1 / 15

Six modules Micromegas TPC beam test & Test bench

Six modules Micromegas TPC beam test & Test bench. D. Attié , P. Colas, M . Dixit, P. Hayman, W . Wang. 7 Micromegas modules with integration of electronics. 2012-. 2008-2011. 6 Modules Test.

read
Télécharger la présentation

Six modules Micromegas TPC beam test & Test bench

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Six modules Micromegas TPC beam test & Test bench D. Attié, P. Colas, M. Dixit, P. Hayman, W. Wang W.Wang_RD51 mini week

  2. 7 Micromegas modules with integration of electronics 2012- 2008-2011 W.Wang_RD51 mini week

  3. 6 Modules Test In July 2012, 6 modules were installed on the endplate of LP-TPC at DESY and tested at the same time. Data were taken with cosmic rays and 5 GeV e- beam. Cosmicevent W.Wang_RD51 mini week

  4. Event display (the first 100 triggers of a good run) Each module has 1726 pads (24 rows x72 columns) W.Wang_RD51 mini week

  5. Crack scan Outside crack x 5 GeV e- Beam In crack Lower crack Upper crack Padrownumber (3x24=72) W.Wang_RD51 mini week

  6. Crack scan Number of hits vs x (72 pad-rows) Study the hit reconstruction efficiency at or near the crack: take data with beam, moving by steps of 2mm W.Wang_RD51 mini week

  7. Gain study Using the fitted MPV of the (Landau) distribution of the measured charge Effective gain vs drift distance (Vmesh=380V, Vdrift=140V/cm, peaking time 100 ns and 400 ns) Effective gain vs meshvoltage (comparedwith the direct gain measurementsusing55Fe source on a bulk detector withoutresistive foil) W.Wang_RD51 mini week

  8. Track fit W.Wang_RD51 mini week

  9. Residuals by padrow Row Number: 3 x 24 = 72 Displacement in mm (b): Afteralignment df= 2.9 ,2.1 and 2.2 mrad dx = 47 µm,  -43 µm and -52 µm (a): Before alignment One module has 1726 pads (24 rows x72 columns) W.Wang_RD51 mini week

  10. Test Bench The 55Fe source is put in an aluminum collimation tube and fixed on a set of two mechanical arms (X-Y). W.Wang_RD51 mini week

  11. Test Bench Module S7H - ~5 disconnected pads + someat the boarder Module S1D - ~30 disconnected pads Module S4E - ~100 disconnected pads Module S8G - ~30 disconnected pads W.Wang_RD51 mini week

  12. Evt with uncollimated source(each cluster is an X-ray photon) W.Wang_RD51 mini week

  13. Test Bench EnergyResolution (preliminary) : ~15% rms W.Wang_RD51 mini week

  14. Summary • Successful test of 6 modules simultaneouslywith full integration of the electronics flat behind the panels. The analysis work is on-going. • Test bench is on-going to study the modules one by one: energy resolution, calibration, cross-talk… • Next step: 7 modules high quality testat the end of January 2013 W.Wang_RD51 mini week

  15. Thank you! W.Wang_RD51 mini week

More Related