ILD-J calorimeter activities
ECAL
Silicon ECAL : T.Suehara (ICEPP)
Scintillator Strip ECAL : W.Otani (ICEPP) & T.Takeshita (Shinshu)
H.Ono (NDU), E.Saito (Nagano TS)
HCAL
Scintillator Tile HCAL : W.Otani (ICEPP) & T.Takeshita (Shinshu)
Scintillator Strip HCAL : W.Otani (ICEPP) & T.Takeshita (Shinshu)

T.Takeshita March2024 for ILD-J meet

国立高専機構長野高専
日本歯科大新潟生命歯学部

LGAD

Silicon ECAL
timing resolution : T.Suehara• LGAD : avalanche detector for charged particles• overall timing resolution ~ 53pspulse hight (V)timingwave forms
on timing

setup

noisetime (ps)KEK-PF Test Beam

Scintillator strip ECAL
strip ECAL Beam test (W.O + T.Murata, T. Takatsu, T.T)
with CEPC Institutes (USTC, IHEP and SJUT)• cosmic test at USTC
42x5x32=6720 ch• Beam Test at CERN SPS and PS at2022, 2023)
CERN-SPS-H8

Scintillator strip ECAL
strip ECAL Beam test (W.O + T.Murata, T. Takatsu, T.T)
with CEPC Institutes (USTC, IHEP and SJUT)• cosmic test at USTC
42x5x32=6720 ch• Beam Test at CERN SPS and PS at2022, 2023)
CERN-SPS-H8

Scintillator strip ECAL
strip ECAL Beam test (W.O + T.Murata, T. Takatsu, T.T)
with CEPC Institutes (USTC, IHEP and SJUT)• cosmic test at USTC
42x5x32=6720 ch• Beam Test at CERN SPS and PS at2022, 2023)
CERN-SPS-H8

Scintillator strip ECAL
strip ECAL Beam test (W.O + T.Murata, T. Takatsu, T.T)
with CEPC Institutes (USTC, IHEP and SJUT)• cosmic test at USTC
42x5x32=6720 ch• Beam Test at CERN SPS and PS at2022, 2023)
CERN-SPS-H8Scintillator strip ECALstrip ECAL Beam test (W.O + T.Murata, T. Takatsu, T.T)
with CEPC Institutes (USTC, IHEP and SJUT)• cosmic test at USTC
42x5x32=6720 ch• Beam Test at CERN SPS and PS at2022, 2023)
CERN-SPS-H8

Scintillator strip ECAL BT
some results• High & Low gain amp.
• LED calibration• MIP calibration• sim vs data

Scintillator strip ECAL BT
some results• High & Low gain amp.
• LED calibration• MIP calibration• sim vs data

Scintillator strip ECALLong strip option (W.O + ???)

• installed scECAL at the last 2 layers in X&Y• Beam test data analysis on going• remove accidental data by taking coincendencewith two sensors.

beta test• remove ghost hits by chase division.
beta test• position resolution=2cm• improve timing resolution ?
CJ-ECAL at 29,& 30 layer

beta

Scintillator Strip/Tile CALtrigger

Tile timing option (W.O+ Y.Ueda )strip 45mmx2mmx5mm• timing by waveform digitizer at 25%• ECAL ScStrip with dimple (single MPPC) :~500ps
four MPPCs, side RO) :• tile layer ( smaller,
15x15x3mm~70ps• timing resolution

tile 15mmx15mmx3mm3

tile

1/ LY
UV laser

UVlaserbeta rayby UV Laser lightECALScintillator strip ECALπ/Kstrip timing option (T.T+ M.Ishitani)e/γ• timing resolution

1/ Npe ：increase LY• UV 375um laser• MPPC : large # photons : 9ps•

scintillator strip

MPPCUVside R/Oa few photons : 90ps

• strip one side R/O : 152ps• beta ray test
• >> strip single/double sides R/O• >> planning EM shower to increase LY >> better timingtime (ns)

Scintillator Tile HCAL
Tile HCAL Beam test (W.O + R.Masuda, T. Takatsu)
with CEPC Institutes (USTC, IHEP and SJTU)• Beam Test at CERN SPS and PS at 2022, 2023)• 4x4x0.3cm3: 18tile x18tile/layer * 40 12960ch
XY
XY

CERN-PS-T10
3D
XZ

3DXZ

Scintillator Tile HCAL
Tile HCAL Beam test (W.O + R.Masuda, T. Takatsu)
with CEPC Institutes (USTC, IHEP and SJTU)• Beam Test at CERN SPS and PS at 2022, 2023)• 4x4x0.3cm3: 18tile x18tile/layer * 40 12960ch
XYXY

CERN-PS-T10
3D
XZ

3D
XZ

Scintillator Tile HCAL
Tile HCAL Beam test (W.O + R.Masuda, T. Takatsu)
with CEPC Institutes (USTC, IHEP and SJTU)• Beam Test at CERN SPS and PS at 2022, 2023)• 4x4x0.3cm3: 18tile x18tile/layer * 40 12960ch
XY
XY

CERN-PS-T10
3D
XZ

3D
XZ

Scintillator Strip HCAL
long strip HCAL (W.O, T. Takeshita)• improve timing for π/K separation
long strip• need modi ed ASIC from SPIROCtile• keep the same number of channel
223x3cm
tile>
1x9cmstrip with double readout•fi• no-gain for Jet Energy resolution

scintillator production
Cured at room temp.
H.Ono, NDU）

• handmade from scratch• LY ~ 1/2 of EJ204• good uniformity（E.Saito, Nagano TS,

Summary and outlook
For ILD-cal toward Fccee+eImprovement
currentILD-e•• timing layer(s) ECAL - LGAD, strip-double
readout• timing layer(s) HCAL - long strip-double
readout• Improvement/modi cation to ILD-Fccfi• RDR6 / US collaboration

Scintillator Strip ECAL
timing measurement• with two strips• time resolution is divided by 2
• dimple readout : 626ps (33p.e.)
626ps• side readout : 316ps (~50p.e.)

316ps