Difference: PixelEndcapsInTheLoILayout (10 vs. 11)

Revision 112013-09-09 - JoleenPater

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Pixel Endcaps in the LoI (Cartigny) Layout

The drawings below show 3 possible types of pixel endcap disks in the LoI, or "Cartigny" layout of the upgraded inner tracker. The original Cartigny layout called for six disks, at the z positions shown in the table below, with outer active radius of 315mm and inner active radii of 135mm (disks 1-4), 175mm (disk5) and 215mm (disk 6). These specifications can not be met exactly with the current module designs and assuming the simplest possible disk layout (shown below), where all modules are fixed directly to the front and back surfaces of a flat disk.

Line: 19 to 19

The pixel disk backup document for the Phase-II Letter of Intent can be found here: http://cds.cern.ch/record/1515010/files/ATL-UPGRADE-PUB-2013-004.pdf

Sergey Burdin's "Concentric Diskettes" Endcap Layout

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Caculation J.Pater using spreadsheet found below:

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A couple of talks showing the basic idea: 2013-06-26_Burdin_Rings.pdf

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Using the same module dimensions given above, assuming the same active coverage as the quad-hex-hex LoI-layout disks:

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and a later update with a more sophisticated layout: 2013-08-27_Jones_Lpool_Status.pdf.

Caculation of diskette sizes (J.Pater) using spreadsheet found below:

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Using the same module dimensions given above, assuming the same active coverage as the quad-hex-hex LoI-layout disks:

Physical outer radius of ring 2 modules: centres not corners - corners will extend further

315.2

Active outer radius of ring 2 modules: centres not corners

315.0

same as LoI

Active inner radius of ring 2 modules: centres not corners

274.6

Physical inner radius of ring 2 modules: centres not corners

274.4

Physical outer radius of ring 1 modules: centres not corners - corners will extend further

253.0

Active outer radius of ring 1 modules: centres not corners

252.7

active CENTRE of ring 2 modules

232.5

Active inner radius of ring 1 modules: centres not corners

212.3

Physical inner radius of ring 1 modules: centres not corners

212.1

Physical outer radius of ring 0 modules: centres not corners - corners will extend further

190.7

Active outer radius of ring 0 modules: centres not corners

190.5

Active inner radius of ring 0 modules: centres not corners

150.1

same as LoI

Physical inner radius of ring 0 modules: centres not corners

149.9

Number of modules per ring, rounded up to be divisible by 4 (front/back, left/right clamshell):

Ring 2:

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META FILEATTACHMENT	attachment="PrototypePipes.jpg" attr="" comment="single-row half-disk cooling pipe" date="1361461014" name="PrototypePipes.jpg" path="PrototypePipes.jpg" size="771748" stream="PrototypePipes.jpg" tmpFilename="/usr/tmp/CGItemp28643" user="JoleenPater" version="1"
META FILEATTACHMENT	attachment="MP12003_00_A2.jpg" attr="" comment="single-row half-disk cooling pipe" date="1361461245" name="MP12003_00_A2.jpg" path="MP12003_00 A2.jpg" size="271673" stream="MP12003_00 A2.jpg" tmpFilename="/usr/tmp/CGItemp28517" user="JoleenPater" version="1"
META FILEATTACHMENT	attachment="PixelDiskDimensions.xlsx" attr="h" comment="" date="1378034470" name="PixelDiskDimensions.xlsx" path="PixelDiskDimensions.xlsx" size="22306" stream="PixelDiskDimensions.xlsx" tmpFilename="/usr/tmp/CGItemp18716" user="JoleenPater" version="1"

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META FILEATTACHMENT	attachment="2013-06-26_Burdin_Rings.pdf" attr="" comment="Sergey's initial talk introducing the 'concentric diskettes' layout" date="1378729666" name="2013-06-26_Burdin_Rings.pdf" path="2013-06-26_Burdin_Rings.pdf" size="336346" stream="2013-06-26_Burdin_Rings.pdf" tmpFilename="/usr/tmp/CGItemp18825" user="JoleenPater" version="1"
META FILEATTACHMENT	attachment="2013-08-27_Jones_Lpool_Status.pdf" attr="" comment="Update from Liverpool, last half concerns the 'concentric diskettes' layout" date="1378729690" name="2013-08-27_Jones_Lpool_Status.pdf" path="2013-08-27_Jones_Lpool_Status.pdf" size="1295564" stream="2013-08-27_Jones_Lpool_Status.pdf" tmpFilename="/usr/tmp/CGItemp18893" user="JoleenPater" version="1"

META TOPICMOVED	by="JoleenPater" date="1376430153" from="ATLAS/PUUKA.WP2PixelDiskMechanics" to="ATLAS/PUUKA.EndcapLayoutAndEngineeringDesign"

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