thgem: prototype device

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session - RICH session 1 THGEM: THGEM: PROTOTYPE DEVICE PROTOTYPE DEVICE Design of the first prototype Production of THGEM foils The prototype assembly Tests in the laboratory Test in the COMPASS beam Fulvio Tessarotto

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THGEM: PROTOTYPE DEVICE. Fulvio Tessarotto. Design of the first prototype Production of THGEM foils The prototype assembly Tests in the laboratory Test in the COMPASS beam. Drawings of the first prototype. We started from the design of the prototype structure and - PowerPoint PPT Presentation

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Page 1: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 11

THGEM:THGEM: PROTOTYPE PROTOTYPE DEVICEDEVICE

Design of the first prototype

Production of THGEM foils

The prototype assembly

Tests in the laboratory

Test in the COMPASS beam

Fulvio Tessarotto

Page 2: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 22

Drawings of the first Drawings of the first prototypeprototype

We started from the design of the prototype structure andthe mechanics of its test box

The prototype test box contains:a quartz radiator

a wire cathode framethe THGEMs and spacer framesa segmented collection anode pcb

We hope to perform the test of the first prototype using muons of the COMPASS beam or halo and a quartz radiator to generate Cherenkov photons.

Page 3: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 33

THE PROTOTYPE THE PROTOTYPE STRUCTURE STRUCTURE

wireswires

11stst THGEM (CsI THGEM (CsI here,external here,external face)face)

22ndnd THGEM THGEM

collection anodecollection anode

apertures for gas apertures for gas circulationcirculation

read-outread-out

Quartz radiator(truncated cone)

Page 4: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 44

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 55

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 66

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 77

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 88

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 99

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1010

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1111

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1212

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1313

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1414

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Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1515

Photon DetectorsPhoton Detectors

Page 16: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1616

THGEM production for the THGEM production for the prototypeprototype

following the preliminary indications coming from the laboratory tests, the geometrical parameters of our first

THGEM prototype have been defined:

Thickness: 0.20 mm

Holes diameter: 0.20 mm

Pitch: 0.50 mm

Material: fiberglass + 17 μm thick Cu

Active area: 10 cm х 10 cm

Page 17: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1717

Raw material

CNC drilling

Electrodes etching

Rim if needed

Resist covering

THGEM production process

Page 18: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1818

10 cm x 10 cm THGEM

Page 19: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 1919

THGEM: HV connections

Page 20: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2020

THGEM: edge and holes

Page 21: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2121

THGEM: edge and holes

Page 22: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2222

THGEM: edge and holes

Page 23: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2323

THGEM: holes

0.2 mm

0.5 mm

Page 24: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2424

Anode with 256 padsAnode with 256 pads

Page 25: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2525

Anode pcb, connector Anode pcb, connector sideside

Page 26: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2626

Anode pcb, glued on Anode pcb, glued on Al frameAl frame

Page 27: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2727

Anode pcb, glued on Al frame, with smd

connectors

Page 28: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2828

Read-out for the initial Read-out for the initial tests:tests:

as for the MAPMTsas for the MAPMTs

Replacing the cover with Replacing the cover with the quartz radiator with a the quartz radiator with a mylar/aclar foil: test the mylar/aclar foil: test the device as ionizing particle device as ionizing particle detectordetector

Initial test configurationInitial test configuration

Page 29: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 2929

PLANNINGPLANNING

Lab tests, no CsILab tests, no CsI Beam tests, no CsIBeam tests, no CsI

Trigger prepared in 888, at the end of the hall, to trigger on halo (or beam) mu’s

If possible, apply CsI on the If possible, apply CsI on the external surface of the first external surface of the first THGEM THGEM

Test with quartz radiator !Test with quartz radiator !

Page 30: THGEM: PROTOTYPE DEVICE

Fulvio TESSAROTTO CERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH sessionCERN, 14/09/2007 - COMPASS Collaboration Meeting - RICH session 3030

A. Braem CsI A. Braem CsI evaporation plantevaporation plant