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GATING GEM. GDD Meeting December the 17 th Gabriele Croci. Experimental Setup. 8.9 keV Copper X-Rays. Drift. A. 13 mm. E D. Preamp GEM. B. 2 mm. E T1. Gating GEM. C. 3 mm. E T2. Bottom GEM 1. 2 mm. E T3. Bottom GEM 2. 2 mm. E I. No PreAMP GEM Measurements. C. B. Pedestal.

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Gating gem

GATING GEM

GDD Meeting December the 17th

Gabriele Croci


Experimental setup
Experimental Setup

8.9 keV Copper X-Rays

Drift

A

13 mm

ED

Preamp GEM

B

2 mm

ET1

Gating GEM

C

3 mm

ET2

Bottom GEM 1

2 mm

ET3

Bottom GEM 2

2 mm

EI




Preamp gem spectrum
PreAmp GEM Spectrum

A

B

C

Pedestal




E t1 scans
ET1 Scans

ΔVPreGEM = 400 V

ΔVPreGEM = 380 V

ΔVPreGEM = 420 V


E d scans
ED Scans

ΔVPreGEM = 400 V

ΔVPreGEM = 380 V

ΔVPreGEM = 420 V


Current measurements setup
Current Measurements Setup

Drift

8.9 KeV X-Ray

13 mm

ED

Preamp GEM

2 mm

ET1

Gating GEM

VGGb = -100

3 mm

ET2 = 0

Bottom GEM 1

2 mm

ET3 = 0

Bottom GEM 2

2 mm

EI = 0




E d scans1
Ed Scans


E t1 scans1
ET1 Scans