ATLAS Silicon Tracker
Evaporative Cooling System
G. Hallewell RAL/CPPM
Version 1.1 January 16, 2000
Refers to ATLAS Services Inventory ATL-IC-EN-005
(created 01.03.00, modified 27.06.00)
and more recently to RAL Services Cross Section
Drawings
AO-TB-0049-166-00-D è AO-TB-0049-170-00-D (last
rev 02.11.00)
This
note is intended as an aid to the calculation of pressure drops in the coolant
distribution system between the evaporative cooling system flow control
regulators, and the evaporation pressure-defining regulators. The regulators
and back-pressure regulators are to be situated on racks on the ATLAS service
platform, roughly in the location of connections at PPB3. This latest version
takes account of the new insert-able pixel system service routings. Certain
tube lengths are different than in the previous version.
It
is assumed that the flow control regulators will be pre-cooled either with
liquid, or with counter-evaporated C3F8 fluid, and that
the C3F8 liquid destined for the evaporative cooling of the
SCT and pixel modules will arrive in the region of PPB1 at a temperature around
–20°C.
The
circuit tubing is divided into nine zones as follows:
(1) Liquid Supply Outside Magnet (pre-cooled to –20°C)
(2) Liquid Supply: PPB/F3 è PPB/F2 (pre-cooled to –20°C)
(3) Liquid Supply: PPB/F2 è PPB/F1 (pre-cooled to –20°C)
(4) Liquid Supply: PPB/F1 è detectors (pre-cooled to –20°C)
(5) On-detector evaporation zone (not considered here)
(6) Vapor return detectors è
PPB/F1
(length = 0.5 - 2 m: partly within thermal shields)
(7) Vapor Return: PPB/F1 è PPB/F2
(tube bundle insulation surface temperature above local dewpoint)
(8) Vapor Return: PPB/F2 è PPB/F3 (length = 12 m) [was 20m:
change]
(tube bundle insulation surface temperature above local dewpoint)
(9) Vapor Return Outside Magnet (length = 12 m)
(tube
bundle insulation surface temperature
above local dewpoint)
Note
that all bundles are subject to change. There has already been a reduction in
the number of cooling channels for the pixel detector, which is not yest
reflected in the drawings of the above reference.
Mass
flow rates are based on an effective enthalpy of ~90 J/gm for C3F8
evaporating around – 25°C. A
pre-cooling temperature of –20°C is
inserted as a target.
(1)
SCT Barrel
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube
diameter and length in various Parts of the Cooling Circuits.
|
SCT Barrel
Layer |
6 |
5 |
4 |
3 |
|
No. structures to cool |
14 |
12 |
10 |
8 |
|
No. Liquid Inputs |
28 |
24 |
20 |
16 |
|
No. Vapor Returns |
14 |
12 |
10 |
8 |
|
Power / Liquid Input (W) |
240 |
240 |
240 |
240 |
|
Power / Vapor Exhaust (W) |
480 |
480 |
480 |
480 |
|
Flow rate per
liquid supply (gs-1) |
2.7 |
2.7 |
2.7 |
2.7 |
|
Liq. Tube Inner Diameter Zone (1): (mm) @ -20°C l = 12m |
3 |
3 |
3 |
3 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C L = 12 m PPB2èPPB3 |
3 |
3 |
3 |
3 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C L = 5.5 m PPB1èPPB2 |
3 |
3 |
3 |
3 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C l= 0.86 m (capillary: Therm Encè PPB1 |
1 |
1 |
1 |
1 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C l = 0.35m (capillary inside thermal enc.) |
1 |
1 |
1 |
1 |
|
Liquid
cooling tracer line diameter (mm) @ -20°C flow rate not
known, maybe evap |
6 |
6 |
6 |
6 |
|
Flow rate per
vapor return (gs-1) |
5.4 |
5.4 |
5.4 |
5.4 |
|
Vap.Tube Diameter, Zone (6) (mm) l = 0.35 m (inside thermal vol) |
5 |
5 |
5 |
5 |
|
Vap.Tube Diameter, Zone (6) (mm) l = 0.86 m Therm Encè PPB1 |
7 |
7 |
7 |
7 |
|
Vap. Tube Diameter, Zone (7) (mm) l = 5.5 m
PPB1èPPB2 |
10 |
10 |
10 |
10 |
|
Vap. Tube Diameter, Zone (8) (mm) l = 12 m
PPB2èPPB3 |
15 |
15 |
15 |
15 |
|
Vap. Tube Diameter, Zone (9): (mm) l = 12 m |
15 |
15 |
15 |
15 |
(2)
SCT Disks
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
Disk Type |
A |
B |
|
No Disks |
14 |
4 |
|
No. structures to cool/disk |
4 |
4 |
|
No. Liquid Inputs/disk |
12 |
4 |
|
No. Vapor Returns/disk |
4 |
4 |
|
Total No Liquid Inputs |
168 |
16 |
|
Total No Vapor Returns |
56 |
16 |
|
Power per Liquid Input
(W) |
130 or 100 |
100 |
|
Power per Vapor Exhaust
(W) |
360 |
100 |
|
Flow rate per
liquid supply (gs-1) |
1.44 or 1.11 |
1.11 |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C, l =12m |
3 |
3 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, l =12m |
2 |
2 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, l =2.8 m |
2 |
2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l =1.5 m |
2 |
2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l =1.5 m (Assumes capillary) |
1 |
1 |
|
Liquid
cooling tracer diam(mm) @ -20°C (flow rate
not yet known, maybe evap) |
6 |
6 |
|
Flow rate per
vapor return (gs-1) |
4 |
1.11 |
|
Vap.Tube Diameter, Zone (6) (mm), l =1.5 m (inside thermal vol) |
5 |
5 |
|
Vap.Tube Diameter, Zone (6) (mm), l =1.5 m |
6 |
6 |
|
Vap. Tube Diameter, Zone (7) (mm), l =2.8 m |
8 |
8 |
|
Vap. Tube Diameter, Zone (8) (mm) l =12m |
11 |
11 |
|
Vap. Tube Diameter, Zone (9): (mm) l =12m |
11 |
11 |
(3)
Pixel Barrels 2,1
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
Pixel Barrel
Layer |
2 |
1 |
|
No. structures to cool |
56 |
42 |
|
No. Liquid Inputs |
28 |
21 |
|
No. Vapor Returns |
28 |
21 |
|
Power per Liquid Input
(W) |
216 |
216 |
|
Power per Vapor Exhaust
(W) |
216 |
216 |
|
Flow rate per
liquid supply (gs-1) |
2.4 |
2.4 |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C, L=100m (should be 12 m) |
4 |
4 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, L = 14 m PPB2 – PPB3 |
4 |
4 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, PPB2-PPF1 PPF1 – PPB 2 L = 2.5 m |
3 |
3 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, PPB2-PPF1 Thermal Enc è PPF1, L = 2.6 m |
2 |
2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, Inside Therm Enc, L =
0.5m, capillary |
1 |
1 |
|
Liquid
cooling tracer line diameter (mm) @ -20°C (flow rate
not yet known) |
6 |
6 |
|
Flow rate per
vapor return (gs-1) |
2.4 |
2.4 |
|
Vap.Tube Diameter, Zone
(6) (mm), Inside Therm Enc, L =
0.5m |
7 |
7 |
|
Vap. Tube Diameter, Zone
(7) (mm), Thermal Enc è PPF1, L = 2.6 m |
7 |
7 |
|
Vap. Tube Diameter, Zone
(7) (mm), PPF1- PPB2; L 1 = 2.5 m |
7 |
7 |
|
Vap. Tube Diameter, Zone
(8) (mm), PPB2 – PPB3 |
10 |
10 |
|
Vap. Tube Diameter, Zone
(9): (mm), L = 100m (should be 12 m) |
10 |
10 |
(4)
Pixel B layer
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
Pixel B
Layer |
|
|
No. structures to cool |
12 |
|
No. Liquid Inputs |
12 |
|
No. Vapor Returns |
12 |
|
Power per Liquid Input
(W) |
240 |
|
Power per Vapor Exhaust
(W) |
240 |
|
Flow rate per
liquid supply (gs-1) |
2.7 |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C L = 100m (should be 12 m) |
4 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, L =
20 m PPF2è PPF3 |
4 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, L = 2.5 m; PPF1 è PPB2 |
3 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, L = 2.1 m; Thermal Enclosure è PPF1 |
3 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, L = 0.5 Inside Therm. Enc
(capillary) |
1 |
|
Liquid
cooling tracer line diameter (mm) @ -20°C (flow rate
not yet known) |
6 |
|
Flow rate per
vapor return (gs-1) |
2.7 |
|
Vap.Tube Diameter, Zone (6) (mm), L = 0.5
m; Inside Thermal Enclosure |
8 |
|
Vap.Tube Diameter, Zone (6) (mm), L = 2.1
m; Therm. Enc è PPF1 |
8 |
|
Vap. Tube Diameter, Zone (7) (mm), L = 2.5
m; PPF1 è PPB2 |
8 |
|
Vap. Tube Diameter, Zone (8) (mm), L = 20 m
PPF2è PPF3 |
12 |
|
Vap. Tube Diameter, Zone (9): (mm) L = 100m
(should be 12 m) |
12 |
(5)
Pixel End Caps
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
No Disks |
10 |
|
No. structures to cool/disk |
6 |
|
No. Liquid Inputs/disk |
6 |
|
No. Vapor Returns/disk |
6 |
|
Total No Liquid Inputs |
60 |
|
Total No Vapor Returns |
60 |
|
Power per Liquid Input
(W) |
90 |
|
Power per Vapor Exhaust
(W) |
90 |
|
Flow rate per
liquid supply (gs-1) |
1 |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C, l = 12 m |
4 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, l = 14 m
PPB2èPPB3 |
4 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, l =2.5 m PPF1èPPB2 |
2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l = 2.6 m Thermal Enclosure è PPF1 |
2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l =0.3 m Inside Thermal Enclosure
(capillary) |
1 |
|
Liquid
cooling tracer line diameter (mm) @ -20°C |
6 |
|
Flow rate per
vapor return (gs-1) |
1 |
|
Vap.Tube Diameter, Zone (6) (mm); L1 = 0.3
m Inside Thermal Enclosure |
6 |
|
Vap.Tube Diameter, Zone (6) (mm); L1 = 1 m,
L2 = 2.6 m; Thermal Enclosure è PPF1 |
6 |
|
Vap. Tube Diameter, Zone (7) (mm) l = 2.5 m
PPF1èPPB2 |
6 |
|
Vap. Tube Diameter, Zone (8) (mm), l = 14 m;
PPB2èPPB3 |
8 |
|
Vap. Tube Diameter, Zone (9): (mm); L = 12 m |
8 |
(6)
Phase 2 Demonstrator: SCT layers 6,5,4&3
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
SCT Barrel
Layer |
6 |
5 |
4 |
3 |
Tube choice |
|
No. structures to cool |
2 |
2 |
1 |
1 |
- |
|
No. Liquid Inputs |
4 |
4 |
2 |
2 |
- |
|
No. Vapor Returns |
2 |
2 |
1 |
1 |
- |
|
Power / Liquid Input (W) |
240 |
240 |
240 |
240 |
- |
|
Power / Vapor Exhaust (W) |
480 |
480 |
480 |
480 |
- |
|
Flow rate per
liquid supply (gs-1) |
2.7 |
2.7 |
2.7 |
2.7 |
- |
|
Liq. Tube Inner Diameter Zone (1): (mm) @ -20°C l = 12m |
3 |
3 |
3 |
3 |
5/3 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C L = 12 m PPB2èPPB3 |
3 |
3 |
3 |
3 |
5/3 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C L = 5.5 m PPB1èPPB2 |
3 |
3 |
3 |
3 |
5/3 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C l= 0.86 m (capillary: Therm Encè PPB1 |
1 |
1 |
1 |
1 |
0.8 mm Cap |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C l = 0.35m (capillary inside thermal enc.) |
1 |
1 |
1 |
1 |
0.8 mm Cap |
|
Liquid
cooling tracer line diameter (mm) @ -20°C flow rate not
known, maybe evap |
6 |
6 |
6 |
6 |
6/8 |
|
Flow rate per
vapor return (gs-1) |
5.4 |
5.4 |
5.4 |
5.4 |
- |
|
Vap.Tube Diameter, Zone (6) (mm) l = 0.35 m (inside thermal vol) |
5 |
5 |
5 |
5 |
8/6 |
|
Vap.Tube Diameter, Zone (6) (mm) l = 0.86 m Therm Encè PPB1 |
7 |
7 |
7 |
7 |
10/8 |
|
Vap. Tube Diameter, Zone (7) (mm) l = 5.5 m
PPB1èPPB2 |
10 |
10 |
10 |
10 |
12/10 |
|
Vap. Tube Diameter, Zone (8) (mm) l = 12 m
PPB2èPPB3 |
15 |
15 |
15 |
15 |
16/14 |
|
Vap. Tube Diameter, Zone (9): (mm) l = 12 m |
15 |
15 |
15 |
15 |
16/14 |
(7)
Phase 2 Demonstrator: Pixel Barrel 2,1
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
Pixel Barrel
Layer |
2 |
1 |
Tube choice |
|
No. structures to cool |
4 |
3 |
- |
|
No. Liquid Inputs |
4 |
3 |
- |
|
No. Vapor Returns |
4 |
3 |
- |
|
Power per Liquid Input
(W) |
216 |
216 |
- |
|
Power per Vapor Exhaust
(W) |
216 |
216 |
- |
|
Flow rate per
liquid supply (gs-1) |
2.4 |
2.4 |
- |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C, L=100m (should be 12 m) |
4 |
4 |
6/4 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, L = 14 m PPB2 – PPB3 |
4 |
4 |
6/4 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, PPB2-PPF1 PPF1 – PPB 2 L = 2.5 m |
3 |
3 |
6/4 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, PPB2-PPF1 Thermal Enc è PPF1, L = 2.6 m |
2 |
2 |
4/2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, Inside Therm Enc, L =
0.5m, capillary |
1 |
1 |
0.8 mm Cap |
|
Liquid
cooling tracer line diameter (mm) @ -20°C (flow rate not yet known) |
6 |
6 |
8/6 |
|
Flow rate per
vapor return (gs-1) |
2.4 |
2.4 |
- |
|
Vap.Tube Diameter, Zone
(6) (mm), Inside Therm Enc, L =
0.5m |
7 |
7 |
10/8 |
|
Vap. Tube Diameter, Zone
(7) (mm), Thermal Enc è PPF1, L = 2.6 m |
7 |
7 |
10/8 |
|
Vap. Tube Diameter, Zone
(7) (mm), PPF1- PPB2; L 1 = 2.5 m |
7 |
7 |
10/8 |
|
Vap. Tube Diameter, Zone
(8) (mm), PPB2 – PPB3 |
10 |
10 |
12/10 |
|
Vap. Tube Diameter, Zone
(9): (mm), L = 100m (should be 12 m) |
10 |
10 |
12/10 |
(8)
Phase 2 Demonstrator: Pixel B layer
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
Pixel B
Layer |
|
Tube Choice |
|
No. structures to cool |
2 |
- |
|
No. Liquid Inputs |
2 |
- |
|
No. Vapor Returns |
2 |
- |
|
Power per Liquid Input
(W) |
280 |
- |
|
Power per Vapor Exhaust
(W) |
280 |
- |
|
Flow rate per
liquid supply (gs-1) |
3.1 |
- |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C L = 100m (should be 12 m) |
4 |
6/4 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, L =
20 m PPF2è PPF3 |
4 |
6/4 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, L = 2.5 m; PPF1 è PPB2 |
3 |
5/3 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, L = 2.1 m; Thermal Enclosure è PPF1 |
3 |
5/3 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, L = 0.5 Inside Therm. Enc
(capillary) |
1 |
0.8 Cap |
|
Liquid
cooling tracer line diameter (mm) @ -20°C (flow rate
not yet known) |
6 |
6/8 |
|
Flow rate per
vapor return (gs-1) |
3.1 |
- |
|
Vap.Tube Diameter, Zone (6) (mm), L = 0.5
m; Inside Thermal Enclosure |
8 |
10/8 |
|
Vap.Tube Diameter, Zone (6) (mm), L = 2.1
m; Therm. Enc è PPF1 |
8 |
10/8 |
|
Vap. Tube Diameter, Zone (7) (mm), L = 2.5
m; PPF1 è PPB2 |
8 |
10/8 |
|
Vap. Tube Diameter, Zone (8) (mm), L = 20 m
PPF2è PPF3 |
12 |
14/12 |
|
Vap. Tube Diameter, Zone (9): (mm) L = 100m
(should be 12 m) |
12 |
14/12 |
(9)
Phase 2 Demonstrator: SCT End Caps
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
Disk Type |
A |
Tube Choice |
|
No Disks |
1/4 |
- |
|
No. structures to cool/disk |
1 |
- |
|
No. Liquid Inputs/disk |
3 |
- |
|
No. Vapor Returns/disk |
1 |
- |
|
Total No Liquid Inputs |
3 |
- |
|
Total No Vapor Returns |
1 |
- |
|
Power per Liquid Input
(W) |
130 or 100 |
- |
|
Power per Vapor Exhaust
(W) |
360 |
- |
|
Flow rate per
liquid supply (gs-1) |
1.44 or 1.11 |
- |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C, l =12m |
3 |
5/3 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, l =12m |
2 |
4/2 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, l =2.8 m |
2 |
4/2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l =1.5 m |
2 |
4/2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l =1.5 m (Assumes capillary) |
1 |
0.8 Cap |
|
Liquid
cooling tracer diam(mm) @ -20°C (flow rate
not yet known, maybe evap) |
6 |
8/6 |
|
Flow rate per
vapor return (gs-1) |
4 |
- |
|
Vap.Tube Diameter, Zone (6) (mm), l =1.5 m (inside thermal vol) |
5 |
8/6 |
|
Vap.Tube Diameter, Zone (6) (mm), l =1.5 m |
6 |
8/6 |
|
Vap. Tube Diameter, Zone (7) (mm), l =2.8 m |
8 |
10/8 |
|
Vap. Tube Diameter, Zone (8) (mm) l =12m |
11 |
12/10 |
|
Vap. Tube Diameter, Zone (9): (mm) l =12m |
11 |
12/10 |
(10)
Phase 2 Demonstrator: Pixel End Caps
Summary: Number of Cooling Channels, Channel
Flow Rates, Coolant temperature.
Tube diameter and length in various Parts of the
Cooling Circuits.
|
No. structures to cool |
1 |
Tube Choice |
|
Total No Liquid Inputs |
1 |
- |
|
Total No Vapor Returns |
1 |
- |
|
Power per Liquid Input
(W) |
90 |
- |
|
Power per Vapor Exhaust
(W) |
90 |
- |
|
Flow rate per
liquid supply (gs-1) |
1 |
- |
|
Liq. Tube Inner Diameter, Zone (1): (mm) @ -20°C, l = 12 m |
4 |
6/4 |
|
Liq. Tube Diameter, Zone (2): (mm) @ -20°C, l = 14 m
PPB2èPPB3 |
4 |
6/4 |
|
Liq. Tube Diameter, Zone (3) (mm) @ -20°C, l =2.5 m PPF1èPPB2 |
2 |
3/2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l = 2.6 m Thermal Enclosure è PPF1 |
2 |
3/2 |
|
Liq. Tube Diameter, Zone (4): (mm) @ -20°C, l =0.3 m Inside Thermal Enclosure
(capillary) |
1 |
0.8 Cap |
|
Liquid
cooling tracer line diameter (mm) @ -20°C |
6 |
8/6 |
|
Flow rate per
vapor return (gs-1) |
1 |
- |
|
Vap.Tube Diameter, Zone (6) (mm); L1 = 0.3
m Inside Thermal Enclosure |
6 |
8/6 |
|
Vap.Tube Diameter, Zone (6) (mm); L1 = 1 m,
L2 = 2.6 m; Thermal Enclosure è PPF1 |
6 |
8/6 |
|
Vap. Tube Diameter, Zone (7) (mm) l = 2.5 m
PPF1èPPB2 |
6 |
8/6 |
|
Vap. Tube Diameter, Zone (8) (mm), l = 14 m;
PPB2èPPB3 |
8 |
10/8 |
|
Vap. Tube Diameter, Zone (9): (mm); L = 12 m |
8 |
10/8 |
(C)
Tube Bundle Requirements for Phase (2) Demonstrator
This is based on the number of tubes accommodated in
each type of tube bundle proposed by Andy Nichols in the most recent service
diagrams.
(1)
SCT Barrel
Structure
Tube I/O requirement
|
No
C3F8 Inputs |
No
C3F8 Outputs |
|
12 |
6 |
Bundle
Configuration in A0-TB-0049-169-00D (18.09.2000)
|
No
C3F8 liquid tubes |
No
precooling Tubes |
|
6 |
2 |
Output
Bundle
|
No
C3F8 vapor tubes |
No
precooling Tubes |
|
6 |
0 |
Requirement
2 x input bundles,
1 x
output bundle (tube diameter progressive variation as in table (6).
Flow Regs: 12: Backpressure
Regs: 6
(2)
Pixel Barrel, layers 1 & 2,
Structure
Tube I/O requirement
|
No
C3F8 Inputs |
No
C3F8 Outputs |
|
6* |
6* |
·
Note: this
is less than in the original Phase 2 proposal, but since then, the numbers of
pixel staves has reduced for an insertable layout. Also 6 tubes fits better the
present tube bundle modularity.
Bundle
Configuration in A0-TB-0049-166-00D (02.11.2000)
|
No
C3F8 liquid tubes |
No
precooling Tubes |
|
6 |
2 |
Output
Bundle
|
No
C3F8 vapor tubes |
No
precooling Tubes |
|
2 |
0 |
Requirement
1 x input bundles,
bundle
(tube diameter progressive variation as in table (7))
Flow Regs: 6: Backpressure
Regs: 6
(3)
Pixel B Layer
Structure
Tube I/O requirement
|
No
C3F8 Inputs |
No
C3F8 Outputs |
|
1 |
1 |
Bundle
Configuration in A0-TB-0049-167-00D (03.11.2000)
|
No
C3F8 liquid tubes |
No
precooling Tubes |
|
3 |
2 |
Output
Bundle
|
No
C3F8 vapor tubes |
No
precooling Tubes |
|
3 |
0 |
Requirement
1 x input bundle,
1 x
output bundle (tube diameter progressive variation as in table (8).
Note:
Though only one
tube of three is used in the first stage, it is probably worth building this
bundle.
It might also serve later for tests of structures.
Flow Regs: 1: Backpressure
Regs: 1
(4)
Forward SCT
Structure
Tube I/O requirement
|
No
C3F8 Inputs |
No
C3F8 Outputs |
|
3 |
1 |
Bundle
Configuration in A0-TB-0049-170-00D (09.11.2000)
|
No
C3F8 liquid tubes |
No
precooling Tubes |
|
22 |
2 |
Output
Bundle
|
No
C3F8 vapor tubes |
No
precooling Tubes |
|
9 |
0 |
Requirement
Suggest one extra pixel B layer bundle pair (as
in (3) above) is made for forward
SCT
structure tests.
Flow Regs: 3: Backpressure
Regs: 1
(5)
Pixel Disks
Structure
Tube I/O requirement
|
No
C3F8 Inputs |
No
C3F8 Outputs |
|
1 |
1 |
Bundle
Configuration in A0-TB-0049-168-00D (03.11.2000)
|
No
C3F8 liquid tubes |
No
precooling Tubes |
|
6 |
2 |
|
No
C3F8 liquid tubes |
No
precooling Tubes |
|
3 |
0 |
Output
Bundle: Type (1)
|
No
C3F8 vapor tubes |
No
precooling Tubes |
|
7 |
2 |
Output
Bundle: Type (2)
|
No
C3F8 vapor tubes |
No
precooling Tubes |
|
4 |
0 |
Requirement
Suggest using spare tubes in B layer bundle (as
in (3) above).
Flow Regs: 1: Backpressure
Regs: 1
Regulator
Total (1) è (5)
Flow Regs: 23: Backpressure
Regs: 15
Other
Regulator Requirements
Structure Testing
Flow Regs: 1: Backpressure
Regs: 1
C3F8 Liquid Precooling
Flow Regs: 1: Backpressure
Regs: 1
Line Cooling
Flow Regs: 1: Backpressure
Regs: 1
Regulator Grand Total
Flow Regs: 26: Backpressure
Regs: 18