1. Possible types of module Si/W CALORIMETER CONCEPT Si/W CALORIMETER CONCEPT G.Bashindzhagyan Moscow State University June 2002 Internal structure (not in scale). Spacers. ~500 mm long; material: steel(?), titanium (?). Stainless steel plate ~10 mm Tungsten plates 1.4 - 4.2 mm Spacers glued to W 50 mm 2.5 mm ~0.2 mm ~0.3 mm ~3 mm Stainless steel plate The Module Elektronics …….. ~1 m Si/W layers ~1 m 1. The Mechanical Structure.

2. 2. Detector Board. Top View. Length: ~50 cm; Width: 5/6/10 cm; Pixel size: 1-2 cm 2. Cross section (not in scale). Detector Board Elastic foam band 0.2 mm 0.1 mm Detector Board G10 (?) Pixeled Si detectors ~2.5 mm Kapton cable Silicon detectors Gold strip-lines on the kapton cable Si/W CALORIMETER CONCEPT Si/W CALORIMETER CONCEPT G.Bashindzhagyan Moscow State University June 2002

3. Kapton thickness ~20 µm; Gold strip-line thickness ~10 µm; Gold strip-lines width ~100 µm; 5 (6;10) cm The holes in the kapton - The Detector Board (G10 ?); - Gold strip-line on the kapton; - Kapton layer; - Silicon sensors; - Elastic foam band. The strip-line bonding: only one contact; no additional thickness. Compare to regular wire bonding: three contacts; a protection is required. ~ 2 mm Kapton cable Gold strip-lines 3. Kapton Cable Point of bonding Aluminum on the Si-detector Silicon detector Kapton Points of bonding Silicon detector Gold strip-line Aluminum wire  25 µm Detector Board iside the Module. Cross section. ~2.5 mm To the Module Electronics Tungsten Elastic foam band Detector Board Si-detector Kapton cable with gold strip-lines Tungsten Si/W CALORIMETER CONCEPT Si/W CALORIMETER CONCEPT G.Bashindzhagyan Moscow State University June 2002 Top View.

4. 4. Silicon Detector. Si/W CALORIMETER CONCEPT Si/W CALORIMETER CONCEPT G.Bashindzhagyan Moscow State University June 2002 First option: One detector 10  10cm 2 size. Second Option: Four detectors 5  5cm 2 size. A coast per 1 cm 2 can be essentially less for the second option. Possible types of Si-detectors: 6” Si-Wafer ~10 cm Detector size: 5  5 cm 2 ; Pixel size: 1.25  1.25 cm 2 ; Pixel area: 1.25  1.25=1.56 cm 2 ; Number of pixels: 16. Detector size: 5  5 cm 2 ; Strip width: 0.31cm; Strip area: 5  0.31=1.56 cm 2 ; Number of strips: 16. Strips of both detectors connected to one strip-line on the kapton cable forming one 10cm long strip. Each detector size: 5  5 cm 2 ; Area of two connected strips: 1.55 cm 2 ; Number of strips: 32. Pixel detector. Strip detector (type 1). Strip detector (type 2). Detector #1 Detector #2