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[Zhenyu Ye <yezhenyu2003 AT gmail.com>]

The inner and outer sensors were mounted and wire-bonded on FST03. A comment 
from the technicians "bias bonds went in but noticed some deflection of the 
sensor”, which I think is related to the flatness of the hybrid surface.

We have been taking cosmic data with FST Inner sensor and IST staves since 
Tuesday afternoon at UIC. Xu is taking STAR shifts but has managed to find 
time to analyze the data but so far so good. Will send out results later.

Zhenyu

> On Jul 2, 2020, at 7:45 PM, Yi Yang <yiyang AT ncku.edu.tw> wrote:
> 
> Hi Zhenyu,
> 
> Thanks a lot for the feedback, we will discuss the possible reason for this 
> shifting. 
> My first guess is the mismatch of the CAD files. We will get it back to you 
> later. 
> 
> Cheers,
> Yi
> 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> Yi Yang, Associate Professor 
> Department of Physics 
> National Cheng Kung University 
> Tainan, 701 Taiwan 
> E-Mail: yiyang AT ncku.edu.tw 
> Tel: +886-6-2757575 ext.65237 
> Fax: +886-6-2747995
> Group Web: 
> https://urldefense.com/v3/__http://phys.ncku.edu.tw/*yiyang__;fg!!P4SdNyxKAPE!XXw41843jdZ_SJh6LgtKNd0CB3nnMZGPftwC4s_ENf3ONF01oRNicwlP_SSCVZ8dXgIM-AA$
>   
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> 
> 
> On Thu, Jul 2, 2020 at 11:50 PM Zhenyu Ye <yezhenyu2003 AT gmail.com> wrote:
> 
> > On Jul 2, 2020, at 2:40 AM, Yi Yang <yiyang AT ncku.edu.tw> wrote:
> > 
> > Hi Zhenyu,
> > 
> > It is good news. Thanks for the update.
> > 
> > Could you please provide more details on the comments from the 
> > technician, like the placement is off in which direction, what are the 
> > reference points for these 500 and 200 microns (they are very different 
> > from our measurements). 
> > "The inner chip placement was off .500mm so I needed to reposition. The 
> > outer placement was off .200mm”. 
> 
> "They were inboard toward the sensor area . I needed to slide the chips 
> back  or outward. Michelle mention adhesion under some pads was not so good 
> and created some issue but she got all in adjusting the powers.”
> 
> > Yi, Han-Sheng, Pu-Kai, do you have the measurement results on the 
> > relative x and y positions of the hybrids w.r.t. mounting holes, and 
> > compare them with design? 
> > 
> > ==> We actually discussed this in our internal meeting, but so far we 
> > don't know how to measure the relative x and y positions. Pu-Kai and 
> > Han-Sheng are still working on this. But we didn't measure this for 
> > FST003.  (Pu-Kai and Han-Sheng, please correct me if I said something 
> > stupid...) 
> > 
> > Cheers,
> > Yi
> > 
> > +++++++++++++++++++++++++++++++++++++++++++++++++++
> > Yi Yang, Associate Professor 
> > Department of Physics 
> > National Cheng Kung University 
> > Tainan, 701 Taiwan 
> > E-Mail: yiyang AT ncku.edu.tw 
> > Tel: +886-6-2757575 ext.65237 
> > Fax: +886-6-2747995
> > Group Web: 
> > https://urldefense.com/v3/__http://phys.ncku.edu.tw/*yiyang__;fg!!P4SdNyxKAPE!XXw41843jdZ_SJh6LgtKNd0CB3nnMZGPftwC4s_ENf3ONF01oRNicwlP_SSCVZ8dXgIM-AA$
> >   
> > +++++++++++++++++++++++++++++++++++++++++++++++++++
> > 
> > 
> > On Thu, Jul 2, 2020 at 7:53 AM Zhenyu Ye <yezhenyu2003 AT gmail.com> wrote:
> > All the 8 APV chips were mounted and showed normal behavior in readout. I 
> > have instructed the Fermilab technicians to mount the Silicon sensors. 
> > 
> > One comment from the technician "The inner chip placement was off .500mm 
> > so I needed to reposition. The outer placement was off .200mm”. 
> > 
> > Yi, Han-Sheng, Pu-Kai, do you have the measurement results on the 
> > relative x and y positions of the hybrids w.r.t. mounting holes, and 
> > compare them with design? 
> > 
> > Best, 
> > Zhenyu 
> > 
> > > On Jun 19, 2020, at 7:18 AM, Yi Yang <yiyang AT ncku.edu.tw> wrote:
> > > 
> > > Dear all,
> > > 
> > > We've finished the second prototype and shipped it to Fermilab directly 
> > > per Zhenyu's request today. The DHL tracking number is: 4658055916  
> > > (https://urldefense.com/v3/__https://www.dhl.com/en/express/tracking.html?AWB=4658055916&brand=DHL__;!!P4SdNyxKAPE!XXw41843jdZ_SJh6LgtKNd0CB3nnMZGPftwC4s_ENf3ONF01oRNicwlP_SSCVZ8dh6CO4qA$
> > >  ) 
> > > 
> > > Please find some details/pictures of this prototype here:
> > > 20200619_FST_Second_Prototype_YiYang.pdf
> > > 
> > > Overall it looks pretty good (much better than the first batch). 
> > > Thank you very much for being patient with us. 
> > > 
> > > Cheers,
> > > Yi
> > > 
> > > +++++++++++++++++++++++++++++++++++++++++++++++++++
> > > Yi Yang, Associate Professor 
> > > Department of Physics 
> > > National Cheng Kung University 
> > > Tainan, 701 Taiwan 
> > > E-Mail: yiyang AT ncku.edu.tw 
> > > Tel: +886-6-2757575 ext.65237 
> > > Fax: +886-6-2747995
> > > Group Web: 
> > > https://urldefense.com/v3/__http://phys.ncku.edu.tw/*yiyang__;fg!!P4SdNyxKAPE!XXw41843jdZ_SJh6LgtKNd0CB3nnMZGPftwC4s_ENf3ONF01oRNicwlP_SSCVZ8dXgIM-AA$
> > >   
> > > +++++++++++++++++++++++++++++++++++++++++++++++++++
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> 
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