Specs for the S2 and L2 Calorimeters

Nov 1999

See Keith Riles' specs for the tracking systems.

[Large | Small ]

L2 Calorimetry & Muons

Basics: (all distances in cm)

• segmentation is 20 x 20 mrad

EM CAL

• radiator is 4 mm Pb; sensitive material is 1 mm scintillator with 0.5 mm gap (T4VEK??).
• 40 layers

EM CAL Barrel

Component	Rmin	Thickness	Rmax	Zmin	Zmax	material	# Layers
inner wall	193	3	196	0	325	Al	-
radiator	-	0.4	-	0	322	Pb	40
gap	-	0.05	-	0	322	T4VEK
sensitive	-	0.1	-	0	322	scintillator	40
gap	-	0.05	-	0	322	T4VEK??	40
electronics	220	7	227	0	322		-
end ring support	196	3	227	322	325	Al	-

EM CAL Endcap

Component	Rmin	Rmax	Zmin	Thickness	Zmax	material	# Layers
inner support disk	25	188	295	2.5	297.5	Al	-
inner support tube	25	29	295	4	328	Al	-
radiator	29	184	-	0.4	-	Pb	40
gap	29	184	-	0.05	-	T4VEK	40
sensitive	29	184	-	0.1	-	scintillator	40
gap	29	184	-	0.05	-	T4VEK??	40
electronics	29	184	321.5	6.5	328		-
outer support tube	184	188	295	4	328	Al	-

 

HAD CAL

• radiator is 8 mm Pb; sensitive material is 2 mm scintillator with 0.5 mm gap (T4VEK??).
• 40 layers

HAD CAL Barrel

Component	Rmin	Thickness	Rmax	Zmin	Zmax	material	# Layers
inner wall	229	4	233	0	466	Al	-
radiator	-	0.8	-	0	466	Pb	120
gap	-	0.05	-	0	466	T4VEK	120
sensitive	-	0.2	-	0	466	scintillator	120
gap	-	0.05	-	0	466	T4VEK??	120
electronics	365	10	375.0	0	466		-
end ring support	233	5	375.	466	471	Al	-

HAD CAL Endcap

Component	Rmin	Rmax	Zmin	Thickness	Zmax	material	# Layers
inner support disk	25	225	330	4	334	Al	-
inner support tube	25	31	330	6	476	Al	-
radiator	31	221	-	0.8	-	Pb	120
gap	31	221	-	0.05	-	T4VEK
sensitive	31	221	-	0.2	-	scintillator	120
gap	31	221	-	0.05	-	TV4VEK??	120
electronics	31	221	466	10	476		-
outer support tube	221	225	330	4	476	Al	-

Coil

Component	Rmin	Rmax	Zmin	Zmax	material
inner wall	378	384	0	466	Al
coil pack	395	424	0	395	Al
outer wall	445	448	0	466	Al
end disk	378	448	461	466	Al

MU CAL

• radiator is 5 cm Fe; sensitive material is 3 cm gas.
• x, y strips 3 cm
• 10 layers

MU CAL Barrel

• outer radius = 645 cm

Component	Rmin	Rmax	Zmin	Zmax	material	# Layers
radiator	453	458	0	477	Fe	24
sensitive	458	461	0	477	gas	24

MU CAL Endcap

• outer z = 669 cm

Component	Rmin	Rmax	Zmin	Zmax	material	# Layers
radiator	25	645	477	482	Fe	24
sensitive	25	645	482	484	gas	24

LUM CAL

• radiator is 2 mm W; sensitive material is 300 mm Si on 1 mm G10 with 1.7 mm air gap.
• 50 layers

Component	Rmin	Rmax	Zmin	Thickness	Zmax	material	# Layers
inner support disk	5	22	295	1	296	Al	-
inner support tube	5	6	295	1	328	Al	-
radiator	6	22	-	0.2	-	W	50
sensitive	6	22	-	0.03	-	Si	50
G10	6	22	-	0.1	-	G10	50
air gap	6	22	-	0.17	-	air	50
electronics	6	22	321	7	328		-
outer support tube	22	23	295	1	328	Al	-

[Large | Small ]

S2 Calorimetry & Muons

Basics: (all distances in cm)

• segmentation is 13 x 13 mrad (1x1 cm on EM Cal at 90 degrees)

EM CAL

• radiator is 2 mm W; sensitive material is 300 mm Si on 1 mm G10 with 1.7 mm air gap.
• 50 layers

EM CAL Barrel

Component	Rmin	Thickness	Rmax	Zmin	Zmax	material	# Layers
inner wall	75	3	78	0	180	Al	-
radiator	-	0.2	-	0	180	W	50
sensitive	-	0.03	-	0	180	scintillator	50
G10	-	0.1	-	0	180	G10	50
air gap	-	0.17	-	0	180	air	50
electronics	103	7	110	0	180		-
end ring support	78	3	110	180	183	Al	-

EM CAL Endcap

Component	Rmin	Rmax	Zmin	Thickness	Zmax	material	# Layers
inner support disk	20	74	150	2.5	152.5	Al	-
inner support tube	20	24	150	4	183.5	Al	-
radiator	24	70	-	0.2	-	W	50
sensitive	24	70	-	0.03	-	Si	50
G10	24	70	-	0.1	-	G10	50
air gap	24	70	-	0.17	-	air	50
electronics	24	70	176.5	7	183.5		-
outer support tube	70	74	150	4	183.5	Al	-

Coil

Component	Rmin	Rmax	Zmin	Zmax	material
inner wall	113	118	0	178	Al
coil pack	129	158	0	178	Al
outer wall	179	182	0	178	Al
end disk	113	182	178	183	Al

HAD CAL

• radiator is 2 cm Cu; sensitive material is 0.5 cm scintillator, 0.05 cm gap.

HAD CAL Barrel

Component	Rmin	Thickness	Rmax	Zmin	Zmax	material	# Layers
inner wall	184	4	188	0	269	Al	-
radiator	-	2	-	0	269	Cu	38
gap	-	0.05	-	0	269	T4VEK	38
sensitive	-	0.5	-	0	269	scintillator	38
gap	-	0.05	-	0	269	T4VEK??	38
electronics	286.8	9.2	296	0	269		-
end ring support	184	5	296	269	271	Al	-

HAD CAL Endcap

Component	Rmin	Rmax	Zmin	Thickness	Zmax	material	# Layers
inner support disk	20	182	185	4	189	Al	-
inner support tube	20	26	185	6	297	Al	-
radiator	26	178	-	2	-	Cu	38
gap	26	178	-	0.05	-	T4VEK	38
sensitive	26	178	-	0.5	-	scintillator	38
gap	26	178	-	0.05	-	T4VEK??	38
electronics	26	178	287.8	9.2	297		-
outer support tube	178	182	185	6	297	Al	-

MU CAL

• radiator is 10 cm Fe; sensitive material is 2 cm gas.
• x, y strips 3 cm
• 10 layers

MU CAL Barrel

• outer r = 303 cm

Component	Rmin	Thickness	Rmax	Zmin	Zmax	material	# Layers
radiator	183	10	193	0	298	Fe	10
sensitive	193	2	195	0	298	gas	10

MU CAL Endcap

• outer z = 418 cm

Component	Rmin	Rmax	Zmin	Thickness	Zmax	material	# Layers
radiator	25	303	298	10	308	Fe	10
sensitive	25	303	308	2	310	gas	10

LUM CAL

• radiator is 2 mm W; sensitive material is 300 mm Si on 1 mm G10 with 1.7 mm air gap.
• 50 layers

Component	Rmin	Rmax	Zmin	Thickness	Zmax	material	# Layers
inner support disk	5	17	150	1	151	Al	-
inner support tube	5	6	150	1	182	Al	-
radiator	6	15	-	0.2	-	W	50
sensitive	6	15	-	0.03	-	Si	50
G10	6	15	-	0.1	-	G10	50
air gap	6	15	-	0.17	-	air	50
electronics	6	15	175	7	182		-
outer support tube	15	16	150	1	182	Al	-

Last Modified: 01/13/2004 12:37