[Solid_ec] [EXTERNAL] Re: SoLID ECal meeting 8:00am EDT Wednesday October 6th

[Reimer, Paul E.]

Hello,


During this week's meeting, there was a discussion of connecting the wave length shifting fibers with clear fibers of a different diameter.  I think that It was said that a many-to-many system of just bunching lost about 35% of the light (I probably am not remembering this number correctly). The one-to-one option, on the other hand, seems difficult to implement.  Below is an idea for a many-to-many system that might not loose as much light.  The key is that it allows the light to spread out and mix between fibers in a small cylindrical light guide.  Thus, for fibers that don't happen to align exactly, not all of the light will be lost, as the cone of light emitted from the fiber will have a chance to expand a bit.  There is still the ratio of fiber areas that you can't get around.


Paul


--
If you receive this e-mail after hours, during a weekend, or on a holiday,
please enjoy your time off and respond during your working hours.

Paul E Reimer               +1-630-252-4037 (Office)
Bldg 203, Physics Division  +1-630-252-3903 (fax)
Argonne National Laboratory +1-630-344-9207 (mobile)
9700 S Cass Ave             reimer at anl.gov<mailto:reimer at anl.gov>
Lemont, IL  60439 USA.      he/his/him

On 10/19/21 19:12, Xiaochao Zheng wrote:
Dear All:

Our next ECal meeting will be 8:00am (US Eastern Daylight Saving time), Wednesday October 20th.  Here is a tentative agenda:

1) Updates from THU (Zhihong)
2) Updates from SDU (if applicable);
3) Support structure update (Paul);
4) JLab beam test discussions;

Bluejean link is below.

Meeting minutes are at (sorry if it's still a bit outdated)
https://hallaweb.jlab.org/experiment/PVDIS/SoLID/EC/meetings/SoLID_EC_Weekly_minutes.html

Thanks,

Xiaochao

Meeting URL
https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_670325644-3Fsrc-3Djoin-5Finfo&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=Y5Q5da_C_roUMK_5_0wUzJdgut1VPIQZWNaAwg3asvU&m=FqX2GyEQEAHLejfu_2y846broZaeKSjCkrAiLciWUMoi6fWroGCNSVGSREHI8RHx&s=wPab01RvEAebi65QJ5_ObMgzyrSI9JsGIL0IOBjIL3c&e= 

Meeting ID
670 325 644

Want to dial in from a phone?

Dial one of the following numbers:
+1.888.240.2560 (US Toll Free)
(see all numbers - https://urldefense.proofpoint.com/v2/url?u=https-3A__www.bluejeans.com_premium-2Dnumbers&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=Y5Q5da_C_roUMK_5_0wUzJdgut1VPIQZWNaAwg3asvU&m=FqX2GyEQEAHLejfu_2y846broZaeKSjCkrAiLciWUMoi6fWroGCNSVGSREHI8RHx&s=g3capA_omUR6e5qUTDETcoyzFYB9Rz5lQs4mwzaT4yo&e= )

Enter the meeting ID and passcode followed by #

Connecting from a room system?
Dial: bjn.vc or 199.48.152.152 and enter your meeting ID & passcode



_______________________________________________
Solid_ec mailing list
Solid_ec at jlab.org<mailto:Solid_ec at jlab.org>
https://mailman.jlab.org/mailman/listinfo/solid_ec

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/solid_ec/attachments/20211020/0a6a55bc/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: fiberCoupling.pdf
Type: application/pdf
Size: 212321 bytes
Desc: fiberCoupling.pdf
URL: <https://mailman.jlab.org/pipermail/solid_ec/attachments/20211020/0a6a55bc/attachment-0001.pdf>