[Dsg-rich] RICH survey data

[Kelly Tremblay]

Hello Marco,
Thanks for clearing this up. I'm back on accelerator business this morning but may have time this afternoon to get something out to you. The picture helps. Did the crew actually have the coordinates for the pointing device to the mirrors given to them. There is a coordinate frame listed in the file as being the rich detector. It is 10 millimeters from the 'Bottom' fiducial point. Is this the reference you wish everything to be made to. I've got the 3 fiducial coordinates in an 'as-found' operating coordinate system, relative to the 12GeV target. That is how I was going to report the points and also the mirror points. I can also transform the mirror geometry to the 'as-found' angles.
I also have all the graphic / cad data from our surveys. 
It would be good to meet up next week if you have the time. I've got interviews next week but should be able to make time. Let me know.
All the best,
Kelly

----- On May 16, 2018, at 10:08 AM, Marco Mirazita Marco.Mirazita at lnf.infn.it wrote:

Dear Kelly,
for the survey made in the Hall B after the installation, we need the 
coordinates of the surveyed points on the RICH in the CLAS12 reference 
frame.

Then there is the survey made in the clean room. From this, we need 
again the coordinates of the points on the RICH and of the points 
measured on the mirrors. The reference frame of these measurements was 
located on a point in front of the RICH as shown in the attached figure, 
but it would be very helpful if you could translate these coordinates in 
the CLAS12 reference frame.
I remember that your software extracted also the tilt angles of the 
mirrors, this would be another useful information to have.

Any data format would be fine for us, text, excel, or similar, but if 
possible we would like to have also the CAD files of the measurements.

Please let me know if you need any other information. I would be at JLab 
next week, so if necessary we could meet shortly.

Best regards,
Marco



Il 2018-05-15 22:00 Tyler Lemon ha scritto:
> Hello Marco Mirazita,
> 
> Kelly Tremblay of Survey Group (he is cc'd) has been working on the
> RICH survey data and has questions on what is needed in the survey
> report. His email is below in blue.
> 
> He needs to know whether you all require the points or the plane
> rotational data from the survey in the hall relative to the 12GeV
> target center.
> 
> Best regards,
> 
> Tyler
> 
> FROM: "Kelly Tremblay" <tremblay at jlab.org>
> TO: "Tyler Lemon" <tlemon at jlab.org>
> SENT: Tuesday, May 15, 2018 3:40:46 PM
> SUBJECT: Re: RICH survey data
> 
> Hi Tyler,
> I need some clarification about what you are looking for in a report.
> The alignment crew located the planes with the detector. I've
> translated these mirrors to the as located in the hall, relative to
> the 12GeV Hall B target center. I can either give you the points or
> the plane rotational data. Not sure what the INFN folks require.
> Thanks,
> Kelly
> 
> 
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