Beam Dump & Cooling
Introduction(Location, Access & Driving Parameter)

Components(Graphite, Iron, Aluminium)

Cooling System
LayoutInstallation
11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

1

Location & Access

2km

Beam Dump(Hadron Stop)

11/11/2003

500m

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons2

First Design

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons3

Driving Parameter
Energy Deposition

Choice Materials
Graphite, Iron, Aluminium,
Constraints:
Aluminium: T < 150⁰C
Graphite: T < 400⁰C …

Thermal FE-Calculations
For ultimate load case*, model with air gaps**:Need for2 cooling plates of 50kW each
11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons* 13.8 x1019 p.o.t./yr**4/2/0.5mm gaps

4Graphite & Iron
Graphite coregraphite
Thermal conductivity:˜160 W/(mK)Tolerances: ± 0.5 mm
Good surface quality

Iron dump
cast iron~400 blocks = ~1825 tons
Mostly recuperated (WANF)

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

5Cooling System
Cooling Module

Cast aluminium block with integratedstainless steel tubes (Øi=36mm, th=3.25mm)
11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

6

Cooling System
Cooling Plates
50kW each

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons7

Cooling System
Primary Heat Exchanger:
Easy access,Regular maintenance

TE80
AlcoveBeamDump

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons8

Cooling System
Connections to TE80 (Heat Exchanger)
Lateral connections Æ Accessibility
2x6 independent circuits Æ Reliability
Flexible tubes (metallic) in Beam Dump
Æ Work in the tunnel minimizedÆ Absorption of vibrations,
thermal dilations
Purely metallic connections
2 tubes to TE80
11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

9Cooling System
Manifold:
Valves & Flow-meters
Operation
Monitoring of circuit (TE80)
If pressure dropÆ As soon as access possible:

Visual inspection offlow indicators in Beam Dump
to locate faulty circuitÆ Close circuit

2 Tubes to TI8

Æ Signal detected (TE80)

Repair(when/if access Beam Dump possible)
11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons1012 Aluminum Cooling Modules

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

2 Tubes to TE80

26 Manual Valves,
13 Visual Flow Meters

26 Flexible Tubes

2 Flexible Tubes from Exit WindowCooling System

11

Layout
SideCooling
11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

12Upstream Wall
Air separation & Door Æ 1mm stainless steel sheet

Side11/11/2003

TopNBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

Front
13

Downstream Wall
Air separation, Radioprotection & DoorÆ 300mm concrete wallSide
11/11/2003Top
NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

Front
14

Installation

1875 tons, ~500 blocks
Installed between
15/07 - 01/09/2003

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

15Installation
Installation Sequence
Phase 1: Preparation & Iron “floor”
Phase 2: Iron Blocks
Phase 3: Iron andAluminium (1,2)
Phase 4: Graphite (1-5),
Aluminium (3-6) and Iron

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

16Installation

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

17InstallationProblem (encountered during phase 4)
Observed:

Measured:
Slope of Aluminium blocks (3,4) ~7.5%(tunnel=5.6%)

11/11/2003

Shims!

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

18Installation
Solution
1. Measure topology of iron “floor”
2. Calculate shim thicknesses tosimulate “good slope”
3. Place shims
4. Place aluminium modules
until smooth surface at 5.7%
(extra time needed: ~3 days)
11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

19Installation
Hadron Stop Installation
Completed 01/09/2003

11/11/2003

NBI 2003 - Beam Dump and Cooling
Presentation by Ans Pardons

20