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Hi Zisis,<br>
<br>
If I understand your proposal (subject to verifying the Kuraray
measurements), you suggest to use all of shipment 28. Shipment 29
will be remade by Kuraray and we will await its arrival. I concur
with this plan.<br>
<br>
Cheers, Elton.<br>
<pre class="moz-signature" cols="72">Elton Smith
Jefferson Lab MS 12H5
12000 Jefferson Ave
Suite #16
Newport News, VA 23606
(757) 269-7625
(757) 269-6331 fax </pre>
<br>
On 9/8/11 12:42 PM, Zisis Papandreou wrote:
<blockquote
cite="mid:8287FCE8-C677-4264-B09C-2872A166AA56@uregina.ca"
type="cite">
<pre wrap="">Hi gents:
I made three plots from the Kuraray data, in two files: DyeCloserLook.pdf and AttenLenComparison.pdf.
Plot 1: The dye number is shown on the top axis and M6BUK is the one the Japanese flagged and asked to remake Shipment 29. The error bars are the StDev of the AttenLen data. The numbers each point represent how many Lots were included. Nominally, each shipment has between 21-23 Lots. I split shipment 28 into two, with 10 and 11 Lots, respectively, according to 'acceptable' and 'non-acceptable' dyes. Shipment 28 (first, good half) has average attenlen of 403cm and Shipment 28.5 (last, bad half) has 364 cm.
Plot 2: this is the Cumulative Kuraray plot on all data. The yellow triangles represent the attenuation length. Observe that Shipment 29 has an average of 338cm, certainly above the contract criteria of 300cm, yet the Japanese want to remake it.
Plot 3: Using the Shipment 28.5 average of 364cm as a baseline (0 line in the plot), I show the difference (surplus or deficit) between the average attenuation lengths from each shipment and 364cm. We see that two other shipments (15 and 22) are on par with Shipment 28.5 whereas Shipment 16 is lower and 17, 18 and 25 barely higher. All those shipments were deemed acceptable and used in the builds. (The Shipment 28 point is the full shipment status -- in Plot 1 I broke it down into its two components based on dye).
We plan to focus on fibre measurements to confirm the Japanese data. If we do so confirm, I propose we use the latter 1/2 of Shipment 28 together with the former 1/2 to finish Modules 47 and 48 and have no big disruptions in the build. We'll use the 28.5 fibres in the outer layers.
Comments, questions...?
Cheers, Zisis...
</pre>
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<pre wrap="">
---
Prof. Zisis Papandreou, Ph.D., P.Phys.
Department of Physics | tel.: (306) 585-5379
University of Regina | fax.: (306) 585-5659
Regina, SK S4S 0A2 | email: <a class="moz-txt-link-abbreviated" href="mailto:zisis@uregina.ca">zisis@uregina.ca</a>
Web: <a class="moz-txt-link-freetext" href="http://web.me.com/zisis/professional/">http://web.me.com/zisis/professional/</a>
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