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Re: Comments on slides
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
>
>
> /--------------------------------
> / Yves Van Haarlem
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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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