calorimetry and muons
Tohru Takeshita
Shinshu Univ.
A Working Group summary talk should be a review of the current status of
the topic. Please structure the talk with an overview of the topic,
highlight open issues and recent developments, and report on expected
future near-term developments.

T.Takeshita-LCWS2004@Paris

Number of talks in LCWS
cal-soft

cal-hard

muons

20
15
10

sim

5
0
1999

Sitges2000

Fermilab

2002
Jeju

2004
Paris

T.Takeshita-LCWS2004@ParisCalorimeter and muons
hardwarehighlight

Particle Flow
resolve jetshigh segmentation / granularity
detector both in lateral andlongitudinal directions =3D
T.Takeshita-LCWS2004@Pariscalorimeter to resolve jet
tracker

EM

HCAL

muon

identify particles in a jetelectron: track+EMCAL
muon:tack+EMcal+Hcal+muon
measure energy of neutral
particles in a jet ~10-15%
neutral Kaon/neutron: HCAL
combined work of all detector
T.Takeshita-LCWS2004@Pariscalorimeter effort
needs

actualseparate clusters large radius and depth
magnetic fieldcalsmall Moliere radiusdense material
fine segmentation
Particle Flow algorithm
T.Takeshita-LCWS2004@Parisopen issues
Tracker/VTX
momentumcalorimeterclusterp

E

QCD
particle
QCD

jet

m

missingE

q/l,g,W/Z
T.Takeshita-LCWS2004@Paris

!"#$%&'($)*+,%-./%(30*0:';-,0:<*Particle Flow Algorithms@A,-%%-:*'$2)--4-:*'in US

recent developments
1. photon reconstruction inside jet:+&,(+-#)'./'+&0(1'%2+&03#40+-#)2. H-shower recons. by track extrap.
"&#,6"'789'-#)'90/%&>'?=9@&'3"#+#)*+-#)'B5789

E789

3. neutral H recons.

#$%&'-)'5789'!"#$%&'()*+,+(+,-./&01(+"#2&'(3&41*(2+*07EphotonC1+&$-.1*D&EFGGH&01(+"#2&$-.+",)(+,-.&+-&:&*(3D&IJFK&L1MH&L-#2D&IN&L1M'+,.%*'-)'5704'/'?5J3'+%*+@

5.$2(61*&758*&9&$122&:;*&,.&+()1*&<=("+>1"&:?@&+(.,.A&.11616B
Dhiman Chakraborty=9 H-shower
track
+&0(1
track ext. *"#$%&

Dhiman Chakraborty

Particle-flow algorithms in America

27

Particle-flow aCurrent CAL. activities
E.M. CAL. R/D
type

Si/W
Scinti.(+Si)

granularity

collaboration

0.5 ~ 1 cm

CALICE
US-Si/W

4 ~ 5 cmLCCAL
US-NICADD
GLC-CAL
T.Takeshita-LCWS2004@Paris

Current CAL. activities
H. CAL. R/D
R/O granularity
Analogsemi- 3-5cm
digitalDigital 1-3cm
dual

possible

activemat.

collaboration

scinti.

CALICE-Tilecal
NIU
GLC-CALRPC
CALICE-DHCAL
GEM
GLC-CAL
scinti.
scinti+dream
fiber
T.Takeshita-LCWS2004@Paris

Current Muon activities
active mat. granularity collaboration
glass RPC

3cm

CaPiRescintillatort
4cm(1cm)
strip w.
US-muon
3.5m
WLSF
T.Takeshita-LCWS2004@ParisMuon activities!"#$%"&'()*&+,-#.%&/
recent developments
RPC

1.muon ID soft.
eff.1.0

muon +HCAL0
eff.1.0
muon alone
0

5GeV

10
!"#$%&&'()*$$'&'

Marcello Piccolo

2.rate test

3.long term

! "#$%&'()*')+,-.+/'
1.0 ./*+0/1'$23045*#'()*'/46'*%*0&1'+..*3(+%.*'
740'284%#9! :)*')+0,'/$2$('()*'4%*'$#'.4%704%(*,'6$()';740'
6)+('()*':<=>?',*#$&%'$#'.4%.*0%*,'$#'+048%,'@'A*BC.9
ü HV = 8200 V

temporary recovery of a “dead” camberü HV = 7800 V

remove water < 100ppm

0.5Hz

+,

Tommaso-Tabarelli de Fatis

Muon activities
RPC

near-term developments

muon ID soft.:
at low momentum, work with HCAL
test with background muons
hardware :rate dep. :extend the rate capability(avalanche mode and conductive glasses)
instability: Running with dry gas (chamber lifetime)Muon activities
3+45/#4

recent developments
scintillator!"#$%&'()*+#$(,-'*.#$'#()*"(&+ !,-.*#&/)0-(!"#$%&'%%'($!"#$%&'()"*,&%-'#(,-'*.

0,)*)+

1.muon ID stepper 0))*)+2. fiber splicer!""#$#%&$'()%*+,+(-./%&0,/(1(23(-#4+0%&%

12

.)*)+

'

-)*)+

!"&

,)*)+

*+,--./012345647*+,--./8940:2;045647!"$*<.==./845647

+45"#

FD"*#

)*)+

3)

0-$5+')67'7)0-5$4+/ !"#$%$ 89#")54-$):);)<)=>? @)"-.'):)>7?)$.A)B)&'"() *+,-"C>)!
(!

$(

$!

)(

)!

#(

'!

(

!

!

6 7+8+.(/&4-/"$+4&9"#%&8+.)&-::.&#.(*4;"44":*&</:44+4&=&>1?@
D3')E"'&426)-.)6#F'"'()G1)HIJ 9"#2)%3')K26)
6 A)-"$(/&#.(*4;"44":*&:B&CD>&E F1?
3. ampF3-,3)4+.#)2'4.L"'.)%3')4$#('),L""'$%7
6 G:*#.:/&B"H+.4&9IJ11?&#.(*4;"44":*&4%:9&4)4#+;&4#(H"/"#)K@>(/&A+(#"*B&-,.&(-./%&0,/56%78$9
#!

!"#

1223

'
5"6

G+H/D*&?/++I+!"#$%&'$()*+',%"#$-,./)01.%'2)0,3'24%-,
)
0)
,)
1)
-)
2)
.)

!"%

'(

44>3

'"#

!""#$#%&$'(

44>3

/)*)+

;/+(.&5"6+.
7&88

C/D$E?
;/+(.&5"6+.
'34&5"6+.
!"#$%&'()*+&,-."/&0112
788&9"(: 5"6+.&< =($>>8&;/(8-?

punchthrough 1/80!"#$%&'()*&%+,('()-.#&%)/001!"#$%&'()*+&,-."/&0112

Eugene Fisk!"#$$%&'()%&

Muon activities

scintillator near-term developments
simulation :muon ID algorithms
low p muons: tracking in HCAL
hardware :1m strip R&D, fiber splicing
MAPMT-calibration
FE electronics

10cm wide, 5mm thick

Tail catcher or muon

Fermi-NICADD Extruder Line
Uniformity

scintillator

1200
1000
800
600

X-talk

400
200
0
-20

ight Yield

047
2. separation
groove

45

15pe

20

40

60

80

10cm

100

NORMALISED CROSSTALK FOR STRIPS WITH
POSITION OF Sr-90, MM
SEPARATION GROOVE
30.0

V. Zutshi, ICLC04, Paris

NORMALISEDRESPONSE, %15 p.e.

recent developments

RESPONSE OF EXTRUDED STRIPACROSS THE TWO HOLES AT 70 CM

VALUE OF RESPONSE,
nA

1. uniformity

extruded

25.0

4/21/2004

V. Zutshi, ICLC04, Paris

4/21/2004

Se

20.0

Se

15.0

Se

10.0

Se

5.0

Se

0.0
0

X-talk
3. MRS/SiPM R/O 50 Vishnu Zutshi

V. Zutshi, ICLC04, Paris

4/21/2004

20

40

60

80

100

POSITION OF Sr-90, CM
V. Zutshi, ICLC04, Paris

4/

Forward Region – LumiCal (LAT) and BeamCal (LCAL) Calorimeters

Forward cal.
The main functions:for Bhabha process

LumiCal - Simulation • Precision luminosity measurements (LumiCal) : !L / L "Tel-Aviv
10–4 + -e e ' e+e- (()• Fastbeam diagnostic+ physics(BeamCal)
EnergyandAngularresolution• Detection of electrons and photons at very small angles• Shield of inner (tracking) detector• Supplied maximum hermiticity
LumiCal

New mask design

recent developments
Simulation: BHWIDE (Bhabha)+CIRCE (Beamstrahlung)+beamspred– z = 305-325 cm– r= angular8-28 cm symmetry.
Eventsselection:
acceptance,energybalance,azimuthaland1. new design(Lumical & Beam
– 26.2<#<cal)
82 mrad– 0<$<360 deg
Gas angle
Ionizationreso.
CalorimeterW/
C3F8
sim. BeamCal– z = 365-385
cm• Beam tests of prototypes with electrons up to 70 GeV(IHEP
Protvino)
Lumical– R = 1.2-8 cm
at pressure up to 1.8 atm , lead absorber - 1.5 and 3 mm– ,3.9<#<26.210mm gasbigap
mrad– 0<$<360 deg
Ne•

LumiCalFirst Look at P
BeamCalMC simulation – Tungsten as absorber

L% " 4 m optics

Advantages:- Reduce the leackage particles from LumiCal – help to achieve required
Efficiency to identify
energy electron
precisionhighin LUMIless fakes
can scatter from mask into ECAL
- small and -large
background- more space for electronics
TDR design:- outer CAL better separated from beamstrahlung-4- Shintake monitor can be used
!L/L: 10 impossible
0.2 – 0.3 mrad accuracy
2!# & a few µrad : !L/L 10-4 possible

BeamcalFinal choice of LumiCal sensor geometry ?

2.gas ionization chamber

5

PCB with redout pads
to collect the ionization electrons

nominal setting(550 nm x 5 nm)

3.sensors test (Silicon/diamond/ccd)
L.Zawiejski

26

H.CAL.

AnalogEnergy Resolu

recent developments

ThewithMiniCalExperiencea smallPrototype(108ch) prototype (MINICAL)
e+ 1-6 GeV

1. tile w. SiPM
prod.
Moscow
SiPM

2. minical

Erika Garutti

Hamburg

ry
a
in
m
i
l
re

0.1 cm Ø WLF

Tile with SiPM

P
97%
showercontained
in 11
layerscassette

0.5 cmactivecassette

2 cm
Preamplifiers - comparison
steel

3x3 tiles
21/04/04

q SiPM
q PM
q MC (SiPM)

Erika Garutti, LCWS 2004,
Paris

3

MIP
21/04/04
beam

3. APD R/O
Jaroslav Cvach

Voltage sensitive Prague
1ch. discreate + shaperGate:
120 nsCharge sensitive Minsk
1ch. integrated + shaper
500 ns

è
t
r

è
i
-

3 tilespedMichael Danilov

èbw

LAL ECAL modified chip
18 ch. + shaper + track&hold
780 nsErika Garutti, LCWS 2004
Paris

H.CAL.

AnalogEnergysums
near-term developments! energy corrected of 93 tiles forbeam energies of 1-6 GeV
Very good Gaussian shape
Data show good linearity in E
within 0.5%
Agreement between two energy
runs better then 0.2%
All tiles in the cassette will be tested before transportation to DESY
Final tests and commissioning with FE electronics
and DAQ
be done at DESY
The properscalewillis investigated

1 GeV

2 GeV

and Support Structure
1. physics prototype prod. Absorber
2. minicaltest SiPM & Tiles
APD data anal.
3 GeV

1m

4 GeV

Cassette with Tiles and Electronic Cards

5 GeV

LCWS Paris, April 21, 2004

Michael Danilov

J. Cvach, APD & Calice

6 GeV

10

After threshold-based weighting of cells

H.CAL.
Single Particle Resolution (50 GeV)

ayer Semi-DigitalStack
1. simulation

recent developments
analog2bit
semi-digital!"E=0.101

Cells FabricatedV. Zutshi, ICLC04, Paris

2. prototype test with SiPM and MRS
4/21/2004

3. basic test
uniformity, wrapping ,,,near-term developments
CALICE TB Vishnu Zutshi

4/21/2004
1.200

1.2
NOMALIZED RESPONSE

V. Zutshi, ICLC04, Paris

Sigma Groove Uniform
1.000

1

0.8

NORMALIZED RESPONSE

9!"E=0.092

0.6
0.4
0.2
0

0.600

0.400

0.200

0.000

0

10

20

30

POSITIONOFSr-90, MM

24

0.800

40

50

0
-0.200V. Zutshi, ICLC04, Paris

H.CAL. 1.2 mm gap RPC

RPC in avalanche mod

1
m3
DHCAL
prototype
recenteff,developments
Digital-RPC<m> vs HV
m3 DHCAL prototype

Test of 1 m2 RPC
plane
- 2%
and 5% of SF6 eff.

Constructionof 1 m2 RPC plane
1. operationmode:

2. 1m 2
Cosmic ray trigger
Using scint counters
RPC
96x6 cm2
2 counters - top
1 counter – bottom

avalanche mode

Thresholds ¢ - 0.6 mV¨ - 2.2 mV! - 5.0 mV<m>

2.2 mV is best threshold
eff >99%
low <m> ~ 1.4

1 m3 DHCAL prototype
Test ofFor
1 m2
RPC plane
2.2 mV Knee

TFE/IB/SF6=90/5/5
gas mixture!V
April 21, 2004

anode glass – 0.5 mm thick, cathode glass – 0.8 mm thick,
1.2 mm gas gap, 6 mm dia spacers
V.Ammosov
19
Paris, LCWS-2004

Vladimir Ammosov

HV

0.6 kV

V.Ammosov
Paris, LCWS-2004

eff.

April 21, 2004
V.Ammosov
Paris, LCWS-2004

HV
8.2 kV21

H.CAL.5T test

Further R&D

Digital-RPC

near term developments

Mini
DHCAL
prototype
1. 5T mag field test (June04)

Goal – first digital measurements of electromagnetic sho
and comparison with simulations.
Usage of minimal number of RO channels ! (640/1280 ch
Most hard case for digital calorimetry !

2. Mini DHCAL test in e-beam (Dec04)
Here is assembly which we would like to use

3. production of 40 unitsof 1m2 RP for 1m3 DHCAL
prototype (Apr05 )April 21, 2004

14

V.Ammosov
Paris, LCWS-2004

4. beam tests of 1m3 DHCAL prototype(Dec05)
April 21, 2004

Vladimir Ammosov

V.Ammosov
Paris, LCWS-2004

•
•

•
•
•
•

Readout board: 3x3 array of
1x1cm2 pads
Signal out of each pad is
amplified by an on-chamber
amplifier (gain ~80*100 !)At the moment, no cosmic ray
trigger for such a small area.
…
NEW
We have 32 of 64 pads
instrumented with the same
amplifiers

H.CAL.

Digital-RPC

1. basic studies
Front End
ASIC

Basic Architecture

Example Signal
Neighboring Pads
recent Showing
developments! Signal
amplitude in
adjacent
1 cm pads is< 10%! Rise time ofsignal larger
on 2
neighboring
pads ?

1x1cm pad15

2. FE ASIC

nt End Amplifier &criminator Senses Hits
ove Threshold
Bit Timestamp Counter Runs
10 MHzmparator States Clocked intoft Registerve States & Timestamp on. Trig. or Self-Trigger
ial I/O – Separate Data,
ntrol, & Trigger
vices 32-64
CHUnderwood
David

64ch

3. back end VME

H.CAL.

Digital-RPC

near term developments

1. graphite layer(silk screen)
2. RPC construction
3. Multi-channel VME readout

FY 2004: complete all R&D
FY 2005: construct 1 m3 prototype section
FY 2006: test in particle beams
David Underwood

H.CAL.

Digital-HCAL-GEM recent developments
Measured UTA GEM Gain
1. prototype GEM
UTA Prototype

2. investigating electronics
3. GEM module concept
4. sensitive layer

Andy WhiteCERN GDD group measurements

Stre
laye

H.CAL.

Digital-HCAL-GEM

near term developments

FY04 -> FY05
Build and operate a complete working drawer anddemonstrate track finding for cosmic rays.
Develop readout scheme for test beam stackEngineering studies for calorimeter module andtest beam stack
FY05 -> FY06
Complete test beam stack design and readout
scheme design
As funding allows: acquire materials to construct
40-layer stack
Andy White

H.CAL.
Dual-Readout Module (DREAM)

Dual R/O

Dual-Readout
Module (DREAM
recentdevelopments

1. detector“Unit cell”

Cerenkov vs.
Scintillation Electrons: energy resolution

2. results
cerenkov

30cm Resolution of !’s and “jets”“Unit cell”“Unit cell”

scintillator

electronspions

E.M.CAL.
).21010/.$-,+*$)('

entation of the front-end electronic

2 calibration switches chips
ive wafers
6 calibration channels
e of 36 silicon PIN
0!"&per=0=&'!"&
chipodes(&'%#&%!#$!!#!"!
18 diodes per calibration
6 channels per board#+25-,4).& 0#!&3 0#+2+//1& 0/.-,+*)'
channel!"$ 0#,+;:+897.( 0#).827-),-6
diode is a 1cm!
quare
12 FLC_PHY3 front-end
3?(#%Line=>'#%=buffers<'chip
To DAQ partD$&?"C%B'A 0+@2.,%
18 channels per chip
Differential
3EF#3E?
13 bit dynamic range

Si/W-CALICE

1. prototype EMCAL)mm4.1x 3,2,1( iFC-W serutcurts 3 !

First test with a complete detector slab

recent developments++##*)*)(($$'' $$&&##%%$$##""!
!

Si wafer - glue - PCB - VFE – DAQ (Full proto DAQ)+#*)($' $&#%$#"!

2 erutcurtS

Sr90 source ! trigger ! read 1 channel

3 erutcurtS

Strontium Peak - New Wafers

hist_event
Entries
2000
Mean
66.58
RMS
27.77

FLC_PHY3
meas. Results - Listresni lateM
140» sbals rotceted « 51 !
mm 063x063x002 noisnemiD !
.otorp eht ni slennahc 0279 !

)ecafretni(

120

Wafer fromAcademy of
Sciences/
Prague

mip

100
80

htiw srefaw nociliS

60

mm063
FLC_PHY3
overview
14 layers)&%%$"!#"!( sdap 6!6

Measured input charge swing
40

Within ‰ linearity :Dual shaper & track and
QIN MAX= 6.04 pC (900 MIP)
4hold
• 4 bits for gain selection• Gain 1 and gain 10@Cf=3pF• Gain from 0.3 to 5 V/pC
mm063 • Work in parallel to select
QIN MAX= 3.27 pC (500 MIP)
• Gain selected offline
gain
ENOZ aEVposteriori
ITCA
mm 26
bals rotceteD)2mc 81!81(@Cf=1.6pF
Linearity curves (sweeping Cf /QIN MAX= 0.41 pC (60 MIP)
G1)
@Cf=0.2pF
1 channel
20

mm 26

2.1 mm thickMulti-gain
charge preamp
Made in korea

Si(6x6x6)

0
0

20

40

60

!"#$%&'())*%&*%&

2. electronics for
prototype:

9!!*87)65(4./3,2"1-,.0(/.-,+

OPA

g=10

Amp

Jean Charles Vanel
Julien Fleury

I mp. Col. !'1&'2).*3+0

and ground with Al. EMC shield

1 erutcurtS

02
0
mm

LLR ! S.Chollet, F.Gas
LAL !'"&-,+./0

OPA

g=1

80

100

120

140

160

180

200

ADC counts+,-./(0.,-1"2,3/.4(56)78*!!9&%*&%*))('&%$#"!

MUX out Gain=10

Globalcharacteristcs• 18 channel input• 1 mux output
MUX out Gain=1

5

Rentation of the front-end electronic

E.M.CAL.
Cosmic test results (cont)2 calibration switches chips
ve wafers
6 calibration channels pere of 36 silicon PIN
chip
odes
18 diodes per calibration
6 channels per board
channeldiode is a 1cm!
uare
12 FLC_PHY3 front-end
chip
18 channels per chip
13 bit dynamic range

developments
consistent
with hodoscope track interpola
Si/W-CALICE• Select padsrecent
CERC status

Line buffers
PrototypeTo•DAQ
part design completed last summer
Differential• Two prototype boards fabricated in November

VME• Improves pad occupancy per eventfrom ~1/360 to ~1/6

• Currently undertests with aprototype VFEPCB in Ecole
Polytechnique• Further tests–xwith final
14 layersversion of VFE• Peaking time !~210ns
PCB in May
2.1 mm thickMade in• CERC
koreafinal
production 4in
July to shorten trigger logic path!
• Close to maximum allowable latency; will try

3. Readout prototype• Clear cosmic MIP peak seen, ~45 ADC counts above
Strontium source results • MIP = 200 keV; calibrates ADC so 1 count = 4.4 keV• FLC_PHY chip CR-RC shaper gives xe • shape,
x=t/!
digitise
32k fullrange ~ 700 MIPs; requirement> 600&
MIPs J• Noisepertochannel= 40 keV• Scan over sample-and-hold time relative
to trigger
find peak ~ 9 ADC counts
memory• MIP:noise ~ 5:1; requirement > 4:1 J

LCWS04 - 20 Apr 2004

ADC

5Paul Dauncey - CALICE Readout

cosmicSr source test

ADC
hold time (ns)
LCWS04 - 20 Apr 2004 Hold (ns)Paul Dauncey
Paul Dauncey - CALICE Readout

S04 - 20 Apr 2004

Paul Dauncey - CALICE Readout
13

Alternative solution for electronic

E.M.CAL.

!
"

Si/W-CALICETESLA TDR solution-Industry cannot build 1m PCB and tendance is going smaller- High line capacitance à very noisy- Big number of lines àcrosstalk issue and many PCB layers

near term developments

1. technology prototype
cooling( lowpower),
Alternative
solution ADC

VFE chip

Cooling

Si Wafers
PCB-Chip embedded in detector-1 chip per wafer (36-channel chip)- low power issue
Tungsten- Cooling issues- temperature distribution in module?
- Fake signal due to e.m. showers in chip ?

2. VFE to analog-HCAL R/O

Jean Charles Vanel

Paul Dauncey Julien Fleury

8.5mm
13

Components in hand

E.M.CAL.

Components in hand

Si/W-US-SiD

recent developments

1. components
W
HPK

Tungsten
Silicon
Maintaining Moliere Radius• Rolled 2.5mm
Electronics design – Present§ 1mm
still –
OK
Electronics
designPresent• Hamamatsu detectors• Very good quality• Should havefirst lab
dynamical
switchTungsten
Siliconnelmeasurements soon
§ < 30 !m variations• Rolled 2.5mm
Timing MC (contd)m• (Practicing on old 1cm dets.)• 92.5% W alloy§ 1mm still OK• Hamamatsu detectors• Pieces up to 1m longpossible17
ICLC Paris
R. Frey• Very good quality
ns timeconstant• Should 50
have
first
lab andConcerns & Issues:
30-sample
averagemeasurementssoon§ < 30 !m variations• Needs testing with real
• (Practicing on old 1cm dets.)• 92.5% W alloy
electronics and detectors• verification in test beam
50ns
• Pieces up to 1m long possible ICLC Paris R. Frey17

2. electronics designWwitched Cf (D. Freytag)

d Cpowercedf (D. Freytag)
currents
ower in 1st stage only

50MHz clock

er 1st stage larger
nts in 1st stage only
V ! 6.4mV for MIP

Ray Frey

stage larger
6.4mV for MIP

Shouldn’t need copper heat sink if
present heat load estimates arecorrectexpansion(or close to correct).
time
Angle = 11 mrad
• Compare with effective Moliere• synchronization ofclocks (1 part in 20)

30sample•

0.7ns• physics crosstalk• For now, assume pileup
window is ~5 ns (3 bx)

E.M.CAL.

Si/W-US-SiD

near term developments

1. timing resolution
Needs testing with real electronics and detectors
verification in test beamPower
2. low power consumption
Use power cycling
3
34mW/wafer(10ch)

3.Fabricate initial RO chipand test
Rey FreyPrototype description

E.M.CAL.

Pb/Sc + Si

• 45 layers• 25 ! 25 ! 0.3 cm3 Pb

Prototype (cntd)• 25 ! 25 ! 0.3 cm3 Scint.: 25 cells 5 ! 5
cm2

Scintilator/Si-LCCAL
Construction Details

3 Si planes
recentdevelopments
Test beam• results:Si
pad detector(Position Meas.)252 .9 ! .9 cm2 Si
Pads
Goal: shower-shower separation,
position• 3 planes:y pad Si L2 (cm)

• at: 2, 6, 12 X0
measurement, e/h identification:

Cern TB 2003

1.
det.calorimeter
constructed• Pad dimension< shower
dimension:
Scintillation
light transported with45 Layers
prototype
WLS ! tail fibers:
completely built in 2002 .9x.9 cm230 GeV
Coupled with clear fibers (to PM) Si-plane
and tested• Longitudinal sampling:
electrons
Cell separation with grooves in Sc.

Pad
3 planes
plates with Tyvec strips inside
Fibres grouped into 25x4 bundles making
diode(light leakage!?)ty and Energy Resolution
a 4-fold longitudinal segmentation.
• Analogic RO
ac(old)03
04/22/2004
P. Checchia
LCWS04
Testbeam results: uniform3
VA
hdr9c
from
IDEas
dc(new)
Slots for the insertion of the 3 Si pady telescope(cm)2
Cern TB30
GeVecoupledplanes(Motherboard).
!=es
2.4 Mechanical support for
confirmed at high5mm
Photomultipliers
Actual design:energy !!!
Si
x telescope
L1+L2!= contact
11.1%/"Epcb- Detector:!6x7=2 pads
3.2.167m!=1.76 mm
mm
withm- Plane: 3x2 detectors± 2%
conductive glue
Ecal (GeV)!E/
E

3 Si-planes

04/22/2004

Ebeam (GeV)
04/22/2004

e-P. Checchia LCWS04

30GeV-esimulation
near
term
developments
in
the
3x3
centralcells
75 GeV#

04/22/2004

Paolo Checchia

P. Checchia LCWS04

x pad

Si L3

4

x (cm)(cm)
y pad –y telescope

P. Checchia LCWS04

5

x telescope

± 2%

y(cm)

Si L2
Si L1

E.M.CAL.

Energy resolution
developments
Structure andrecent
readout oftile/fiber ECAL

Scintillator-GLC

4 Layers = 1 Super Lay
6SL = 17 X０

1.mega-tile cal.
18%@1GeV

Non-uniformity measurements
Cente
Total No. of
R/O Ch:(Uniformity mapping)

JEM (JINRX-uniformity
EMcal)
scan across
5x5x6= 150r

the edgeof between
the tile JINR
• BetterR&D onScinti-tilewith
production basedon MoU
uniformity(5mmx1mm mesh)
and KEK layout
alternating

Pb4:Sci1mm• An EMcal test module made at JINR: similar!design,
but
stat = 17.5%
some differences:
Scintillator material:

Pb2:Sci1mm
2.JINR-tile cal.
12%@1GeV
less thick
Hitoshi Miyata

made by JINR
Tiles are made with pressure
molding: good accuracy
WLS fibers glued to rectangulargrooves:(H6568)Thinner Pb plate (2mm-thick) :total thickness = 14.4 X0

1 Layer = lead plate+ x-strips x20 + y-strips x20

E.M.CAL.

lead : 20cm x 20cm x 4mm-thick

Response uniform

strip : 1cm-width x 20cm x 2mm-thick

Incident position determined by Dri

Total 24 layers : 17X0

Response in 1st SL x-strips for 4GeV

developments-> 6 super layers (1SL=4layers) recent
Response
sum over strips : uniformit
Scintillator-GLC
1SL

1.strip cal.

13%@1GeV
Spatial resolution
pos. reso.

WLS fiber + clear fiber
Read out by Multi-anode PMTs
(tentatively for beam test)

uniform
Angle measurement of 4 GeV electrons
with non-zero incident angle
5s = 2.0 mm
around shower max

angle reso.
Good Linearity !!
sq=2.3 degree at least up to 16 degree

Kiyotomo Kawagoe

Position resolution for 4 GeV electron

Slope < 1 : due to different “effective”
16
13 material thickness for non-zero
incident angle

E.M.CAL.

Scintillator-GLC
Directcoupled1.strip shower max. w. apd
PD R/O contd.

Direct coupledrecent developments
APD R/O contd.

012+3345677+7$$.7$$+819.:-

Strip fiber with
HAPD R/O

cut-ireg-trig-cere W.M.5strips

0.1018E-01
0.4517E-01

cm

!"#$

pedestal

(cm)

15.75

/ 2
0.7361-0.1400E-04

P1
P2

0.1018E-01
0.4517E-01

0.8

0.7

0.6

0.5

0.5

Strip fiber withEBCCD-camera
0.4

0.3

8196;

++/-&$++%&'()'*++,-$$.,-$$./-&$

2.strip shower max. w. HAPD
pions

1

0.9

15.75

P1
P2

/ 2
0.7361-0.1400E-04

1.0

cut-ireg-trig-cere W.M.5strips

8196<

0.2

0.0

0.1

0

1

0

0.5

1

2

1.5

2

3

2.5

3

4

3.5

4

4.5

5

Energy(GeV)

200ms exposed 4GeV: electron/p
3.strip
electrons thickness:1cm shower max. w.
witho
with Pre-shower
pedestal
EBCCD-camera
1MIP

1 Takeshita
2 position3resolution4soon
Tohru

2
3

4

5

E.M.CAL.

Scintillator-GLC

near time developments

Scintillator strip-array ECAL

1.detail analysis
particle ID performance
Arrayincludingof 1cmx20cmx2mm-thick
strips
for
tile
cal.
Advantages :granularity(1cmx1cm effective
cell size)
2.need moreFine
study
two-particle
separation/ghost
Reasonable cost
rejection
No WLS fiber bending

Disadvantages :Ghost rejection needed

3.more efforts on HAPD
and SiPM R/O

3

Summary

Hard studies are going on
motivated by PFA
Muons: simulation studies are going on
HCAL: construction of digital HCAL
and beam test are on schedule
EMCAL:Si/W EMCAL will be tested
hope to identify source of jets