A few things in the final edit to "pretty" up the study

# Spell check

-   find units that are modifiers and add hyphens, e.g. 6 m length → 6-m
    length

-   find extra spaces between words and remove them (e.g. on p. 5-21,
    5-23 etc.)

### Find and Replace

-   search on stage 1 etc. and make them the same: my preference:
    Stage-1 and Stage-2 (caps and hyphens)

-   quad by quadrupole

-   design study or Design Study?

-   references in text to Fig. or Figure or figure

-   smart quotes or dumb quotes -- uniformity

# 

# Reference format: I think

\[1\] reference a is continued on the next line of the reference is
continued on the next line of the reference thus

\[2\] reference b

***looks better than***

\[1\] reference a is continued on the next line of the reference is
continued on the next line of the reference thus

\[2\] reference b

Header/Footer uniformity

Format: Level 3 and 4 headings, uniform space (tabs) between number and
words

Figure/Table uniformity: caps, period at end

**Chapter 1.**

[page i]{.underline}. Acknowledgments. They also **thank ....** (missing
word)

[page 1-2]{.underline} (missing words) The staged approach to the VLHC
**starts with** ...

[page 1-2, 3^rd^ bullet]{.underline} I prefer **advancing the** to
**across** (or that **advances the energy frontier**)

[page 1-5. 3^rd^ par in 1.4.]{.underline} I would drop "begin now to"
since the next par talks about steps that Fermilab is now taking etc.

[page 1-6, last sent]{.underline}. Suggest "..will be challenging and
time-consuming, but ultimately..." (compared to the total project cost I
don't think the public outreach is costly but it will take time)

**Chapter 2.**

[page 2-3, 2^nd^ sent in par. at top of page.]{.underline} Sounds like
Fig. 2.3 shows the LHC depth. Suggest break into 2 sents. "To take
advantage ...much deeper than the Tevatron as shown in Fig. 2.3. The
depth is about the same as the LHC"

[2-3]{.underline}, blank line before par. beginning "The tunnel for
this..."

[Figure 2.4]{.underline}. I think the heavy U-channel around the
low-field magnet needs a comment in the caption or the text. What is it?
Is it part of the support? Is it a magnetic shield? Is it continuous or
broken?

[Figure 2.4.]{.underline} Shows 4 cable trays whereas text says "..there
is only one small cable tray..."

[page 2-4, 2.2. Geology.]{.underline} Suggest adding "The best rock
**for tunneling**, the Galena-Platteville....."

[page 2-4, below the bullets]{.underline}. Suggest adding "The tunnel in
the **Galena-Platteville** dolomite ...."

[page 2-4]{.underline}. Format. Needs a blank line before par "The six
Stage-1 service areas etc.

[page 2-7, table 2.1. Sextupole under notes.]{.underline} It isn't
really "Gradient" How about **Sextupole component in T/m^2^**"

[page 2-8, 2.5.2.1 Tunnel-Resident Systems.]{.underline} Drop "a" "These
electronics are located in radiation-shielded ..."

[page 2-8, 2.5.2.1 Tunnel-Resident Systems.]{.underline} 2 places space
270 m, 10 km

[page 2-11. 2.9. par.1, last sentence]{.underline}, drop "to" and break
into 2 sents. "We have chosen....seems completely adequate from the
point of view...aperture. The lower the injection energy...."

[page 2-11. next par.]{.underline} change "art" to "at"

[page 2-12. 2.10 ES&H Issues. Par 2]{.underline}. there is a duplicate
sent in middle drop "This will also ....but not to"

[page 2-12. 2.10 ES&H Issues. Par 3]{.underline}. last sent reword
"There will be no measurable magnetic field at the surface from either
machine."

[page 2-13, 2.11.3]{.underline} need plurals "Investing in R&D in these
subjects holds promise for...."

[Page 2-13, near bottom of page]{.underline}, add "a" "..would be useful
even if there is not a VLHC."

[Page 2-14, 2.11.3]{.underline} Section numbered wrong. Should be 2.11.4
(Table of Contents OK)

[2-14,]{.underline} insert blank line before paragraph beginning "Our
cost-driver analysis..."

[Page 2-14, last par]{.underline}. instabilities or instability? 1^st^
sent says "possible instabilities" 3^rd^ sent says "this instability.."

[Page 2-14, also in last par.]{.underline} add "radiation" "...could
come from using the synchrotron **radiation** damping...:"

**Chapter 3.**

I guess you realize that the .pdf version of Chapter 3 doesn\'t have all
the symbols! I ran into this same problem when I did the proton driver
report (also the accelerator physics chapter). There are
incompatibilites between Acrobat 4.0 and Office2000, and also with
Windows2000. I fixed this by upgrading to 4.05 (no charge since I
already had a licensed version of Acrobat).

In this chapter captions use ":" and not "." I looked at the TeV2000
report and they also use ":" but you may want to change in chapter 3 so
it is the same as the rest of the book.

Captions: several end in ".." e.g. Figure 3.3, Figure 3.4, Table 3.5,
Table 3.12 etc. "find and replace" should catch them all

[Page 3-5, Table 3.2]{.underline}. change "stores" to "store" in caption

[Page 3-5, same table]{.underline}, SYNCHROTRON misspelled (also suggest
adding a blank line before Synchrotron and remove caps)

[Page 3-7, 3.2.1.2, par.1]{.underline}, add "the" "...as well as the 20
TeV proton abort..."

[Page 3-8, 3.2.1.3]{.underline}, need a space "...rolled by 0.12 rad..."

[Page 3-12, 3.2.2.3]{.underline}, quotes screwed up, "conventional"

[Page 3-16, par 3]{.underline}, drop "such" "A similar system may be
required..."

[Page 3-18, 3.2.4]{.underline}, add "the" "We have measured the slow
ground motion in **the** 300-ft..."

[Page 3-18, last sent]{.underline}, suggest change "Design and test of
such a system at the Tevatron is **important** VLHC beam...."

[Page 3-19, 3.2.5, par 1]{.underline} "...before a final design approach
**is** reached."

## Page 3-19, 3.2.5, par 2 change "phases" to "stages"

[Page 3-19, 3.2.5, par 3]{.underline} "the 20 TeV collider" ambiguous.
It is a 40 TeV collider. Could say "...before transfer to the 20 TeV
ring.."

[Page 3-19, 3.2.5.1]{.underline}, drop "in" formulas in estimate →
formulas estimate

[Page 3-27, format]{.underline}, line up numbered items for advantages
and disadvantages

[Page 3-27]{.underline}, change "upcoming" to "coming"

[Page 3-29, 3.3.4.2, par.1]{.underline}, change "they" to "the" the
total separation

[Page 3-29, next par]{.underline}. space needed "Figure 3.11 shows..."

[Page 3-31, Figure 3.12.]{.underline} needs "." at end of caption.

**Chapter 4.**

[Page 4-8]{.underline}, need a line after Figure 4.7 caption, before
par. beginning "Analysis"

**Chapter 5.**

General comment: I noticed that in Chapter 5 you dropped down one font
size for reference numbers in the text. I actually like that look, but
it is not the same as (some) other chapters.

[Page 5-1]{.underline}, drop "which is" and add "," after refs
\[1,2,3\].

[Page 5-6]{.underline}, 2^nd^ par, "\[11\]" instead of \[1111\]

[Page 5-8. Figure 5.6.]{.underline} lc gradient shift

General comment on captions. There is sort of a mixed style on caps in
the captions. I looked back at the TeV2000 report and notice that there
are no caps (except of course the first word in the caption, or the
first word in each phrase or sentence of the caption, or proper nouns).
One could change these. Some stick out like the one flagged; others seem
OK as they are.

[Page 5-10, 2^nd^ par from bottom.]{.underline} "Power" needs to be cap

[Page 5-11. top of page]{.underline}. Singular. "critical temperature"

[Page 5-13, bottom par]{.underline}. change "performing" to "performed"

[5-14, 1^st^ par.]{.underline} space \~20 μm

[5-16, format]{.underline}. Insert line before par beginning "Vacuum
..."

[5-18, item 3 in numbered list]{.underline}, drop ";"

[5-23, 3rd par,]{.underline} lc LHC interaction region.

[5-23, 5.1.5, format]{.underline}. Insert lines between paragraphs.

General. Sometimes the Level 4 headings have the 1^st^ par indented,
e.g. 5.1.5.3, 5.1.5.4, 5.1.6.1, 5.1.6.3 and sometimes they do not, e.g.
5.1.6.2, 5.1.7.1, 5.1.7.2 etc.

[5-26. 5.1.5.3, par. 2]{.underline}. change "existing" to "main"

General. With left justification and no hyphenation, i.e. jagged format,
some paragraphs are so jagged they look bad. Par.1 in 5.1.5.3 is an
example. One could go through and fix the really jagged ones with a few
hyphens.

[5-28. 5.1.5.4.1. 1^st^ line.]{.underline} Get rid of space. Figure
5.22.

[5-29. par2]{.underline}. 6 → six

[5-31, par.2]{.underline}, eliminate space 10^o^C

[5-31, next par.]{.underline} add "the" "...Fermilab Recycler Ring, the
requirement..."

[5-35]{.underline}, eliminate "," in sent "...some resistance to the
circuit to ensure a better beam...."

[5-36, table 5.14]{.underline}, 464? Its 456 in Table 5.8

[5-37]{.underline}, change "**:**" to "**.**" after two bold headings

[5-42]{.underline}, prefer ± to +/-

[5-44]{.underline}, 5.1.7.1, 1^st^ par, eliminate "also" would also
expect → would expect

[5-46]{.underline}, change "have" to "has" such as have been developed →
such as has been developed

[5-47]{.underline}, circumference, change 230-km to 233-km

[5-47, 2^nd^ to last bullet]{.underline}, eliminate space after readout
"readout,"

[5-48, 1^st^ par., sent starting "A tunnel cross
section..."]{.underline} capitalize "a"

[5-51, 2^nd^ par]{.underline}, add "of" "...chances of pilot error on
monotonous..."

[5-51, par below Figure 5.32, format]{.underline}, indent

[5-54, 5.1.8.8, 2^nd^ par]{.underline}. r.m.s. → rms

[5-55, format]{.underline}, insert blank line before paragraph beginning
"Separation/recombination dipoles and the ..."

[5-55, next par.]{.underline} cap "P", "Pulsed injection ...."

[5-56, 5.1.8.11, par 1.]{.underline} cap "C" "Cryogenic plant
performance and ...."

[5-57, Table 5.18]{.underline}, suggest adding a line at bottom to
"close" the table

[5-61, Table 5.19]{.underline}, add lines (or a box around the table)

[5-62 and 5-67]{.underline}. reduce white space.

[5-66, last par.]{.underline} Is **pumpouts** one word?

[5-77, bottom of page.]{.underline} DSP, first mention. Suggest here
write out "Digital Signal Processors (DSP)"

[5-79]{.underline}, since first mention of DSP is now on page 77, one
could drop it here (or leave it)

[5-79]{.underline}, CH~4~ (subscript, 2 places)

[5-79]{.underline}, what is PLD? Define

[5-87]{.underline}, would prefer degrees → ^o^ to be uniform (2 places)

[5-88, end of 1^st^ par]{.underline}, insert "used" "...operation as we
have used here."

[5-89]{.underline}, space out 5.2 × 10^-21^, 1.7 × 10^-6^ (use × symbol)

[5-89, 5.3.1, par.2]{.underline}, change "or" to "of" in "...and a small
region of arc magnets downstream..."

[5-92, 5.3.2.3, par 1]{.underline} add "of" in "...and accept a factor
of two higher..."

[5-92, 5.3.2.3, par 1]{.underline} change "estimation" to "estimate"

[5-94, table 5.27]{.underline}, write out "Tevatron"

[5-103, C. Airborne Radioactivity]{.underline}, \[1065\] should be
\[106\]

[Chapter 5 references]{.underline}. Font is very small (smaller than
other chapters). Is that what you want?

[5-106, ref 70]{.underline}, invert order of , and "

[5-108, ref 103]{.underline}, remove {} from DOE

**Chapter 6.**

[6-1]{.underline}, drop last sentence in par. 1 (breaks the flow),
"However, NbTi and its etc." (gets stated in section 6.1.4.

[6-1, par.2]{.underline}, drop "had" in "The magnet group at Twente
University (Netherlands) achieved ..."

[6-2, 6.1.1]{.underline}, drop "." in header.

[6-2, (in red) references to Chapter 3.]{.underline} drop; these don't
exist, and sentence reads fine without them

[6-2, 6.1.1, 3^rd^ bullet]{.underline}, "field quality..." → "good field
quality...:"

[6-3, last par.]{.underline} "stress management strategy" reference to
Peter McIntyre?

[6-4, par begining "Both coils..."]{.underline} Figure 6.12 → Figure 6.2

[6-4, par just above Table 6.2]{.underline}, first sentence "The
magnetic field ... is described by Eq. 3.5." (there is no Eq. 3.66) --
remove red

[6-4, last sent]{.underline}, Figure 6.45 → Figure 6.5

[6-6, par.1, last sent.]{.underline}, at all conditions → in all
conditions

[6-6, par.2,]{.underline} Figure 6.67 → Figure 6.7

[6-6, bottom par]{.underline} @ → at (@ signs in tables OK but also
could be changed)

[6-6, last sent,]{.underline} drop "the" "...achieved using R&D Nb~3~Sn
strands ..."

[6-7, top sent]{.underline}, drop the sentence (no expression in Chapter
3), and par reads fine without that sentence.

[6-7, par below Table 6.4]{.underline}, add "the" and fix figure number,
"The coil magnetization effect is shown in Figure 6.10."

[6-7, 6.1.4]{.underline}, drop reference to section 3.5. "The correction
system...for Stage-2 consists of two..."

[6-8,]{.underline} drop (red) references to Figs in chapter 3 (they
don't exist). "The arc correction system includes dipole, quadrupole and
sextupole correctors combined in different packages: a)
dipole-sextupole....."

[6-8, middle of par. 1]{.underline}, compared on providing → compared in
providing

[6-8, par. below Figure 6.11]{.underline}, drop "following", having the
following parameters listed below→ having the parameters listed below

[6-9, Table 6.5]{.underline} T\*m/cm^n^→ T-m/cm^n^

[6-9]{.underline}, add blank line after Table

[6-9, par.1]{.underline}, and another one is → and the other is

[6-9]{.underline}, section 3 → Chapter 3 (not red)

[6-9, par.2]{.underline}, will require a development → will require
development

[6-9, par.2]{.underline}, section 10.2 → Chapter 10 (not red)

[6-9, Table 6.6 caption]{.underline} (flat optics) → (flat beam optics)

[6-10, par below Table 6.7]{.underline}, Nb3Sn → Nb~3~Sn

[6-10, next sent]{.underline} In case of the vertical → In the case of
the vertical

[6-10, same sent]{.underline} "....to provide horizontal field..." →
"....to provide a horizontal field..."

[6-10, next sent]{.underline} "double bore magnet with the horizontal
field.." → "double bore magnet with horizontal field.."

[6-10]{.underline}, shown in Figure 10.1 of section 10. → shown in
Figure 10.4. (not red)

[6-10, par.2]{.underline} drop "but realistic magnets"

[6-10, par.2]{.underline} but in significantly larger aperture.. → but
in a significantly larger aperture. (add "a", drop extra ".")

[6-10, par.2]{.underline}, remove red "section 5.1.4.1" (reference is
OK)

[6-10, par.2]{.underline}, Field quality in this magnets → Field quality
in these magnets

[6-10, pars. 2 & 3]{.underline}, drop references in red to Table 3.?
(two places)

[6-10, par.2]{.underline}, need "." at end

[6-10, par.3]{.underline}, slight rewording: "...superconductor to
provide large operation margins (critical temperature and critical
current) required in the IR with the high level of radiation heat
deposition."

[6-11, end of par.1]{.underline}, suggest dropping the whole sentence
"The length and weight of the DS magnets change etc." (seems sort of
obvious and also there is no Fig. 3-21)

[6-12]{.underline} move "similarly" to beginning of sent. "Similarly two
blankets of ..."

[6-12, 1^st^ par. after Table 6.9]{.underline}, the HF magnet in Figure
2.4 is not "anchored to the tunnel floor." Could just drop the phrase
"that in turn anchors...."

[6-12, next sent]{.underline}. The emphasis was on → The emphasis in the
design was on

[6-12, last sent in that par]{.underline}., illustrates a conceptual
cross-section that utilizes→ illustrates a concept that utilizes

[6-13]{.underline}, MLI, write out multi-layer insulation

[6-13, 1^st^ bullet]{.underline}, drop "," (comma)

[6-14, 6.1.7, par.1]{.underline}, between the coil and the ground.→
between the coil and ground.

[6-14, 2^nd^ par.]{.underline} no () 1000 V (to ground) and 100 V (turn
to turn) → 1000 V to ground and 100 V turn to turn.

[6-14, below Table 6.10]{.underline} copper coated section of the 3
twist pitch lengths→ copper coated section of 3 twist pitch lengths

[6-15, 6.1.8, 2^nd^ par.]{.underline} drop "As it can be seen,"

[6-16, 5^th^ line from top]{.underline}, 7200 working hour → 7200
working hours

[6-16, 6-17]{.underline} eliminate (reduce) white space

[6-17, 6.2.1]{.underline} reduce bunch lengths → reduce bunch length

[6-17]{.underline}, remove (red) "more stuff to follow later" (or add
something here??)

[6-17, 6.2.2.1, 6.2.2.2, 6.2.2.3, 6.2.2.4, 6.2.2.5 etc.]{.underline}
drop "." at end of caption

[6-18, par. below Figure]{.underline} remove "above" (paragraph might
move if white space is reduced)

[6-19, 1^st^ par.]{.underline} NbSn → Nb~3~Sn

[6-19, 6.2.2.3]{.underline} Nb3Sn → Nb~3~Sn

[6-20, Table 6.12]{.underline}, add lines (esp between cols.) and/or box

[6-20, 6.2.2.4]{.underline}, so 900 corrector leads per sector → so
there are 900 corrector leads per sector

[6-20, 6.2.2.4]{.underline}, VLHC-2 → Stage-2

[6-21, 6.2.2.6]{.underline}, 3x10\^12 → 3 × 10^12^

[6-21, 6.2.2.8, par.1]{.underline} VLHC-2 → Stage-2

[6-21, 6.2.2.8, par.1 "technically feasible"]{.underline} remove " "

[6-21, 6.2.2.8, par.1]{.underline} remove last sentence "Recommendations
for cryogenic..."

[6-22, par.1]{.underline} 1.2 10^16^ → 1.2 × 10^16^

[6-22, 6.2.3.2.1]{.underline} VLHC-2 → Stage-2 (2 places)

[6-22, 6.2.3.2.1]{.underline} (2 places) plug power → wall plug power

[6-23, 6.2.3.2.2]{.underline} after 100 K, replace comma with period

[6-23, Table 6.13]{.underline}, don't split table between pages

[6-23, Table 6.13, heading of 2^nd^ col,]{.underline} 5 × 7.5 hours
would be clearer

[6-24]{.underline}, blank line after table

[6-24, 6.2.3.3.4]{.underline} 3ּ10^15^ → 3 × 10^15^ 1.1ּ10^19^ → 1.1 ×
10^19^

[6-25, 6.2.3.5.1]{.underline} VLHC 2 → Stage-2

[6-26]{.underline}, white space

[6-27, 6.2.3.5.3, 2^nd^ line]{.underline} with → by

27. that satisfies the above mentioned thermal stipulations → that
    satisfies these thermal considerations

[6-27, Figure 6.17 caption]{.underline} according to → in

[6-28 top par.]{.underline} 35 x 10 x 10 mm → 35 mm × 10 mm × 10 mm

[6-28, top par.]{.underline} aiming at the reduction → aimed at the
reduction

[6-28, 6.2.3.5.4, par.2]{.underline} of some Ω.→ of a few ohms.

[6-28, 6.2.3.5.4, par.3]{.underline} 3ּ10^12^ → 3 × 10^12^

[6-28, 6.2.3.5.4, par. 3]{.underline} Transverse Mode Coupling
Instability → TMCI

[6-28, 6.2.3.5.4, par. 5]{.underline} drop "e.g."

[6-28, 6.2.3.5.4, par. 5]{.underline} combine sentences: "The impedance
calculations.....are made of copper and have indicated the viability..."

[6-29, 6.2.3.5.6]{.underline} \[4912\] → \[49\]

[6-29, 6.2.3.5.6]{.underline}, stage-2 VLHC → Stage-2

[6-29, 6.2.3.5.6]{.underline}, VLHC-2 → Stage-2

[6-29, 2^nd^ to last line]{.underline}, drop "for"

[6-30, par.2]{.underline} of quench → of a quench

[6-30, par.2]{.underline} ½ → half

[6-30, par.2]{.underline} x9 → nine times

[6-30, par.3]{.underline} K\* → K

[6-32, 6.2.4.5]{.underline} \[501\] → \[50\]

[6-33, reference 22]{.underline}, Nb~3~Sn

**Chapter 7.**

This is the only chapter with full justification. Change to LEFT
justification.

[7-1, lst par]{.underline}, 232 → 233

[7-1, 2^nd^ par]{.underline}, This fault zone does end → This fault zone
ends

[7-3, Figure 7.2 caption]{.underline}, 232 → 233

[7-10, Table 7.2 caption]{.underline}. unbold Table 7.2

[7-10, below the table]{.underline} anticipated that there be →
anticipated that there will be

[7-18 etc.]{.underline} Not sure---somehow "Experimental Areas" and
"Experimental Halls" sounds OK, but not "Experimental Caverns" (almost
as if making the Cavern is the experiment!). So I'd change these to
"Experiment Caverns" with a "find a replace" (also in Table of Contents)

[7-22]{.underline}, Figure 7.15 duplicates Figure 2.5. Do we need both?

[7-23, Table 7.5 caption]{.underline}. unbold Table 7.5

[7-23, Table 7.5]{.underline} lines or box

[7-26, par.2, 1^st^ sent]{.underline}, over → over it

[7-26, par.2]{.underline}, (Per C.T. Murphy:) → \[13\]

[7-26, par.3]{.underline}, better than 1 part per → less than 1 part per

[7-27, 7.7.2.2]{.underline} For comparison the Figure 7.17 → For
comparison Figure 7.17

[7-27, same sent]{.underline}. No caps in outside control network

[7-28]{.underline}, no caps (??) in laser tracker

[7-29]{.underline}, can move Table 7.6 up aways

[7-30, par.2]{.underline} Personnel access and egress are issues with
the → Personnel access and egress are issues of the

[7-30, par.3]{.underline} lc liquid nitrogen, liquid helium

[7-30, 4^th^ par.,]{.underline} C^11^

[7-31, 2^nd^ par]{.underline}. 7,200 gpm total, to be distributed →
7,200 gpm total distributed

[7-31, 4^th^ par]{.underline}. lc helium

[7-32, 7.9]{.underline}, suggest several changes in 1^st^ par.

A preliminary impression of a possible construction schedule is based
largely on the Kenny study for the 3 TeV VLHC Booster Tunnel.\[9\]. The
schedule presented as part of that study included a 34-km circumference
tunnel in Galena Platteville, four major shafts, and two injection
ramps. Other portions of the VLHC civil construction that cannot be
extrapolated from the Kenny study such as experiment caverns, adits etc.
are at this time only rough estimates. By the middle of May, 2001, CNA
Engineers \[10\] will be providing costing and scheduling estimates for
the entire scope of the VLHC project, including three geological sitings
for the tunnel.

[7-32, 7.9, 4^th^ par]{.underline}., 232.5 → 233

[7-32, 7.9, 4^th^ par., 2^nd^ to last sent]{.underline}. Reword: "There
may be advantages to reconfigure to a larger number of ..."

[7-32]{.underline}, insert line between 5^th^ and 6^th^ pars.

[7-34, 1^st^ par. sort of in middle]{.underline} Since there no
injection lines → Since there are no injection lines

[7-387]{.underline}, suggest a rewrite of 7.10 (should fly it by Peter
G.)

Little real engineering study or design has been devoted so far toward
the conventional construction aspects of the VLHC. There are several
outstanding issues that must be addressed to go beyond the simplified
models presented. Of paramount importance is to reduce the overall cost.
This can be done by simplifying the underground construction, performing
R&D on tunneling methodology \[20\]. This includes optimizing TBM
utilization, especially in the region between utility straights.

There is no design yet for the Stage-2 abort. Its design will impact on
the design of the utility straight section cavern or widened tunnel.
Other issues to be addressed are the stub for the LF bypass for Stage-2.
The LF bypass ring with stronger magnets will cross the enclosure at
floor level and will need ramps across the aisle.

There are installation issues to resolve. How many magnet delivery
shafts will be needed to install the 16-m long Stage-2 HF dipoles? What
are the details of the injection/equipment ramp interfaces to the
Tevatron and the surface? The experiment caverns will house enormous
detectors deep underground. What are the optimal shaft dimensions for
installation and assembly of the detector components?

The optimal size for the Stage-2 experiment caverns where 175 TeV
collisions take place needs engineering and physics design optimization
of the roof span. The beam heights in the Stage-1 and Stage-2 colliders
are different but could, if necessary be made the same where they pass
through the detectors.

[7-40]{.underline}, drop List of figures

**Chapter 8.**

[8-1, 8.1 end of 2^nd^ par]{.underline}. 3TeV/c → 3 TeV/c

[8-2, top par]{.underline}. hundred of square meters → hundreds of
square meters

[8-2, top par.]{.underline} could be used for Stage 1 VLHC → could be
used for **the** Stage-1 VLHC

[8-2, beginning of 4^th^ par.]{.underline} located outside calorimeter →
located outside the calorimeter

[8-3, 2^nd^ sent.]{.underline} 10^34^cm^-2^s^-1^

Table captions. This chapter uses colons instead of periods.

[8-3, below Table 8.1]{.underline} to tape of about 50 Hz → to tape at
about 50 Hz

[8-3, bottom par]{.underline}. of the Stage 1 into the → of the Stage-1
detector into the

[8-4, 8.2, top line]{.underline} from VLHC Stage 1 to → from Stage-1 to

[8-5, 2^nd^ line from top]{.underline} drop "which is"

[8-5, captions Fig. 8.2 and 8.3]{.underline} 100TeV → 100 TeV

[8-6, 8.3 2^nd^ par]{.underline}. 50μm → 50 μm

[8-6, 8.3 2^nd^ par]{.underline}. are met easily. → are easily met.

[8-6, 8.3 3^rd^ par.]{.underline} close to beam pipe. → close to the
beam pipe.

[8-7, top line]{.underline} charged particles flux → charged particle
flux

[8-7, top line of next par.]{.underline} In order to define acceptable →
In order to define an acceptable

**Chapter 9.**

Do you really want all caps in the section headings?

[9-1, 9.2]{.underline} there are nine major cost drivers listed in Table
9.1 (not eight)

[9-1. Table 9.1 caption and col.2 heading]{.underline} "....technical
description section" (not chapter)

[9-1, Table 9.1]{.underline} & → and

[9-1, Table 9.1]{.underline} Civil Construction above ground is section
7.6; Civil Construction below ground is sections 7.2 -- 7.5.

[9-2, par.2]{.underline} indirects → indirect costs

[9-3, par.1]{.underline} such as 11 m yokes sections → such as 11-m yoke
sections

[9-3, par.3]{.underline} after "for handling the 65-m magnets" I think
there should be a comma, not semi-colon

[9-4 Table 9.2.]{.underline} I think it would look better if the columns
added up. You could adjust "Other Accelerator Systems" so Totals come
out 3800 and 100%

another solution: add in the table after "Total Cost" "Total Cost
(rounded)"

[9-4, par.1]{.underline} construction is captured in labor costs →
construction is in labor costs

[9-5, Table 9.3]{.underline}. Left hand column adds to 101%

**Chapter 10.**

[10-2, 10.1.3 Beam Stability]{.underline}. There are a few items in
other chapters that didn't find their way into this section.

3.2.4 proposes (1) long-term ground motion studies with more sensors (2)
dB/B measurements on VLHC magnet prototypes (3) low noise feedback
system tested in the Tevatron.

3.2.5.1. (1) RF quadrupole -- this could be prototyped and tested (2)
possibility of studying TMCI using the Tevatron Electron Lens

[10-6, 10.1.8, par.2]{.underline} I prefer "advances the energy
frontier" to "get to the energy frontier" (since that particular
frontier seems to always recede as we approach it!)

[10-9, par.2]{.underline} witch → which