values that changed due to the different VCSEL voltage setting are indicated.
  • The new (corrected) [plot] shows the difference between the RX_min of the assembly and cold tests. (Note that there was a bug in the previous version of this [plot] -- by mistake I compared the cold run data of the run nr. 5815-0 with the cold run data of the several run numbers, including run nr. 5815-0. A zero difference of RX_min values has been found for majority of the modules just due to the fact that both RX_min values came from the same run, namely the run 5815-0. Sorry for the mistake and the consequent too optimistic result!).
  • Some of the largest shifts in the RX_min values between the assembly and the cold tests are clearly due to the different VCSEL voltage setting adjusted between the assembly tests and the cold test. I believe that some of the RX fibers have been unplugged and later plugged back in into the BOC in the time between the assembly and the cold tests, which might lead to changes in the optical connections between the RX fibres and the BOC plug-ins.
  • Done by Kamil Sedlak.
• Analysis of the relative humidity, done using the 5 humidity sensors, is shown in this [plot] ([eps]). (There is also another version of the [plot] ([eps]) showing the histograms just in one window). Four of the humidity sensors were located on the inner side of Barrel 6. The last one, namely the Ambience Humidity Sensor, was placed somewhere on the wall of the cold room. The four sensors on the barrel are not calibrated, therefore the absolute values of the humidities were set to some ad hoc values. One of them, namely the Humidity Sensor 2, is completely out of the scale (at approx. -340). The yellow vertical bars indicate the time periods when the low voltage (Vcc) on crate 0 was on. The plots show that the ambience humidity was more or less smoothly increasing during the cold run, while the humidity inside the barrel was significantly fluctuating according to the power supply being switched on and off. Kamil