emr status
DESCRIPTION
EMR Status. Jean-Sebastien Graulich, Geneva. Introduction News Detector Design Simulations Responsibilities Plan. Introduction. e +. µ +. EMR: Electron Muon Ranger Aka EMCal/SW See my presentation at CM23 for general introduction - PowerPoint PPT PresentationTRANSCRIPT
MICE VC March 2009
Jean-Sebastien Graulich Slide 1
EMR StatusEMR Status
o Introduction
o News
o Detector Design
o Simulations
o Responsibilities
o Plan
Jean-Sebastien Graulich, Geneva
MICE VC March 2009
Jean-Sebastien Graulich Slide 2
IntroductionIntroduction
EMR: Electron Muon RangerEMR: Electron Muon Ranger Aka EMCal/SW
See my presentation at CM23 for general See my presentation at CM23 for general introductionintroduction
http://mice.iit.edu/cm/cm23/agenda/cm23_graulich_emrissues.ppt
Slide 2
ee++
µµ++
MICE VC March 2009
Jean-Sebastien Graulich Slide 3
NewsNews
INFN didn’t approve this project Even though MICE has been supported
Gianrossano withdrew Construction responsibility has been
transefered to University of Geneva: Franck Cadoux http://dpnc.unige.ch/photosmembres/cadoux.html
The COMO group (Milano) is still interested in developing the Front-end electronics
MICE VC March 2009
Jean-Sebastien Graulich Slide 4
Detector DesignDetector Design
Latest design used triangular shape (a la Latest design used triangular shape (a la Minerva)Minerva)
Base: 33mm, height:17 mm (nominal), Length: ~ 1 m
59 bars per layer 40 layers Total thickness: 680 mm
MICE CM January 2009 Jean-Sébastien Graulich Slide 4
Total: 2360 channels
MICE VC March 2009
Jean-Sebastien Graulich Slide 5
Detector Design
We have reconsidered: Use of MultiAnode PMTs <-> Silicon PMT
Conclusion: Only the convention MAPM solution is compatible with a delivery in spring 2010
Use of Last dynode signal for charge measurement in FADC (layer by layer)
Conclusion: the poor signal quality makes this solution too risky. The bars have fibers coming out from both sides:
Side A : Individual signals to digital electronicsSide B : Fibers bunched per layer
-> 1” conventional PMT ->
Analog electronics
Mechanical Assembly Conclusion: Still under discussion
Number of Layers Need simulation
MICE VC March 2009
Jean-Sebastien Graulich Slide 6
Mechanical Assembly
Franck Cadoux, Mechanical Engineer, Geneva, is in charge
A prototype is needed A visit to Trieste is scheduled for next week Brainstorming has started and new ideas
will be discussed Individual bar fixation is considered As opposed to clamped plans proposed by Trieste
earlier
Fiber gluing to be outsourced Main worry is QA of fiber
connections to MAPMT
MICE VC March 2009
Jean-Sebastien Graulich Slide 7
SimulationsSimulations
Aim atAim at Validate the total length (number of layers)Validate the total length (number of layers) Estimate the resolution in Estimate the resolution in PPzz obtained obtained from the range from the range
measurementmeasurement At a later stage, optimize PID…At a later stage, optimize PID…
Run by Vassil VerguilovRun by Vassil Verguilov Muons starting before TOF2, KL includedMuons starting before TOF2, KL included Parallel beam, small beam spotParallel beam, small beam spot Flat initial momentum distributionFlat initial momentum distribution No X-Y segmentation yetNo X-Y segmentation yet
Slide 7
MICE VC March 2009
Jean-Sebastien Graulich Slide 8
EMR Simulation
Las
t la
yer
reac
hed Muons above
270 MeV/c are not stopped
Range as a function of momentum
MICE VC March 2009
Jean-Sebastien Graulich Slide 9
EMR Simulation
Same as before; profile plotL
ast
laye
r re
ach
ed Approx. Lineardependence, as expected
~ ¼ layer per MeV/c
MICE VC March 2009
Jean-Sebastien Graulich Slide 10
EMR Simulation
Straggling and Pz Resolution
Stopping in Layer 15
Co
un
ts p
er m
om
entu
m b
in
Momentum at TOF2 (MeV/c)
Stopping in Layer 20
Stopping in Layer 25
Stopping in Layer 30
MICE VC March 2009
Jean-Sebastien Graulich Slide 11
EMR Simulation
We obtain Pz Resolution estimate:
Pz ~ 4.2 MeV/cSimilar to nominal Tracker (3.9 MeV/c)BUT
This is for PT = 0
Where the actual tracker resolution is very poor:
Pz > 20 Mev/c if PT <5MeV/c
To be continued
MICE VC March 2009
Jean-Sebastien Graulich Slide 12
ResponsibilitiesResponsibilities Geneva Geneva
Construction and assemblyConstruction and assembly 1” PMTs and Analog electronics (FADCs)1” PMTs and Analog electronics (FADCs) High Voltage for MAPMHigh Voltage for MAPM ~ 15 MAPM~ 15 MAPM WaveLength Shifter fibers (we will seek help fromWaveLength Shifter fibers (we will seek help from
Japanese colleagues)Japanese colleagues) High Voltage for 1” PMTs ?High Voltage for 1” PMTs ?
Como/MilanoComo/Milano Electronics developmentElectronics development Test in beamTest in beam
TriesteTrieste ~ 20 MAPMs~ 20 MAPMs WLS Fibers for the prototypeWLS Fibers for the prototype Fiber gluing technique (task to be outsourced)Fiber gluing technique (task to be outsourced)
FermilabFermilab Production of the scintillator bars Production of the scintillator bars
MICE VC March 2009
Jean-Sebastien Graulich Slide 13
PlanPlan
The aim is to have the detector ready for The aim is to have the detector ready for MICE in first quarter of 2010MICE in first quarter of 2010
Some experience is required before we Some experience is required before we can have the full understanding of time can have the full understanding of time scalesscales
There will be two prototypesThere will be two prototypes Existing, small size, with square bars will be tested Existing, small size, with square bars will be tested
at CERN this spring or early summer, with final at CERN this spring or early summer, with final electronics and PMTs. Could be brought to MICE for electronics and PMTs. Could be brought to MICE for integrationintegrationtest in fall 2009.test in fall 2009.
A double plane (x-y), full size, with triangular bars A double plane (x-y), full size, with triangular bars will be studied/assembled in Geneva in order to will be studied/assembled in Geneva in order to establish the construction principles.establish the construction principles.
MICE VC March 2009
Jean-Sebastien Graulich Slide 14
The EMR groupThe EMR group
Trieste INFN and Trieste University- Physics Trieste INFN and Trieste University- Physics DepartmentDepartmentErik Vallazza, Erik Vallazza, Como Univ. and INFN-MiBComo Univ. and INFN-MiB
Michela Prest, Valerio MascagnaMichela Prest, Valerio Mascagna
Michela’s Boys&Girls: Andrea, Daniela, Davide, SaidMichela’s Boys&Girls: Andrea, Daniela, Davide, Said University of GenevaUniversity of Geneva
Alain Blondel, Vassil Verguilov, J.S. Graulich, Alain Blondel, Vassil Verguilov, J.S. Graulich, Franck Cadoux, Florian MasciocchiFranck Cadoux, Florian Masciocchi
FNALFNAL