Detector Parallel Session Video Conference Fri 13/6 8:30 Grichine EMCal Simulation UpdateEMCal Simulation Update 09:00 Bonesini TOF UpdateTOF Update Radicioni Rates at TOF0Rates at TOF0 09:30 Gastaldi TPG Status and PlansTPG Status and Plans 10:00 Sato KEK Test Results/PlansKEK Test Results/Plans 10:30 Coffee 10:50 Barber SciFi Tracker: Progress in Design, Prototype, PlansSciFi Tracker: Progress in Design, Prototype, Plans 11:10 Sedgbeer SciFi Tracker: Software Status/PlansSciFi Tracker: Software Status/Plans 11:30 Summers Tracker Choice Ground Rules and Process 12:00 Discussion

1)Progress towards upgrade of the “downstream bug” downstream PID taylored to 300 MeV/c  eV T kin )  based on only existing old track files, so never adapted to 200 MeV/c  eV ) needs some serious rethink (by means of new track files !!!) 1000 muons throu G4MICE…. a MUST !!! ….. volunteer needed !!! 2) Short update from TOF ( B field tests, TOF 0 max rates …) NB TOF0-TOF1 may well be only 6 m apart (B. Palmer) 3) Major progress on both trackers !!!!!!!!!!!!!!!!!!!! congratulations to both teams next CM …. end of October ….. …… OK CORRAL ….. 4) Rules of the shoot-out (Summers & Gregoire) Introduction ….. and summary

1)Progress towards upgrade of the “downstream bug” first semirealistic study of end region (PID) at lower (200 Mev/c) limited, not G4MICE yet……. Grichine EMCal Simulation Update the belt (  tag)EMCal Simulation Update see slides the art of e/  separation gets different thinner slicing? ….. fully active detector? Need a G4MICE serious study …. PLEASE VOLUNTEER! 1000  ! a proper first goal (and boost) for our simulation software and effectiveness in detailed detector design including downstream Cerenkov the suspenders (e  tag) may prove embarassing, otherwise

2) Short update from TOF Sci+PMT tests in B field set up at INFN-Mi (Bonesini) up to 1 Tesla … 12 cm gap warm magnet results soon ….. NB good to keep at least TOF0 away … at 200 MeV/c TOF0-TOF1 may well be only 6 m apart TOF 0 max rates (Radicioni) up to 5 MHZ tolerable to DAQ lower limit certainly from PMT’s, answer needed

3) Major progress on TPG tracker !!!!!!!!!!! congratulations to the TPG team 09:30 Gastaldi TPG Status and Plans see Radicioni’s slidesTPG Status and Plans small GEM chamber prototype operational in Naples with final front electronics being equipped with a 10 cm field cage test learning chamber ….. may make it to LAB G big hopes …. tagged Co & Mn X-ray sources full size MICE end cap being built GEM amplification with hexaboard read-out with final front end electronics to be adapted to full HARP 1.5 m field cage in the CERN PS East Hall (painful resurrection) cosmic rays first … beam “traccino” mid September real MICE prototype ….. own 1 m field cage ready in 2004

3) Major progress on Sci-Fi tracker !!!!!!!!!!! congratulations to the Sci-Fi team 10:00 Sato KEK Test Results/PlansKEK Test Results/Plans lab tests … reducing photon MFP (.460 mm) … x-talk … several new fibers delivered for studies of MFP & much more 2 weeks of beam tests at KEK later this month 10:50 Barber SciFi Tracker: Progress in Design, Prototype, PlansSciFi Tracker: Progress in Design, Prototype, Plans prototypes of support of single stage of 3 fiber planes support of connectors AND connectors (7 fold multiplexing built in !!! ) final carbon fibers structure in September 11:10 Sedgbeer SciFi Tracker: Software Status/PlansSciFi Tracker: Software Status/Plans SW simulation & reconstruction -- most of the functionality required is in place Computing resources -- adequate resources available Manpower resources - losing Ed – will be replaced … but test beam commitment – plus some extra manpower for SW & Grid Aim to complete required SW studies by October

KEK Test Results / Plans Akira SATO Osaka University, Japan

contents Cross talk of SCSF78 Fiber optimization KEK plan Attenuation length Beam test

Cross talk for SCSF78 Experimental data can be explained assuming that mean free path of primary photon is 460  m. 1.0GeV/c  1.0GeV/c proton  /p ratio 300  m  0.5 p.e.0.8 p.e  m  1.2 p.e.1.6 p.e.0.75 dE/dx 1.8 MeV/cm 2.6 MeV/cm 0.7 Sci-Fi Primary photon 1.0GeV/c  1.0GeV/c proton 300  m  1.92 p.e.2.77 p.e. 500  m  2.92 p.e.4.21 p.e. 300  m  0.55 p.e.0.80 p.e. 500  m  1.20 p.e.1.72 p.e. Experimental data Expected # of p.e. with 0  m MFP Expected # of p.e. with 460  m MFP From last KEK beam test results

Optimization of 3HF fiber Alan estimated the mean-free path (MFP) for absorption by 3HF of the primary scintillation light from the primary dopant p-terphenyl (pT). The absorption can be expressed as –I/I o = 10 -(  cd)  : the molar extinction coeff. in (moles per liter-cm) -1 at wavelength c : the concentration in moles per liter d : the distance in cm Attenuation length for the primary dye emission via 3HF absorption : –50  m for 1dye+3HF(1500 ) D0 tracker –21  m for 1dye+3HF(3500) –Very short for 3HF(5000) w/o 1dye At high concentrations, 3HF acts like a primary dopant ie, its coupling the the fundamental PS excitation is quite strong.

KEK and Osaka Plan Scintillating fibers had been deriverd to Osaka Univ. June 3rd –Standard primary(pT) + 3HF(2500ppm) –Standard primary + 3HF(3500ppm) –Standard primary + 3HF(5000ppm) –3HF(5000ppm) only 0.35mm , round, multi-clad, s-type We are planing to study : –Attenuation length –Aging of bending fiber –Light yield (beam test) –Cross talk (beam test)

Attenuation length Measurement has just started. Cracks in fiber reduce light yield. Need some quality control preliminary

KEK beam test June 25th - July KEK  2 beam line Photon detector –Hamamatsu R7899 MOD Extended Green Photocathode 1 inch diameter 10 stage Head-on Type Prismatic Window Light yield Cross talk Sci-Fi PMT (R7899)

summary The most suitable fiber for MICE scifi tracker will be selected by KEK studies. Candidates : –Standard primary(pT) + 3HF(2500ppm) –Standard primary + 3HF(3500ppm) –Standard primary + 3HF(5000ppm) –3HF(5000ppm) only Attenuation length Aging Light yield Cross talk –Beam test : June 25th - July KEK-PS  2

D.Websdale - Particle Phyisics with Advanced Study: Plans for Sci-Fi Prototyping. Contents:- Mechanical Layout of Sci-Fi Design of the Fibre Optic Connectors Design Issues Still to be Addressed Future Plans This work is being undertaken by Imperial College and Liverpool University physics Department (Peter Cooke), Fermilab (Alan Bross), KEK (Koji Yoshimura), Osaka (Yoshi Kuno, Akira Sato)

Mechanical Layout of Sci-Fi A Reminder of the Layout of the 5 Stages ?

Reasons to build the Sci-Fi Prototype The aims of the Single stage prototype will be to:- Prove the feasibility of the design Solve any production problems Try to develop more efficient (and cheaper if possible) construction techniques Ensure that all stages can be made exactly the same Test the efficiency of the light guide connectors Check the spatial repeatability of the support system To create a working detector to allow full system functionality to be developed

The Original Model

Mechanical Layout of Sci-Fi Prototype Single Stage Layout

Mechanical Layout of Sci-Fi Connector Plate

Mechanical Layout of Sci-Fi Virtual Reality

Mechanical Layout of Sci-Fi Reality

Design of the Fibre Optic Connectors The fibre optic connector design is governed by the following factors :- Multiplexing Layout of Sci-Fi ‘Stringing’ feasibility of the Connectors Cost, ease of manufacture and delivery Available space

Design of the Fibre Optic Connectors The 1 st Iteration… This had  holes which where so close that it is impossible to mould not to mention that they would need to have the fibres threaded in the correct order.

Design of the Fibre Optic Connectors The 2nd Iteration… This has a diagonal stagger to maximise the distance between the holes (it was still not enough) AND STILL 126 separate 350  fibres Need to be threaded per connector!!!

Design of the Fibre Optic Connectors The 3rd Iteration… This has a diagonal stagger to maximise the distance between the holes but more important is that it multiplexes at the stage. This means that the fibres will be threaded in bundles of 7 from the Fibre plane and all subsequent units will have 18 1mmØ fibres.

Layout of the connectors in the space available Detail of Connector Plate

Design of the Single Stage The aim, as already stated, is to have all the stages the same. This means that there is only one development programme. Further advantages are:- that the amount of spares can be minimum All stages are interchangeable should it be necessary to fit a less efficient stage in a less critical position Production will be easier

Issues Needing to be Addressed Detailed design of tooling for the manufacture and assembly of the stages How to lay down the fibres to a known accuracy Light transmission of the connectors Multiplexing (is this the correct approach) Fixing and sealing into position …………………

Future (short term) Plans To define and build the prototype stage whilst addressing the manufacturing problems To design and develop the tooling for the carbon-fibre structures To further develop the fibre-optic connector To develop assembly and installation procedures ???

Schedule

SciFi Tracker – SW Status & Plans General SW status –Simulation & Reconstruction Performance Studies & Plans Test Beam Resources Summary …. Plans concentrate on now till October 2003 Julia Sedgbeer for Ed McKigney Imperial College London

SciFi Engineering representation – 5 stations a) Ribbon doublet structure b) u-v-t fibre plan

Questions from Review Panel Fibre tracker –It seems essential to perform a full simulation of a tracker with five planes, including nominal inefficiency and assessment of the redundancy by simulation of the loss of readout— dead fibres. The impact of noise and misalignment should also be assessed. What is the status of this simulation? –Because of the cost saving by multiplexing, it is important to repeat the simulation in a realistically multiplexed arrangement. –Will the main alignment be derived from “straight through” muons? –Some documented information on the performance of the fibre tracker in the MUSCAT experiment would be useful.

General SW Status featurestatus‘nominal’SciFi simulation ‘ideal’ SciFi simulation 5 stations Electronic noise 0 (> 2 p.e.)0 Dead Channels ~implemented 0.25%0 Multiplexing 7  1 none Misalignment displacements rotations  00 Simulation (Ed Mckigney)

General SW Status Electronic Noise –Experience of VLPC’s at DØ – no noise above 2 p.e. Cross talk –Experience at DØ – no cross talk – verified by HW tests Dead channels –Experience at DØ – 77,000 channels –200 compromised fibre channels – 0.25% –190 compromised VLPC channels – 0.25% Alignment –Experience at DØ – 835 μm fibres –Precision of fibre mounting ~35-40 μm

DØ fibre tracker - VLPC performance (A.Bross) VLPC (Visible Light Photon Counter) – Cryogenic 9K VLPC  HISTE VI –High QE  80% –Low noise <5X10 4 Hz  1.0 pe) –High Rate capability >40 MHz –High production yield  70%

General SW Status Reconstruction –space point algorithm – require hits in 3 views of 1 station (triplet) –track finder requires 4/5 or 5/5 triplet points –track fit includes energy loss –tracking efficiency & purity already v. good (Ed Mckigney, Oct 2002, Berkeley) Grid –Job submission to Grid exists (IC - EDG) – being automated (web interface – K.Georgiou) RF background simulation –So far used uniform distribution parallel to axis – vary rates –Improved model being implemented (Yagmur Torun )

Performance studies & plans study‘ideal’ SciFi ‘nominal’ SciFi – (MUX & dead chn) except study params RF bkg MUX Dead Channels Misalignment RF & dead chn. Done (Ed Mckigney) Important Lower priorty

RF bkg studies - p t resolution Distributions from the Berkeley meeting

MUX studies - p t resolution MUX 7  1 reduces p t resolution by ~2

Performance studies & plans Reconstruction plans – low priority Space points –allow points made from hits in 2 out of 3 views in a station (doublets) Track finder –allow limited number of double points per track Grid plans – priority? – need input from collab. –Extend grid access to MICE collaboration

Test Beam Plan.. Single station prototype Cosmic ray test FNAL – September 2003 Determine: –Light yield at VLPC – sufficient to allow noise rejection? –Cross talk – small? (Also demonstrate multiplexing and precision of fabrication) …. compare results with simulation

Resources Computing –Some access to Grid farms in IC/HEP and LeSC –Adequate for studies to be done this summer Manpower –Ed Mckigney replacement: – shortlist - expect appointment in July - test beam commitment –SW: A.Tapper (IC), A.Khan (Edinburgh), J.Sedgbeer (IC), P.Kyberd (Brunel), grad student from Oct. (IC). –Grid: K.Georgiou (IC), D.Colling(IC)

Summary SW simulation & reconstruction –most of the functionality required is in place Computing resources –adequate resources available Manpower resources –losing Ed – will be replaced … but test beam commitment –plus some extra manpower for SW & Grid Aim to complete required SW studies by October

3) Major progress on Sci-Fi tracker !!!!!!!!!!! congratulations to the Sci-Fi team 10:00 Sato KEK Test Results/PlansKEK Test Results/Plans lab tests … reducing photon MFP (.460 mm) … x-talk … several new fibers delivered for studies of MFP & much more 2 weeks of beam tests at KEK later this month 10:50 Barber SciFi Tracker: Progress in Design, Prototype, PlansSciFi Tracker: Progress in Design, Prototype, Plans prototypes of support of single stage of 3 fiber planes support of connectors AND connectors (7 fold multiplexing built in !!! ) final carbon fibers structure in September 11:10 Sedgbeer SciFi Tracker: Software Status/PlansSciFi Tracker: Software Status/Plans SW simulation & reconstruction -- most of the functionality required is in place Computing resources -- adequate resources available Manpower resources - losing Ed – will be replaced … but test beam commitment – plus some extra manpower for SW & Grid Aim to complete required SW studies by October

11:30 Summers Tracker Choice Ground Rules and Process draft set of rules defined by Don & Ghislain common technical criteria cost and schedule criteria Sci Fi specific criteria TPG specific criteria To be discussed & agreed by both parties in forthcoming phoneconference(s) well before end of October CM Forthcoming videoconference(s) will monitor progress of both very closely and frequently

1)Progress towards upgrade of the “downstream bug” downstream PID taylored to 300 MeV/c  eV T kin )  based on only existing old track files, so never adapted to 200 MeV/c  eV ) needs some serious rethink (by means of new track files !!!) 1000 muons throu G4MICE…. a MUST !!! ….. volunteer needed !!! 2) Short update from TOF ( B field tests, TOF 0 max rates …) NB TOF0-TOF1 may well be only 6 m apart (B. Palmer) 3) Major progress on both trackers !!!!!!!!!!!!!!!!!!!! congratulations to both teams next CM …. end of October ….. …… OK CORRAL ….. 4) Rules of the shoot-out (Summers & Gregoire) Introduction ….. and summary