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Phone Meeting, NIKHEF – 20.02.20081 SiTPC status in Saclay David Attié P. Colas; X. Coppolani; E. Delagnes; J. Derre; E. Ferrer.

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Presentation on theme: "Phone Meeting, NIKHEF – 20.02.20081 SiTPC status in Saclay David Attié P. Colas; X. Coppolani; E. Delagnes; J. Derre; E. Ferrer."— Presentation transcript:

1 Phone Meeting, NIKHEF – SiTPC status in Saclay David Attié P. Colas; X. Coppolani; E. Delagnes; J. Derre; E. Ferrer Ribas; Y. Giomataris; A. Giganon; M. Riallot SiTPC Phone Meeting, NIKHEF – 20 February 2008

2 Phone Meeting, NIKHEF – News Second Micro-TPC available soon TimePix works with USB1.1 readout (but Clock < 7 MHz) First measurements in Helium – 55 Fe source – 90 Sr source Preliminary data analysis The TimePix panel with a matrix of 2x4 chips have been designed and will be delivered next Tuesday official release planned for March 17 th EUDET SC meeting The Micromegas panel designed at Saclay fits to the endplate

3 Phone Meeting, NIKHEF – Micro-TPC prototype A second detector will be available next week, for the community? But, we need an extra readout system (MUROS or USB1.2)

4 Phone Meeting, NIKHEF – Melted bonding wires After reparation, the first chip (mesh tested in air up to 650 V) did not recover and the second works fine The first one appears after an all-night standing sparking state The second, probably during a powering down

5 Phone Meeting, NIKHEF – Micro-TPC TimePix/Micromegas : mode Time Puce Timepix + SiProt 20 μm + Micromegas 55 Fe Ar/Iso (95:5) Mode Time z ~ 40 mm V mesh = -340 V

6 Phone Meeting, NIKHEF – Micro-TPC TimePix/Micromegas : mode Time Puce Timepix + SiProt 20 μm + Micromegas 90 Sr Ar/Iso (95:5) Mode Time z ~ 40 mm V mesh = -340 V

7 Phone Meeting, NIKHEF – Micro-TPC TimePix/Micromegas : mode Time Puce Timepix + SiProt 20 μm + Micromegas 90 Sr Ar He Mode Time z ~ 40 mm V mesh = -340 V

8 Phone Meeting, NIKHEF – Micro-TPC TimePix/Micromegas : mode Time Puce Timepix + SiProt 20 μm + Micromegas 90 Sr He/Iso (80:20) Mode Time z ~ 40 mm V mesh = -430 V

9 Phone Meeting, NIKHEF – Micro-TPC TimePix/Micromegas : mode Time Puce Timepix + SiProt 20 μm + Micromegas 55 Fe He/Iso (80:20) Mode Time z ~ 60 mm V mesh = -430 V

10 Phone Meeting, NIKHEF – sxsx sysy stst Fitted with a gaussian x y t Fitted with f t Ar/Iso (95:5) E drift ~500 V/cm Example: Drift velocity measurement using TimePix Example: σ r = cm σ t = us V drift = 2.98 cm/μs Simulation GARFIELD : E drift (500 V/cm) ~ 3.2 cm/μs Histo x σ x Histo y σ y Histo time σ t

11 Phone Meeting, NIKHEF – Drift velocity measurement using TimePix Argon/Isobutane (95:5) Clock = 67 Mhz Clock = 40 Mhz

12 Phone Meeting, NIKHEF – Multiplicity = 6 Pixel cluster multiplicities Multiplicity = 5 Multiplicity = 4 Multiplicity = 3 Multiplicity = 2 Multiplicity = 1

13 Phone Meeting, NIKHEF – Histogram of the pixel cluster multiplicities Pixel cluster multiplicity Example: Mean ~ 2.5

14 Phone Meeting, NIKHEF – Histogram of all events for 55 Fe

15 Phone Meeting, NIKHEF – TimePix panel

16 Phone Meeting, NIKHEF – TimePix panel Bottom side

17 Phone Meeting, NIKHEF – TimePix panel Top side

18 Phone Meeting, NIKHEF – TimePix panel Bottom side

19 Phone Meeting, NIKHEF – TimePix panel Top side

20 Phone Meeting, NIKHEF – TimePix panel Top side

21 Phone Meeting, NIKHEF – TimePix panel Bottom side

22 Phone Meeting, NIKHEF – Micromegas panel Saclay Cornell

23 Phone Meeting, NIKHEF – Micromegas panel Saclay Cornell


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