NuMI – Mechanical Engineering

 

Carrier and Pre-Target Tunnels

Magnet Transport System

 

Page Maintained by Mayling Wong (mlwong@fnal.gov)

 

This page contains information about the mechanical engineering of the magnet transport system for the NuMI Carrier and Pre-Target tunnels.

·        Drawings

·        Magnets

·        Meetings

·        Photos

·        Engineering Notes

 

Drawings

 

Installation Drawing – PPD Drawing Number 8875.119-ME-427811 (2 April 2004)

·        Sheet 1 (Ion pump assembly in 6-ft pipe of Carrier Tunnel, HQ113, VT113, HT114, HQ114)

·        Sheet 2 (HQ115, HT115, HQ116, VT116)

·        Sheet 3 (HQ117, HT117, H117)

·        Sheet 4 (H117, HQ118, VT118, V118_1, VT118_2)

·        Sheet 5 (V118_2, HT119, HQ119, V118_3, V118_4, HQ120)

·        Sheet 6 (HQ120, HQ121, HT121, VT121, shielding wall)

·        Sheet 7 (Vacuum system layout)

·        Sheet 8 (Vacuum system layout, Bill of Materials)

·        Sheet 9 (End views of quad and dipole magnets)

 

A solid model of the tunnel (jpg file) is posted.  (24 April 2003).

 

Profile Monitors:  Preliminary drawings of the profile monitors on the stands are posted for the FNAL and the UofTexas designs (6 April 2004).

·        Stand for FNAL design drawing (pdf file)

·        FNAL design installed – beamline view in the rock cut portion of the Carrier Tunnel (jpg file)

·        Stand for UofTexas design drawing (pdf file)

·        UofTexas design installed – beamline view in the rock cut portion of the Carrier Tunnel  (jpg file)

 

An end view of the magnet HQ114 shows the clearance between the 3Q120 and the cable tray support is less than 1-inch (pdf file) (10 April 2003).

 

A bill of materials of the Installation Drawing of the Carrier & Pretarget Tunnels is posted (Excel file) In order to print this document on an 8x11.5 paper, go to “Page Setup”, click on the “Page” tab, click on “Landscape”, then under “Scaling” click on “Adjust to 53%” (6 April 2004).

 

Magnets

 

Four types of magnets will be place inside the Carrier and Pre-Target tunnels:  quadrupoles (3Q120 and 3Q60), B2 dipoles, trim dipoles, and a 200 turn bump magnet.  Information about these magnets can be found at the NuMI Magnet Home Page. 

 

Meetings

 

Presentation from the Installation Meeting on June 19, 2003 is posted (pdf file)

 

Photos

 

Photos and model of installed magnets (16 December 2003)

 

Photos were taken of the carrier and pre-target tunnels on 25 April 2003.

·        Carrier tunnel

·        Carrier tunnel – drip ceiling supports

·        STA 4+46 – drip ceiling supports

·        Pre-target tunnel

·        Pre-target tunnel – drip ceiling supports

·        Pre-target tunnel – base of drip ceiling support

 

Photos were taken of the carrier and pre-target tunnels on 27 June 2003.

Carrier tunnel:

·        Photos of transition through CMU wall between carrier and pre-target tunnels (1, 2, 3, 4, 5, 6)

·        Photo of lowest point in tunnel ceiling

·        Photo of HVAC unit downstream of CMU wall at STA2+50

·        Photos of conduit & cable tray along length of carrier tunnel (1, 2, 3)

 

Pre-Target tunnel:

·        Downstream end of tunnel (1, 2)

·        General tunnel contents (3, 4)

 

Photos of empty Low Profile Cart test (4 November 2003)

·        Brake engaged – note twist in support bar (1, 2)

·        Cart being pulled up tunnel from under the hatch opening – cart is less than 1 foot away from fire wall (1, 2)

·        Cart pulled through Pre-Target Tunnel (1, 2, 3, 4)

·        Cart pulled through Carrier Tunnel

o       Just upstream of double doors

o       Upstream beam-side wheel is about ¾-inch above the floor

o       Cart is pushed closer to gutter to avoid tunnel wall

o       Cart is pushed even closer to gutter to clear surveyor’s control mark on tunnel wall, clearing mark by less than 1-inch

o       Cart close to HQ114 magnet location along beamline

o       Cart close to “Hobbitt Door”

o       Cart leg 21-inches from support leg on HVAC unit (cart needs to move 24-inches to move magnet to its final location)

Engineering Notes

 

MD-ENG-017:  NuMI Pre-Target Tunnel – Magnet Stands (16 Oct 2003, revised 20 July 2004)

Abstract/Summary:  In the NuMI Carrier Tunnel and Pre-Target Tunnel, there are seven (7) 3Q120 magnets, two (2) 3Q60 magnets, four (4) B2 dipole magnets, and one (1) 200 turn bump magnet.  The magnets rest on stand assemblies that are made up of three basic components:  the cradle, the adjuster and the base.  The cradle and adjuster designs are similar to the components used in the Main Injector magnet stands.  The magnet stand drawings are listed in the bill of materials for the NuMI Pre-Target Tunnel Installation drawing (PPD/Mechanical Department 8875.119-ME-427811).  This engineering note details the calculations of the allowable stresses and loads according to the AISC’s Allowable Stress Design (ASD) and expected deflections.

 

MD-ENG-028:  NuMI Pre-Target Tunnel – Trim Dipole Magnet Stands (26 Mar 2004)

Abstract/Summary:  In the NuMI Carrier Tunnel and Pre-Target Tunnel, there are nine (9) trim magnets (corrector magnets).  The magnets rest on stand assemblies that are made up of two basic components:  the adjuster and the base.  The magnet stand drawings are listed in the bill of materials for the NuMI Pre-Target Tunnel Installation drawing (PPD/Mechanical Department 8875.119-ME-427811).  This engineering note details the calculations of the allowable stresses and loads according to the AISC’s Allowable Stress Design (ASD) and expected deflections.

           

MD-ENG-029:  NuMI Winch System for NuMI Pre-Target Tunnels (9 Apr 2003)

Abstract/Summary:  The NuMI B2 magnet transport cart will be pulled up a 15% (8.5 degree) slope by a winch through the pre-target tunnel.  The cart (including the spreader) weighs 3300 pounds.  The B2 magnet weights 25,900 pounds.  The force that the winch must pull is calculated.  The winch and winch cable specifications are listed. 

 

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Last updated 9 November 2004

 

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