Beam Dump & Cooling Beam Dump & Cooling Introduction - - PowerPoint PPT Presentation

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11/ 11/ 2003 NBI 2003 - Beam Dump and Cooling Present at ion by Ans Pardons

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Beam Dump & Cooling Beam Dump & Cooling

Introduction

(Location, Access & Driving Parameter)

Components

(Graphite, Iron, Aluminium)

Cooling System Layout Installation

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11/ 11/ 2003 NBI 2003 - Beam Dump and Cooling Present at ion by Ans Pardons

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Location & Access Location & Access

B eam Dum p ( H adr

• n

S top) 2km 50 m

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11/ 11/ 2003 NBI 2003 - Beam Dump and Cooling Present at ion by Ans Pardons

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First Design First Design

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Driving Parameter Driving Parameter

Ener gy Deposi ti

• n

Ener gy Deposi ti

• n

C onstr ai nts: C onstr ai nts: Al um i ni um : T < 150 ⁰C G r aphi te: T < 40 ⁰C … C hoi ce M ater i al s C hoi ce M ater i al s G r aphi te, I r

• n,

Al um i ni um , Ther m al FE Ther m al FE-

• C al

cul ati

• ns

C al cul ati

• ns

For ul ti m ate l

• ad

case* , m odel wi th ai r gaps* * : Need f

• r

2 cool i ng pl ates

• f

50 kW each

* 13.

8 x10

19 p.

• .

t. /yr **4/2/0.5mm gaps

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Graphite & Iron Graphite & Iron

G r aphi te cor e

gr aphi te Ther m al conducti vi ty: ̃160 W /( m K) Tol er ances: ± 0.5 mm G ood sur f ace qual i ty

I r

• n

dum p

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

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Cooling System Cooling System

Cast aluminium block with integrated stainless steel tubes (Øi=36mm, th=3.25mm)

C ool i ng M odul e

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Cooling System Cooling System

C ool i ng Pl ates 50 kW each

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11/ 11/ 2003 NBI 2003 - Beam Dump and Cooling Present at ion by Ans Pardons

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Cooling System Cooling System

Pr i m ar y H eat Exchanger :

Easy access, Regul ar m ai ntenance

B eam Dum p TE8 Al cove

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11/ 11/ 2003 NBI 2003 - Beam Dump and Cooling Present at ion by Ans Pardons

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Cooling System Cooling System

C onnecti

• ns

to TE8

( H eat Exchanger ) Later al connecti

• ns

Accessi bi l i ty 2x6 i ndependent ci r cui ts Rel i abi l i ty Fl exi bl e tubes ( m etal l i c)i n B eam Dum p W or k i n the tunnel m i ni m i zed Absor pti

• n
• f

vi br ati

• ns,

ther m al di l ati

• ns

Pur el y m etal l i c connecti

• ns

2 tubes to TE8

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Cooling System Cooling System

M ani f

• l

d: Val ves & Fl

• w-m eter

s

Monitoring of circuit (TE80) If pressure drop

Signal detected (TE80) As soon as access possible:

Visual inspection of flow indicators in Beam Dump to locate faulty circuit

Close circuit

Repair

(when/if access Beam Dump possible) 2 Tubes to TI8

O per ati

• n

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11/ 11/ 2003 NBI 2003 - Beam Dump and Cooling Present at ion by Ans Pardons

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Cooling System Cooling System

12 Aluminum Cooling Modules 26 Manual Valves, 13 Visual Flow Meters

26 Flexible Tubes 2 Tubes to TE80 2 Flexible Tubes from Exit Window

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11/ 11/ 2003 NBI 2003 - Beam Dump and Cooling Present at ion by Ans Pardons

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Layout Layout

Side Cooling

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Upstream Wall Upstream Wall

Air separation & Door 1mm stainless steel sheet

Side Top Front

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Downstream Wall Downstream Wall

Air separation, Radioprotection & Door 300mm concrete wall

Side Top Front

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Installation Installation

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

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Installation Installation

Installation Sequence

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

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Installation Installation

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Installation Installation

Problem (encountered during phase 4)

Shims!

Observed:

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

Measured:

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Installation Installation

Solution

• 1. Measure topology of iron “floor”
• 2. Calculate shim thicknesses to

simulate “good slope”

• 4. Place aluminium modules

until smooth surface at 5.7% (extra time needed: ~3 days)

• 3. Place shims

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Installation Installation

Hadron Stop Installation Completed 01/09/2003