Tracker Summary

M. Yoshida (Osaka Univ.) MICE meeting@Berkeley 2005.Feb.12

th

Tracker MICE Note

• The full version of Tracker MICE note released – http://www.hep.ph.ic.ac.uk/~longkr/MICE/Meetings/Tr acker-volume/ • Design / Construction of the first prototype of SciFi tracker is described • The result from cosmic-ray test at D0 test-stand is reported • The reconstruction tools are explained • WBS

Talks on the scifi tracker

• Parallel tracker session on Wed. is focused on the KEK beam test scheduled in May and later.

• Time-of-flight counters and ACC is newly developed, and tested at KEK-PS secondary beam line • Status of the tracker / waveguide fabrication and electronics/DAQ work is reported • Simulation work on the beam test has been started • On the second day, design and preparation for the full tracker is reviewed.

• In the plenary session on Fri., Malcolm showed a excellent progress on emittance measurement with the tracker • Efforts on the KEK beam test is summarized in the following slides.

Sci Fi Performance

Malcolm Ellis MICE Collaboration Meeting Feburary 11 th 2005

Uncorrected 4D Emittance

Corrected 4D Emittance

Bias vs Resolution

KEK beam test

• Test for the SciFi tracker with 1T solenoid magnetic field • p/ p / m /e test beam line in KEK-PS • Slow extraction from the internal target in 2-sec flat top of a 4-sec spill • Add 4 th station to the prototype tracker • Newly developed Cryostat with Cryocooler – 2 VLPC cassettes embeded

Phase Ⅰ setup

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Apr 2005 , KEK pi2

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5x5 hodoscpe

Phase Ⅱ setup (Oct 2005 , KEK pi2)

・ μmomentum ： 300~400MeV /c ・ low beam rate ・ but , defuser makes many condition of beam

TOF and ACC performance test & low momentum beam rate measurement for KEK beam test

Atsushi Horikoshi (Osaka Univ.) Ken’ichi Sakai (Univ. of Tokyo)

TOF design ・ very long light guide ⇒ to avoide strong magnetic field ・ PMT:R6504S fine mesh PMT (used by BESS , 19DY , strong resistance of magnetic field) 400 392 unit : mm 133 80 20

TOF construction scintillator & light guide is wrapped by Aluminized Mylar(50μmthin) scintillator EJ230(BC420) EJ204(BC404)

position dependence of resolution (preliminary) tof2 120 100 80 -20 60 40 good resolution~ 50ps @all pos 20 -10 0 0 pos (cm) 10 20 tof2r tof2l weighted_mean

Measurement on low momentum beam

Muons come in ~0.3Hz or more at 0.3GeV/c  can use for Phase-II

ACC light yield for pi/mu/e

0.5Gev/c 0.6Gev/c

e p m Time of flight

Preparation for KEK beam test

• SciFi tracker (G. Barber) • Waveguide (M. Yoshida) • Electronics (P. Rubinov) • Cryostat (R. Rucinski) • DAQ (M. Yoshida) • Simulation (K. Yonehara)

Prototype Layout

All of the components that make the space frame assemblies have been or are in the process of being manufactured.

There is still detail design to do to complete the assembly a list of outstanding items is on the next slide G.Barber KEK Test Beam Update, Berkeley 9 Feb 2005

Station Progress The 4 th station is now under construction. The layout has a total of 30 connectors, 10 per view. Each connector has 22 holes instead of the previous 18 but all of these are not used in every connector. All 3 planes are glued and the ‘connectorisation’ is under way and will be finished by the end of this week. It will then undergo extensive checking before being potted.

G.Barber KEK Test Beam Update, Berkeley 9 Feb 2005

Space Frame

Components All of the components that make the space frame assemblies have been or are in the process of being manufactured.

Tooling The jigs that align the space frames are all manufactured.

G.Barber KEK Test Beam Update, Berkeley 9 Feb 2005 One further development?

KEK Test Beam – Tracker Progress

To do list Final detail for the outer casing including the brackets to fix the assembly during transport and into the magnet.

The modification that will allow the original prototype stations to be married to the new space frames A new patch panel to be made or the existing one modified.

The space frames to be assembled Polishing of the 4 th station G.Barber KEK Test Beam Update, Berkeley 9 Feb 2005 27

VLPC Cryo Status Cryo-Cooler Version

Preliminary fit up - good

Status Summary

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Real assembly should start this week.

Many miscellaneous parts ordered and most here. (o rings, bolts, cryo grease, fittings, copper strips) Compressor for Cryo cooler wired up. Extending control cables.

Run Cryo cooler only – week of 2/21?

Cool cassettes – week of 2/28 or later?

Ship in March

DAQ for the KEK beam test

• Standalone DAQ system for VLPC • Standalone operation of Cryostat • Readout TOF counters and the other.

– CAMAC ADC/TDC • Readout AFEII on VLPC cassette – In KEK beam test, ~1k particles / spill – MICE beam ~600 muons / 850 usec – Existing system used for cosmic-ray test is rather slow ~40 events / pulse – Need memory module to store data in MICE situation with fast LVDS data links

DAQ System for KEK beam test

Linux PC PCI-VME (SBS Bit3) 1553 SASeq #1 SASeq #2 Slow Control Trigger Control 6 CAMAC-VME LVDS-FIFO #1 LVDS-FIFO # ２ LVDS-FIFO# ３ LVDS-FIFO # ４ 4x8bit = 32 bit / board 4 4 4 4 AFE II (L) 8x64 ch VLPC Cassette #1 1024 ch AFE II (R) 8x64 ch AFE II (L) 8x64 ch VLPC Cassette #2 1024 ch AFE II (R) 8x64 ch VLPC Cryostat Serialized ADC DATA CAMAC ADC/TDC

An idea of the DAQ architecture

MICE Control Tracker Control Tracker Slow Ctrl MICE Builder Tracker Builder 8MBytes/spill Tracker Collector Upstream 4MBytes/spill 4kBytes/event MICE Storage PID Builder Beam Builder Tracker Collector Downstream Cryosat Ctrl/Monitor Upstream Tracker 4096ch 4kBytes/event Downstream Tracker

AFEII prototypes

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First AFEII prototype is now on the cryostat and taking data.

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Next 4 slides show the AFEI problems that AFEII is designed to solve:

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SVX saturation.

SVX tick to tick ped variation.

DISCR to SVX data cross talk.

AFEII proto: Results

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Discr to ADC xtalk: it is impossible to make a plot like this with AFEI

Plot from AFEII with 30% discr occupancy.

Compare to AFEI with 32% discr occupancy many chan…

LVSB Board VME LVDS SERDES Buffer (Serializer-Deserializer)

VME LVDS SERDES Buffer (VLSB)

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The D0/MICE VME64 LVDS SERDES Buffer (D0 VLSB) is a

VME64 single wide 6U module SERDES (SERializer DESerializer)

It can be used for Read out and testing the AFEII boards. The module is a custom LVDS SERDES Buffer with 4 LVDS inputs channels and can be operated stand-alone with minimal additional hardware.

The design allows system expansion to multiple modules.

A D0 VLSB module can receive/generate trigger signals over two Lemo connectors on the module front panel.

A normal test system configuration consist of a VME 64 subrack where slot 1 is occupied by a VME subrack controller and the D0 VLSB cards will occupy one or more of the remaining slots.

VME LVDS SERDES Buffer (VLSB)

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The Boards (6) are now complete and ready for test and integration into the MICE DAQ system (KEK and final system if we choose to do so)

Simulation for KEK beam test

K. Yonehara IIT

Present status

• A field map for spectrometer was included.

• The spectrometer was tilted.

• Beam tracks were extracted.

All above items were presented in the last MICE collaboration meeting at RAL.

K. Long, 1 May, 2020

Discussion

– Really action items in preparation for KEK tracker meeting – NEXT tracker meeting: KEK: 29 – 31Mar05

Issues/action items:

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Layout/mechanical Geof

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Layout of area, including position of VLPC cryostat and clear-fibre run

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General layout and support

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Transfer alignment marks to can

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Default tracker specification

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Station order: 3, 2, 2, 3 Katsuya

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Spacing: 150 mm, 250 mm, 550 mm

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Issue is to put it in the simulation and verify that performance is OK Plan for ‘fifth’ station

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Single fibre readout … how best to implement

Issues/action items continued:

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Electronics:

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Local ground for VLPCs at KEK AFE backplane(s)

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System test at FNAL

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Paul lead but all must seek to contribute!

Mil 1553 modules Koji Paul Paul Paul

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Helium gas for VLPC cryostat at KEK Koji

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Vacuum pump for evacuating VLPCs prior to back filling with He at KEK Koji

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AFE power supplies:

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Check operation at 50 Hz Paul

Issues/action items continued:

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Trigger counters:

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Specification

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Fabrication

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Trigger/event number Koji FNAL Makoto

Actions towards finalisation of tracker design

• To be reviewed in the KEK tracker meeting in 29-31 March • Mechanical design – Detailed design of the support mechanism inside bore – Magnetic field monitoring – He-filled bore – diffuser – Detailed layout inside/ outside • Cylinder / VLPC position / external fiber run – etc… • Electronics/DAQ – Triggering / Event numbering scheme – Triggering by tracker hit?

Summary

• SciFi tracker group is aiming to test the prototype at KEK to check the fabrication procedure and the performance.

• Great efforts on the preparation is on-going.

• All the equipment will be delivered to KEK in March • Tracker workshop will be held at KEK on 29-31 of March, and hope to initiate the operation of the system.