[Dsg-rich] RICH survey data

[Marco Mirazita]

Hello Kelly,
I agree, it's better we meet in person next week. I will contact you at 
my arrival at JLab to set up the meeting.
Best regards,
Marco


Il 2018-05-16 16:43 Kelly Tremblay ha scritto:
> 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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