BEAM STOPPERS FOR LINAC 4

Linac4 Beam Coordination Committee – Meeting 31

S. Cimmino/F. Loprete, EN-STI, Linac4 Design Status Report Meeting – Thursday 24/11/2011

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Beam Stopper General Presentation;

Thermal Analysis: First Results;

What’s next.

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

Overview

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S. Cimmino, EN-STI, Linac4 Beam Coordination Committee - Meeting 20

Beam Stoppers General Presentation

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Beam stoppers 160MeV

Maximum H- Current 40 mA

Pulse Length 400µs

Max Rep-Rate (1.1Hz)

Beam Energy 160 MeV

Beam parameters:

“A beam stopper is a mechanical safety device used to intercept a particle beam, to guarantee the personnel safety. (L. Bettazzi, C. Maglioni, EDMS xxx under definition)

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

The beam stopper 160 MeV has been designed considering a possible unification between all the beam stoppers from Linac to Ps.

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Stopper Position

Beam stopper 160MeV

Layout – L4T zone 3

“LINAC 4 ProjectL4T/L4Z Design Status

J.Humbert / B.Riffaudon behalf of EN-MME design team ”

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

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S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

Design

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Safety Requirements

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

Fail Safe Condition: Pneumatic Failure; Electrical Failure; Control Failure.

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Material and Dimensions

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

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S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

Thermal Analysis: First Results

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Energy Deposition

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

0 50 100 150 200 250-100

0

100

200

300

400

500

600

Energy Deposition

FlukaAnsys

Z [mm]

ED

[J/

cm

3*p

uls

e]

X=0;Y=0;

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Thermal Analysis

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

Maximum Temperature is ok

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S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31

Structural analysis;

Detailed design (Design Office);

Technical Specification for TL beam stopper.

What’s next

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Thanks

Cesare Maglioni;

Frederic Loprete;

S. Cimmino, EN-STI, Linac4 Beam Coordination Committee – Meeting 31