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
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).
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.
Presentation from the
Installation Meeting on June 19, 2003 is posted (pdf file)
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 – drip ceiling supports
·
STA 4+46 – drip ceiling supports
·
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 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)
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.
Links
Last updated 9 November 2004
