"Open Rings" Endcap Layout

(Previously known by a number of different names e.g. "concentric diskettes".)

Motivation and Description

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

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

(J.Pater) using spreadsheet found below:

Using the same module dimensions given above, assuming the same active coverage as the quad-hex-hex LoI -layout disks (dimensions are in mm):

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
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
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):

Jo's spreadsheet for calculating numbers of rings: PixelDiskDimensions.xlsx

6-Feb-2014: Peter Sutcliffe's step files for the 3 ring types: np49-04-17.stp, np49-04-19.stp, np49-04-21.stp

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
pdf	2013-06-26_Burdin_Rings.pdf	r1	manage	328.5 K	2013-09-09 - 12:27	JoleenPater	Sergey's initial talk introducing the 'concentric diskettes' layout
pdf	2013-08-27_Jones_Lpool_Status.pdf	r1	manage	1265.2 K	2013-09-09 - 12:28	JoleenPater	Update from Liverpool, last half concerns the 'concentric diskettes' layout
png	2013-11-OpenRings3D-simple.png	r1	manage	185.3 K	2014-02-06 - 15:03	JoleenPater
xlsx	PixelDiskDimensions.xlsx	r1	manage	21.8 K	2013-09-01 - 11:21	JoleenPater
stp	np49-04-17.stp	r1	manage	516.8 K	2014-02-06 - 14:58	JoleenPater
stp	np49-04-19.stp	r1	manage	404.0 K	2014-02-06 - 14:58	JoleenPater
stp	np49-04-21.stp	r1	manage	367.9 K	2014-02-06 - 14:59	JoleenPater

Topic revision: r16 - 2014-06-16 - JoleenPater