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Status of infrastructureStatus of infrastructure

MICE Collaboration Meeting, Frascati, June 26-29, 2005

Yury Ivanyushenkov

Applied Science Division,Engineering and Instrumentation Department

RAL

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• Layout

• Hydrogen system

• Shielding

• Support system

Scope

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MICE layout

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MICE phase I initial

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MICE phase I final

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Tchill

Pressuregauge

Non-return valveP P VP Vacuum pumpBursting diskPressure

relief valveValvePressureregulator

CoolantOut In

Test absorber assembly

Metal Hydride storage unit

(20m3 capacity)

Purge valve

0.5 bar

0.9 bar

H2 Detector

P

P

VP1

VP2

Purge valve

Chiller/Heater

Unit

1 bar

PP

0.5 bar

0.9 bar Helium supply

Hydrogen supply

High level vent

Buffer vessel

Vent outsideflame arrester

Extract hoodH2Detector

PP

Nitrogen supply

PP

PP

1 m3

Hydrogen zone 2

Vent manifold Vent manifold

P1

PV1

PV7

PV8

PV2

PV3

PV4

HV1

Fill valve

Tbed

HV2

HV3

P3

P

P2

PV6

High level vent

Non return valve

0.1 bar

Hydrogen system test rig

Mass spectrometer

M. F.M.

Mass flow meter

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MICE hydrogen system PID

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MICE hydrogen system layout: Principle

• Argon jacketing of pipework is proposed in outside the hood. Basic philosophy is shown below

Hood

MICE

Cabinet for hydride bed and pipework

H2sensorArgon Jacketing

Safety area

1m3

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MICE hydrogen system layout (2)

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• WP1 Initial design -> Internal safety review• WP2 Detailed design and procurement • WP3 Installation and commissioning • WP4 Test Programme

Hydrogen system R&D: Work packages

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Hydrogen R&D: Layout

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Hydrogen R&D: Layout (2)

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Hydrogen test cryostat: Concept

T H

T H

• Instrumentation mimics what we will need on the absorber for the control system and interlocks

• Heater will regulate temperature of cryocooler – need redundancy and interlock with compressor

• Dia.Reservoir =height=290mm

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Hydrogen Test Cryostat Outline

1120

Ø 580

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Hydrogen test cryostat

Condenser

LH2 dummy absorber

Level sensors

Cryocooler SRDK-4151.5 W @4.2K35/45 W @50K

Radiation shield

Hydrogen inlet and outlet

He inlet and outlet

Cu bottom plate with heat exchanger

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Hydrogen test cryostat (2)

Cu bottom plate with heat exchanger

Cartridge heaters

Finned top plateof condenser

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Outline Schedule•WP1 Initial design: May – August 05

with Review in September 05 •WP2 Detailed design and procurement: Aug 05 – Feb 06•WP3 Installation and commissioning: Jan – April 06•WP4 Test Programme: June – Oct 06

Hydrogen system R&D – Schedule

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Radiation shielding

• No changes in the layout • Paul is working toward a much more reasonable (and cost effective) shielding arrangement.

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Magnetic shielding

• No changes in the layout • Part of magnetic shielding wall will be installed and used as a support for hydrogen R&D test area platform.• Another round of magnetic modelling is required for a full MICE magnetic shielding once position of MICE in the hall is frozen.

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Support structure – Layout and sequences

Add spacer

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Support structure - Required rail positions

MICE Stage IV MICE Stage V

Rail positions of downstream detector for Stages IV & V will overlap with final stage VI rail positions

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Support structure – Super-module

Module to module joints to react forces in Z

CC/RF module with stiff support structure

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Support structure – Rail and Force transfer concept

Y

XZ

Magnetic force

Traverse in X on rail system to give location to +/- 2mmJack from rail and position in x-y-z to survey targets on vacuum vesselShim to blocking plates to locate in x-y-z and react forces

Module

Jacks

Rollers

Rails

Floor Plate

Y support location

Shim

Beam Axis

Survey Target

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Support structure – Rail-mounting concept

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Support structure – Force transfer concept - Y

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Support structure – Force transfer concept - Z

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Possible MICE rail system

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• Requirements/specification: - to move (all) MICE modules out the beam (to the side direction) for various MICE stages• Accuracy/tolerances: - along the beam +/- 1 mm - across the beam +/- 1 mm• Adjustment: - adjustment possibility is required.• Locking mechanism: - required.• Loads: - max load is 6.65 tonnes.• Force transfer function: - gravity force to the floor; - module-to-module axial force to the floor ?

MICE support structure - Specification

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Module Weight, kg

AFC module 1700

RF module 4636

Radiation shield 310

Tracker module 6650(including 1200 kg of magnetic shield)

MICE support structure - Module weights

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MICE support structure – Next steps• Revise support structure requirements/specs for full MICE - include and analyze requirements of access to every module ( collect information from all technical supervisors)

• Suggest support structure for Stage 2 (is it different from the one for complete MICE ?)

• Discuss revised version of support structure at RAL meeting