Re: Comments on slides

[Tim Whitlatch <whitey@jlab.org>]

Hi Yves,

That does sound reasonable. Old habits die hard.

Tim

Yves Van Haarlem wrote:
> Hi,
>
> It is probably a bit late but by going over your talk, Tim, I noticed 
> the use of SI units (kg,cm) and English units (lbs., inch) together. 
> Sometimes you give a conversion other times not. In general, should we 
> not decide to use one kind of units (SI)?
>
> Cheers,
>     Yves
>
>
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> On Tue, 25 Mar 2008, Tim Whitlatch wrote:
>
>> Dear Dan,
>>
>> Thank you very much for taking a close look at all my slides. I have 
>> addressed many of your comments and have reposted.
>>
>> I do not intend to show any slides on the cable attach inside the 
>> BCAL. Chucks picture is a cartoon for now. I did plan on mentioning 
>> some sort of attachment on the maintenance slide.
>>
>> Also, I do not plan on getting into details on the magnetic field 
>> quench during the talk. I will mention we are looking into it and 
>> have some preliminary calculations.
>>
>> The lower figure on slide 24 is a section cut from the area circled.
>>
>> Thanks again.
>>
>> Tim
>>
>> Daniel S. Carman wrote:
>>> Tim,
>>>
>>> Things are looking better and better in your talk.  I have gone
>>> over the slides and my comments are below.  Let me know if you
>>> have any questions.
>>>
>>>
>>>                 Regards,
>>>
>>>                     Daniel
>>>
>>> **********************************************************************
>>> pp.8 : Meaning of Phi=119.5cm in upper-left corner?
>>>
>>> pp.10 : Make figure slightly smaller to separate it from bullets.  This
>>>         is a problem on several slides in your talk.  Note that 20 
>>> micron
>>>         is wire diameter.
>>>
>>> pp.12 : Labels overlap figure.  Make it slightly smaller to separate
>>>         from bullets.
>>>
>>> pp.14 : For the text in the lower right, make it span 2 lines to avoid
>>>         overlap with the slide number.
>>>
>>> pp.16 : eliminate punctuation on 4th bullet for consistency.
>>>
>>> Note: leaks are not the real problem (for a non-flammable gas mixture).
>>>       The issue is contamination of the gas from water and oxygen.  In
>>>       general, if things can get from the inside to the outside, they
>>>       can surely get from the outside to the inside!
>>>
>>> pp.19 : Missing ")" on 2nd bullet.  Note that FDC assembled as single
>>>         structure for installation.  Note that 118 cm diameter is too
>>>         small.  This is the O.D. of the frame and does not account for
>>>         the cabling.
>>>
>>> Note: You have not mentioned anything about the FDC cable support
>>>       inside the solenoid (outside the BCAL).  Is the current plan
>>>       too premature/underdeveloped for at least a mention?  Chuck
>>>       has a picture that I included in the FDC TDR.
>>>
>>> pp.20 : On 3rd bullet, use "o-ring grooves".
>>>
>>> pp.21 : The wording "structural skin" is unneccesarily repeated 
>>> repeated.
>>>
>>> pp.22 : Again, 20 microns and 80 microns are wire diameters.  Use the
>>>         term "sense wire" and not "signal wire".  Also note that the
>>>         tension choices for the W and CuBe wire are chosen to match the
>>>         gravitational sag.
>>>
>>> pp.24 : Fig. labels overlap bullets.  Also the lower figure does not
>>>         make sense to me.  It looks like we have square frames.  It
>>>         might be worth mentioning that tubes/skins will be 
>>> light-weight.
>>>         Skins will not allow for current path in case of a magnet
>>>         quench.
>>>
>>> pp.26 : The point of this slide is not clear.  This model is being made
>>>         and calculations carried out to determine the hole locations 
>>> and
>>>         sizes to ensure a uniform gas mixture and (semi-) rapid gas
>>>         volume exchange.  It is crucial to have no pockets of stagnant
>>>         gas.  Also note that the holes in the cathodes rotate from
>>>         cathode layer to cathode layer.
>>>
>>> pp.27 : Labels overlap bullets.
>>>
>>> pp.28 : Move slide contents further below the title.
>>>
>>> pp.29 : Note that wire frame boards are only partially stuffed prior to
>>>         wire stringing.  Additional components (including the 
>>> connectors)
>>>         are added after stringing.
>>>
>>> pp.32 : FDC installed from the upstream end should be stated 
>>> explicitly.
>>>
>>> pp.33 : All bullet for why we extract from downstream end for 
>>> servicing.
>>>         The point is not to disturb the CDC, target, start counter,
>>>         beamline, etc. (or their alignment).  Also note that the first
>>>         step in downstream extraction is to move the downstream 
>>> carriage
>>>         downstream and then to install the service platform.
>>>
>>> pp.34 : Spurious "[" on first bullet.  Also I do not know what you are
>>>         saying in the 2nd bullet.
>>>
>>> pp.36 : Meaning of 2nd bullet unclear.  Also statement on minimizing
>>>         material in the active area is unclear.  The bars themselves
>>>         are in the active area.
>>>
>>> pp.37 : On 3rd bullet, use 252 cm**2 (i.e. superscript) active area.
>>>         On 4th bullet, use "6 cm" not "6cm".
>>>         On 5th bullet, use "readout" not "read".
>>>         On 6th bullet, is hole 12 cm**2?
>>>
>>> pp.38 : Fig. labels overlap words.
>>>
>>> pp.40 : Missing your footer here.  Also you have not mentioned the
>>>         movement of the downstream carriage.
>>>
>>> pp.41 : Slide is incomplete.  State what has been done to address this
>>>         issue in the FDC, CDC, and TOF.  Mention Al endplate for CDC.
>>>         Ref. Elton's GlueX note and give some relevant scale for the
>>>         forces involved.  In other words, beef this slide up a bit.
>>>
>>> pp.43 : Note that this is an example for one subsystem (the FDC) and
>>>         that this hazard analysis has been done for all Hall D/GlueX
>>>         subsystems and the Hall itself.
>>>
>>> pp.44 : On 3rd bullet, I would say "Some details still need to be 
>>> ironed
>>>         out".
>>>         On 5th bullet, why not say "personnel and equipment safety".
>>>         We are designed the detector and all construction/installation
>>>         procedures certainly to protect the workers, but a big part of
>>>         the design is also to protect the system (our investment) in
>>>         case of failures or problems.
>>> **********************************************************************
>>> **********************************************************************
>>> *                                                                    *
>>> * Dr. Daniel S. Carman                   e-mail : carman@jlab.org    *
>>> * Staff Scientist                        office : (757)-269-5586     *
>>> * Jefferson Laboratory                   web: www.jlab.org/~carman   *
>>> *                                                                    *
>>> **********************************************************************
>>>
>>>
>>>
>>>
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