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MICE Status

UKNF Meeting3rd May 2006Malcolm Ellis

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Introduction

Review of a range of MICE activities. Areas touched on are:

Beamline (P. Drumm) Target (C. Booth) Tracker Review:

Mechanical (G. Barber and T. Matsushita) KEK Analysis (H. Sakamoto and A. Fish) QA (P. Kyberd) Cryo (A. Bross) Electronics (A. Bross)

Muon Test Area (Fermilab) 201 MHz cavity at MTA (LBNL) CKOV I (UCL & Mississippi) DAQ (J.S. Graulich) Frascati Test Beam plans (J.S. Graulich)

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BeamlineT Target Sheffield

A Pion Capture ISIS

B Decay Solenoid EID

C Muon Transport Channel

Liverpool

D Diffuser Oxford

E Support Rails Liverpool?

SupportRails

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Beamline Schedule

ISIS Shutdown First indication during Osaka meeting Now confirmed:

Starts: 22nd December 2006 Ends: 31st August 2007

Additional shutdown: Mid Oct-mid November 2006 Probably ditto in 2007

Within schedule – little slack Completion of the hall work:

waiting for feedback of key information Stairs Mezzanine (Hydrogen System & Access)

Platform (support for MICE) Window for Solenoid Commissioning with Cryogenics

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Target

Focus of recent work has been assembly tests at RAL last week.

Review of components

Results of tests

Preliminary follow-up plans

Components: Stator body Ceramic tube Glass readout tube Target shuttle Ceramic bearings Electronics Frame, jack, bellows, gate-valve

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Target Assembly Test 24th-28th April

First time many parts came together: Stator first connected to electronics 20th

Glass readout tube assembled 21st

Target shuttle finished morning of 24th

Some RAL parts and flanges not previously assembled.

Still digesting results of last week! Despite problems, a lot was learned.

Practical details of assembly for first time. Improved design of major components. No proper vacuum tests. No reliability or vibration tests. Review (with ISIS) 16th May. Will repeat assembly in hall. Unlikely to install in ISIS for June – perform thorough off-

line checks for October access.

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Tracker Mechanical

Station Assembly: Receive doublet-layers from FNAL Visual inspection of the doublet-layers for any damage

caused in transit Align the doublet-layers on a vacuum chuck Bundle seven fibres with rubber sleeves (QA) Thread the bundle into a station connector (QA) Put the vacuum chuck on an assembly jig Fix a carbon-fibre station to the assembly jig Glue the doublet-layers to carbon-fibre station Attach doublet-layers connectors to the carbon-fibre

station Cut the fibres Pot the fibres Polish the fibres

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Tracker Installation

Tracker installation procedurepresented at Tracker Review

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KEK Analysis

Light yield is estimated by fitting the peak with gaussian.

Measured light yield is similar to the result of cosmic-ray test.

Station B A C D

3HF Concentration (ppm) 5000 5000 mixture 2500

Gain of cassette Low Low High High

Measured light yield (p.e.) 8.1 10.3 8.7 5.1

Data from Cosmic-ray test 8.5 9.1 8.7 n/a

This peak is caused This peak is caused by ADC saturation.by ADC saturation.

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Comparison between KEK and Cosmic Ray Analyses

KEK beam test was performed in the fall of 2006. Stability of VLPC are checked.

Pedestal peak is within 1 count, Pedestal width is within 1-2%, Gain is stable within 2%, and Noise rate is within 5-8%.

Light yield and efficiency are studied with 3GeV/c pion beam without B-Field.

Station B A C D

3HF Concentration (ppm) 5000 5000 mixture 2500

Gain of cassette Low Low High High

Measured light yield (p.e.) 8.1 10.3 8.7 5.1

Light yield from Cosmic-ray test 8.5 9.1 8.7 n/a

Measured efficiency (%) 98.0 98.8 99.5 96.6

Expected efficiency (%) 99.92 99.99 100 99.97

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Tracker QA

Plane held on vacuum chuck

Scanning system:

Scanning table

LED and collimation and focussing system

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Bundling QA

Bundle fibres up into sevens – do about 10 bundles.

Hold the fibres together with a rubber sleeve (already used to make the prototype)

For these pictures 370nm was used throughout

7 fibres

Place the bundles in a “comb” to hold them together and in place

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Fibre Imaging

Once the station connectors have been cut and polished.

At this stage we measure light output.

We will also make this measurement on the old stations which have been disassembled – this will allow us to validate the UV measurements against the test beam results

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Effect of UV on Fibres

Hitachi U4100 sample compartment

Measure effect of UV irradiation on the fibres.

Using high performance photometer

High precision fibre launcher

Compartment modified to take optical rails and other components

Detectors & integrating sphereAperture

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Tracker Cryo

MICE VLPC Cryo 2 – 1024 Ch VLPC

Cassettes in each system

Two systems per tracker- 4 Total for MICE + 1 Test Stand

Sumitomo GM Cryocooler

Cold-end operating point at approximately 7K

Cassette Gas system Lid Heater and temp

control circuitry Vacuum pump

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Prototype Cryostat

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Cryostat Performance

Typical Cooldown

Cryostat cool down curve

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Temperature Control

Two stage Control Heat applied to 2nd

stage of cryo-cooler (7K)

Commercial Oxford temperature controller

Heaters in cassette (1 per module) control to final set point (9K)

System controls to better than 10 mK

Spec – 50 mK However running with

50Hz power (KEK), left cassette heaters were barely on – almost no control from cassette

Thermal link

1 Count=1 mK

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Cryo Status & Plans

The Prototype MICE VLPC cryo-system has been operated successfully for many months both at Fermilab and KEK

All design specs have been met except for a left-right temperature asymmetry

Thermal link design has been modified This will be tested as soon as the Fermilab shutdown is over

(June 06)

Cryo-coolers have been delivered Cryostat parts are on order – expected delivery is

mid-June 06. All systems will be assembled, tested, and

commissioned by the end of the calendar year

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AFEIIt Status

The AFE IIt pre-production boards (15) have been tested to D0 spec

The first boards came up very quickly In about 1 hour No green wires!

TriPt testing is done Yield is about 80% More than enough chips for D0 + MICE + Spares for both

experiments Plus second pass could yield more

Production Order released April 18th About 14 week lead for delivery of all boards

But many will arrive earlier The critical issue for MICE is MICE-specific firmware

development for AFE IIt NOT a Trivial amount of work

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AFEIIt Test Stands

The MICE IIT group has assembled an AFE test stand and will be responsible for testing left hand production boards

Part of Negotiated agreement that led to D0’s donation of AFE IIt boards to MICE

In Addition an AFE IIt test stand has been assembled at RAL

Board maintenance Firmware development

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Muon Test Area Complex

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201 MHZ Cavity at the MTA

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Results from Preliminary Test

Conditioning started in late February 2006 with Flat copper windows (plates) with Ti-N coatings RF diagnostics Good vacuum ~ high 10-9 Torr

Without an external magnetic field, the cavity conditioned very quietly and quickly to reach ~ 16 MV/m

Limited by available RF power. Test plan being developed:

External magnetic fields Achievable gradients vs magnetic field Curved Be windows.

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CKOVI

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Sr90 Source

reflector cone

aerogel

trigger

8” pmt

Sr90

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CKOVI Road Map

Summer ‘06 = 1 @ FNAL1x1x1 modulewhite reflectorMeasure pe yields

ModelRayleigh Scattering

Scattering vs Absorption~ 0

Transmission vs Aperture 3x3 or 4x4

Spring ‘07Aerogel purchaseBegin Assembly

Fall- 06Mechanical fabrication Reflectors/Cones

CKV01 Summer ‘07

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DAQ & Frascati Test Beam

Preparation for the test of PID detector components and potential front end electronics at a test beam at Frascati in the summer.

Stand alone DAQ is being built for this (not reusing UniDAQ system developed for KEK tests).

Work being done at University of Geneva. Stand alone, local DAQ

DAQ Reduced to minimum:Local Start/Stop of Runs (no remote Run Control -> no DAQ framework,

no event building)Write data on local DiskReadout particle per particleNo interrupts

VME-PCI interface: CAEN V2718 only Limited number of FEE modules supported

TDC V1290 QDC V972

Only 2 Event types: Particle Event Calibration Event

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Status (19th April 2006)

Manpower: J.S. Graulich and 1 undergraduate student

Software for V2718: 80% done All fundamentals are done:

Read and Write in A32/D32,D16Read in BLT32, BLT64Basic I/O Register (2 Inputs, 5 Outputs)

Software for V1290: 80% done Only tested with V1190, should be easily transported to

V1290 Not fully commissioned yet

Software for V792: 40% done Work in progress

Software for run control: 25% done Working on User interface

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First Results & TBD

Readout rate of V1190 27 Mbytes/sec in BLT64

-> 5 ms to read the full V1190 buffer memory(Readout of the tracker would require at least 40 Mbytes/sec… already

obtained with BIT3 interface -> we might have to deal with 2 different interface. No impact for BTF)

I need some inputs Define needs for calibration Define needs for online monitoring Define needs for other FEE modules

Tests of QDC FEE options will start in background Organize transport of my PC…

When is the test beam ?