# DRAFT 6 4/26/01 {#draft-6-42601 .unnumbered}

# Design Study for a Very Large Hadron Collider {#design-study-for-a-very-large-hadron-collider .unnumbered}

**PDF versions of chapters:**

1\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap01_Intro_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap01_Intro_draft6.pdf)

2\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap02_Overview_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap02_Overview_draft6.pdf)

3\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap03_Accelerator_physics_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap03_Accelerator_physics_draft6.pdf)

4\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap04_Fermi_as_Injector_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap04_Fermi_as_Injector_draft6.pdf)

5\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap05_Stage1_components_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap05_Stage1_components_draft6.pdf)

6\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap06_Stage2_components_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap06_Stage2_components_draft6.pdf)

7\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap07_Conv_construction_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap07_Conv_construction_draft6.pdf)

8\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap08_Experiments_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap08_Experiments_draft6.pdf)

9\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap09_Cost_drivers_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap09_Cost_drivers_draft6.pdf)

10\.
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\upload\\PDF\\Chap10_R&D_draft6.pdf](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/upload/PDF/Chap10_R&D_draft6.pdf)

# *working* Table of Contents  {#working-table-of-contents .unnumbered}

{note: subsections do not necessarily agree with actual contents}

*{actual table of contents is in the Chapter 1 file}*

total page limit = **200 pgs**

Acknowledgements & Author List

Executive Summary (Limon) **1 pg**

1.  **Introduction (Limon, J. Jackson et al.) 3 pgs.**

[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\01_Introduction\\Draft6\\Chap1_Intro_draft6_010425.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/01_Introduction/Draft6/Chap1_Intro_draft6_010425.doc)

1.1 Rationale --

> 1.1.1 short discussion of the physics potential with references to
> work done
>
> and work to be done;

2.  why we are doing this study, what it is (an attempt to illuminate
    the major issues) and what it is not (a conceptual design and cost
    estimate)

3.  a discussion of the major challenges to higher energy hadron
    colliders

1.2 The Staging Scenario Concept

1.  A 2-column table with major parameters for Stage 1 and 2 imbedded
    in:

2.  A short description of the staging steps, how we get there from here

3.  A [short]{.underline} statement about other possibilities that are
    \"outside the scope of this study\" (medium-field, e+e- etc.)

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2.  Public relations (J. Jackson)

    1.  The needed effort in public relations to make VLHC acceptable
        and welcome by the general public

    2.  What are the public relations issues

```{=html}
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```
2.  **Machine Layouts (both stages) (Malamud/Limon) 10 pgs.**

> [\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\02_Machine_layouts\\Draft6\\VLHC_ch2-rev5-pjl_010425.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/02_Machine_layouts/Draft6/VLHC_ch2-rev5-pjl_010425.doc)
>
> 2.1 The Staged Approach and Footprint Description.
>
> 2.2 Geometry

3.  Injection lines (Foster)

> 2.4 Extraction (abort system)
>
> 2.5 Stage 1 to Stage 2 transfer and bypass
>
> 2.6 Experimental area(s) (Denisov)

\[Each section will refer to a more detailed discussion in other
Chapters. We see this section as a high-level description of the
physical collider with some perspective drawings of tunnels, IRs,
footprint schematics, whatever seems interesting\]

3.  **Collider Accelerator Physics and Design (both stages) (Peggs &
    Syphers) 25 pgs.**

[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\03_Accelerator_physics\\Draft6\\Chap3_Accelerator_physics_draft6_010425.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/03_Accelerator_physics/Draft6/Chap3_Accelerator_physics_draft6_010425.doc)

> 3.1 Major accelerator challenges of Stage 1, including discussion of
> having both rings in one tunnel
>
> 3.2 Stage 1 primary parameters
>
> 3.2.1 Lattice
>
> 3.2.1.1 Arc

1.  Utility straight sections

2.  Interaction Regions

> 3.2.2 Magnet aperture and field quality; includes requirements of
> high-order correctors
>
> 3.2.3 Tolerances and corrections; alignment, motion; includes
> requirements of dipole correctors
>
> 3.2.4 Beam current limitations \-- beam stability; requirements of
> feedback systems
>
> 3.2.5 Synchrotron radiation
>
> 3.3 Major accelerator challenges of Stage 2
>
> 3.4 Stage 2 primary parameters
>
> 3.4.1 Lattice
>
> 3.4.1.1 Arc
>
> 3.4.1.2 Utility straight sections
>
> 3.4.1.3 Interaction regions
>
> 3.4.2 Low energy ring to high energy ring transfer lines
>
> 3.4.3 Magnet aperture and field quality; includes requirements of
> high-order correctors
>
> 3.4.4 Tolerances and corrections; alignment, motion; includes
> requirements of dipole correctors
>
> 3.4.5 Beam current limitations; includes requirements of feedback
> systems
>
> 3.4.6 Synchrotron radiation

4.  **The Fermilab complex as injector (Martin) 10 pgs.**

[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\04_Fermilab_as_injector\\Draft6\\ch4-rev5_ed010419.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/04_Fermilab_as_injector/Draft6/ch4-rev5_ed010419.doc)

1.  Beam properties

2.  Operational scenarios

3.  Tevatron transfer lines

4.  Transfer line magnets and kickers

**5. Stage 1 - Detailed description of the machine and components (as
noted)**

***combined chapter file:***
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\05_Stage1_components\\Draft6\\Chapter_5_v6_010425.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/05_Stage1_components/Draft6/Chapter_5_v6_010425.doc)

1.  Magnets (Strait)

    1.  Introduction/Overview (Strait)

> 5.1.2 Combined function arc magnets (V.K.) **15 pgs.**
>
> 5.1.2.1 Magnetic design (V.K.)

2.  Transmission line (Piekarz)

3.  Mechanical and thermal design (Novitski)

> 5.1.2.3.1 Transmission line thermal design
>
> 5.1.2.3.2 Cryostat internal structure
>
> 5.1.2.3.3 Interconnects
>
> 5.1.2.3.4 Beam pipes
>
> 5.1.3 Correctors (V.K.) **4 pgs**.
>
> 5.1.4 Interaction Regions (Lamm) **4 pgs.**
>
> 5.1.4.1 Single aperture low-beta quads
>
> 5.1.4.2 Interaction region subsystems
>
> 5.1.5 Special collider-ring magnets (Ioury Terechkine) **5 pgs.**
>
> 5.1.6 Magnet production (Carson/Bossert) **7 pgs**.
>
> 5.1.7 Magnet testing and measurements (Schlabach) **3 pgs**.
>
> 5.1.8 Magnet installation, incl. survey and alignment (Foster, Volk,
> VK) **5 pgs**

1.  Accelerator Systems (Foster)

> 5.2.1 Magnet power supplies **1 pgs**
>
> 5.2.2 Current leads
>
> 5.2.3 Quench protection **1 pgs**
>
> 5.2.4 Beam instrumentation, including corrector power supplies **4
> pgs**

5.  Once-per-turn instrumentation

> 5.2.6 Beam dampers (Lambertson, Marriner) **2 pgs**
>
> 5.2.7 Injection (incl. injection line magnets not in ring) **2 pgs**
>
> 5.2.8 Extraction and beam stop **3 pgs**
>
> 5.2.9 Beam cleaning (Drozhdin) **1 pg**
>
> 5.2.10 RF Systems (Belomestnykh) ? pgs
>
> 5.2.11 Cryogenic system (Klebaner, Norris) **7 pgs**
>
> 5.2.12 Vacuum system (Pivi, Turner) **4 pgs**

13. Beam abort and absorbers (Mokhov)

> 5.2.13 Control System **1 pg**

5.2.14 Operational considerations; reliability, maintenance, component
replacement

> 5.2.15 Safety systems for operation (beam, power supply, ODH, etc.)
> **1 pg**
>
> 5.3 Environmental issues during operation (Cossairt, Mokhov) **5 pgs**

1.  Shielding (incl. abort dump)

2.  Radioactivation of components and maintenance issues

3.  Groundwater and other environmental radiation issues

4.  Worst case scenarios

####  {#section .unnumbered}

#### **6. Stage 2 -- Not so detailed description of the machine and components** **(The goal here is to describe as much detail as needed to demonstrate feasibility and guide the R&D, but not enough for a cost estimate. Sometimes, just describing the changes from Stage 1 will be sufficient.)**  {#stage-2-not-so-detailed-description-of-the-machine-and-components-the-goal-here-is-to-describe-as-much-detail-as-needed-to-demonstrate-feasibility-and-guide-the-rd-but-not-enough-for-a-cost-estimate.-sometimes-just-describing-the-changes-from-stage-1-will-be-sufficient. .unnumbered}

***combined chapter file:***
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\06_Stage2_components\\Draft6\\Chap_6_dr6_010427.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/06_Stage2_components/Draft6/Chap_6_dr6_010427.doc)

> 6.1 Superconducting Magnets Systems (Zlobin; Strait & Gourlay) **12
> pgs**
>
> 6.1.1 Arc dipole magnets
>
> 6.1.2 Arc quadrupole magnets
>
> 6.1.3 Corrector magnets

4.  Special magnets

> 6.1.5 Magnet production and testing
>
> 6.1.6 Magnet installation, incl. survey and alignment
>
> 6.2 Accelerator Systems (Foster) 15 pgs
>
> 6.2.1 RF Systems
>
> 6.2.2 Cryogenic system (Peterson) **(5 pages)**
>
> 6.2.3 Vacuum system (Bauer, Darve, Terechkine?) **(5 pages)**

4.  Magnet power supplies and quench protection (Lamm)

> 6.2.5 Beam instrumentation
>
> 6.2.6 Feedback
>
> 6.2.7 Control System
>
> 6.2.8 Beam abort

9.  Beam cleaning

10. Operational considerations and scenarios

11. Safety systems for operation (beam, power supply, ODH, etc.)

> 6.3 Environmental issues during operation (???)
>
> 6.3.1 Shielding (incl. abort dump)
>
> 6.3.2 Radioactivation of components and maintenance issues
>
> 6.3.4 Groundwater and other environmental issues
>
> 6.3.5 Worst case scenarios

### 7. Conventional Construction and Facilities Stages 1 & 2 (Garbincius) 20 pgs {#conventional-construction-and-facilities-stages-1-2-garbincius-20-pgs .unnumbered}

### **[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\07_Conventional_construction\\Draft6\\ch7-2may.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/07_Conventional_construction/Draft6/ch7-2may.doc)**  {#tdserver1projectvlhctddocdesignstudyreport07_conventional_constructiondraft6ch7-2may.doc .unnumbered}

> 7.1 Geology of the Fermilab Region
>
> 7.2 Injection line tunnels (various scenarios?)
>
> 7.3 Collider tunnel and enclosures
>
> 7.4 Accelerator utility caverns (includes special requirements for
> abort system)
>
> 7.5 Experimental caverns and bypasses
>
> 7.5.1 In Stage 1
>
> 7.5.2 In Stage 2
>
> 7.6 Survey and alignment (Global, for tunnel)
>
> 7.7 Surface buildings
>
> 7.7.1 Stage 1
>
> 7.7.2 Stage 2

7.8 ES&H issues during construction (worker health & safety, wetlands
restoration, muck disposal, egress, etc.)

**8. Experiments and Detector Issues, Stages 1 & 2 (Denisov)** **6 pgs**

[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\08_Experiments_and_detectors\\Draft6\\chap8_rev6.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/08_Experiments_and_detectors/Draft6/chap8_rev6.doc)

8.1 Description of experiment parameters for stage 1 (i.e. no different
from CMS or ATLAS)

8.2 Description of major experiment challenges for Stage 2 (\~ 100
interactions per crossing, radiation, etc.

> 8.3 Machine-detector interface requirements incl. muon backgrounds for
> Stage 1

**9. Cost drivers, Stage 1, only (Kerby, Finley) 10 pgs**

[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\09_Cost_drivers\\Draft6\\VLHC_Chap9_ed010308.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/09_Cost_drivers/Draft6/VLHC_Chap9_ed010308.doc)

> 9.1 Discussion of the limitations of the cost estimates of the major
> cost drivers
>
> 9.2 Expected cost drivers
>
> 9.3 WBS Dictionary
>
> 9.4 Cost estimate in WBS format

**10. R&D Programs 5 pgs**

*spreadsheet from GWF (outline of R&D tasks to be used as a guide?)*
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\10_R&D_programs_and_summary\\Draft4\\R_and_D_List_V0.xls](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/10_R&D_programs_and_summary/Draft4/R_and_D_List_V0.xls)

*the existing Chapter 10:*
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\10_R&D_programs_and_summary\\Draft6\\Chap10_R&D_v6_010427.doc](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/10_R&D_programs_and_summary/Draft6/Chap10_R&D_v6_010427.doc)

> 10.1 Needed R&D, Stage 1
>
> 10.1.1 Goals for performance and cost
>
> 10.1.2 Estimated schedule, R&D cost, etc.
>
> 10.2 Needed R&D, Stage 2
>
> 10.2.1 Goals for performance and cost
>
> 10.2.2 Estimated schedule, R&D costs, etc.
>
> 10.2.x Cryogenic R&D

### Summary (Limon, et al)

**Appendix A** *(for internal use; not in final report?)***.** Staged
Parameter List\
[\\\\tdserver1\\project\\VLHC\\TDDoc\\DesignStudyReport\\StagedParameters_V0.4.xls](../../../../../../../../project/VLHC/TDDoc/DesignStudyReport/StagedParameters_V0.4.xls)

#  Executive Summary {#executive-summary .unnumbered}

yada yada yada