ILC IR Hall Comparison Table by sofiaie

VIEWS: 13 PAGES: 13

									BDS CFS assumptions for Valencia                                                               September 29, 2006/October 6, 2006

                                          CFS assumption for 14/14 BDS
                                           For Valencia cost estimate

Disclaimer:
The layout presented here (BDS with two IRs in 14/14 configuration, no service tunnel, alcoves in main tunnel) could significantly
change before or at Valencia. The factors which may affect the change: a) consideration of central injector complex, which may allow
sharing of BDS shafts with DR, and presence of service tunnel for injector linac, which may allow to pass the full service tunnel
through entire BDS; b) ongoing considerations of single IR with push-pull arrangement, which would remove one of the BDS
branches; c) considerations of hybrid BDS system (only in case of single IR) where the curved part (E-collimation and FF) would be
configured for 1TeV CM and straight part (beta-collimation, diagnostics) for 500GeV CM.




Overall layout and its features

General features of the BDS CFS configuration
   • Two IPs at z=0, with transverse separation = 28.4m
   • Common IR hall ~110m (L) x 25m (W) (see section below for details)
   • IR hall shafts equipped with elevator and stairs
   • BDS tunnel can be 4m in diameter
   • Alcoves 4.5*6m every 100m in BDS tunnel, no service tunnel
   • Halls for dump cooling system 35*20m
   • Small 0.8m boreholes for lasers near laser wire, upstream and downstream diagnostics
   • Long muon walls (9m & 18m) replaced by single 5m wall, passages near muon walls (main and spare one) are full length
   • 9m machine access shaft in the “BDS triangle” with service cavern at the bottom
   • Shortened extraction line

This conceptual layout is shown on the picture on the next page.




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Figure showing layout of BDS beamlines and also a conceptual layout of tunnels halls, alcoves and shafts. The insert on the right
show the IR hall and beam dump service caverns. The actual CFS layout may be different and is subject for optimization by BDS and
CFS. High resolution version of this layout is here.

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IR Hall Specifications

The table below collects all requirements of the detector concepts to the collider hall, shafts, cranes and surface building, and
determines a single configuration for surface assembly scenario, to be evaluated for Valencia cost. The configurations A and B have
been pre-evaluated by CFS group and the Config.A was found to be less expensive by 2.6%. Although “A” may have some impact on
schedule, it has advantage that the cranes remain available for use after installation and that it might be more suitable for making the
detector self shielded.
  For Valencia cost estimate, it is suggested to choose Config.A, with a note that further adjustments may be needed later.

Item                      SiD             LDC                   GLD           CMS            Vancouver         For Valencia   Config.B       Determined
                                                                                             WBS               Config.A       (for single    by
                                                                                             (for each hall)   (for single    common hall)
                                                                                                               common hall)
                                                     Parameters that define the underground hall volume
IR Hall Area(m)           28x48           30x45                25x55          26.5x53      32x72               25x110         25x110         Detector
(W x L)                   (18x48)                                             max                                                            concepts
Beam height above IR      7.5             8                    8.6            8.79m        8.6                 8.6            8.6            Concepts,
hall floor (m)                                                                                                                               BDS
IR Hall Crane             5m above top    19                    20.5          18m            30                20.5           20.5           Detector
Maximum Hook              of detector                                                                                                        concepts
Height Needed(m)
Largest Item to Lift in   100t            55t, 3m x 3m x        Pieces of     20t                              400t           100t           Detector
IR Hall (weight and       PACMAN          1,5m, E/HCAL end      yoke          instal tool                                                    concepts
dimensions)               shielding       cap quadrant          400t          7x4m
IR Hall Crane             100t/10t aux.   80t (2x40t)           400t          20t            20t x 2           400t +2*20t    100t +2*20t    Detector
                                                                                                                                             concepts
IR Hall Crane             TBD by          6                     TBD           5m             5                 14.5           12.5           CF&S group
Clearance Above           engineering                                                                          (includes      (includes
Hook to the roof (m)      staff                                                                                arch)          arch)
Resulted total size of    28x48x30        30x45x25              25x55x35      53x26x25       32x72x35          25x110x35      25x110x33      Concepts &
the collider hall (W x    (18x48x30)                                                                                                         CF&S group
L x H)
                                           Parameters that define dimensions of the IR hall shaft and the shaft crane
Largest Item; Heaviest    Coil package    Central Part ~2000t; 270t coil     1950t                               9*9m         4*16m          Detector
item to Lower             600t – size     12-14m x 7m;          9*9m                                             400t         2000t          concepts
Through IR Shaft          End-dors                              Iron-15m
(weight and               2000t
dimensions)               each/halfs


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IR Shaft Size(m)           9 may work       ⌀18,4 (16x9)         20 Surface    20.4m          15                16             20              Detector
                                                                 16 Hybrid                                                                     concepts
IR shaft fixed surface     1kt *            2kt * 1.5years?      2kt*1.5yr/    2kt * 1year    1kt * 1.5years?   None           2kt* 1.5years   Detector
gantry crane. If rented,   1.5years?                             400t                                                                          concepts
duration
Surface hall crane                          Yes                                                                 Yes            Yes             Detector
should serve IR shaft                                                                                                                          concepts
Other shafts near IR       TBD              Yes                                Yes            9m in service     No             No              Detector
hall for access                                                                12m            cavern, one per                                  concepts &
                                                                                              two halls                                        BDS area
Elevator and stares in     Cost decision    ?                                  no             No                Yes            Yes             Detector
collider hall shaft                                                                                                                            concepts &
                                                                                                                                               BDS area
                                         Parameters that define dimensions of the surface assembly building and its crane
Surface Assembly           TBD             30 x 60                TBD           23.5 x 93     25 x 100          25x200         25x200          Detector
Building Area(m)                                                                inner,                                                         concepts
(W x L )                                                                        23.5 x 140
                                                                                outer
Largest Item               100t            70t *;7,5x7                          120t 13x7                       400t           100t            Detector
To Lift in SurfAsm.                        inner vac tank                       inner vac                                                      concepts
Bldg.                                      60t one coil module                  tank
(weight and                                55t; 3m x 3m x                       60t one coil
dimensions)                                1,5m E/HCAL end                      module
                                           cap quadrant
Surface Assembly           100t/10t aux.   2x80t*                 400t          80t x 2       80t x 2           400t + 2*20t   100t + 2*20t    Detector
Crane                      (TBD)           min 2x60t                                                                                           concepts
SurfAsm. Crane             20m TBD         19 m *                               18.3 m        18                18             18              Detector
Maximum Hook                                                                                                                                   concepts
Height Needed(m)
SurfAsm. Crane             ME/Civil to      5 m to ceiling*                    5.7 m to       5                 8              6               CF&S group
Clearance Above            determine                                           outside
Hook to the roof (m)
Resulted volume of                          30 x 60 x 24                       23.5 x 100     25 x 100 x 23     25 x 200 x26   25 x 200 x24    Concepts &
surface assembly                                                               x 23.5 outer                                                    CF&S group
building (m)
(W x L x H)
                                             Parameters that define crane access area and clearance around detector
SurfAsm. crane             CG of load on    56 x 28                            19 x 92 m                      (20x102m?)       (20x102m?)      Detector
accessible area            150ton trailer                                                                     15 x 184 m       20.5 x 192 m    concepts &
(needed) / available                                                                                                                           CFS


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(m)
(W x L)
IR hall crane             TBD             28 x 41                         17 x 42                        (20x102m?)      (20x102m?)      Detector
accessible area                           min 25 x 35*                                                   19 x 96 m       22 x 98 m       concepts &
(needed) / available                                                                                                                     CFS
(m)
(W x L)
Maximum Detector                          16 m                            16.9                                                           Detector
Height(m)                                                                                                                                concepts
Detector Diameter (m)     12.9            13 m               15.3         16m                                                            Detector
                                                                                                                                         concepts
Minimum Detector                           15x18.4x16                                                                                    Detector
Clearance (m)                             (without scaffold +                                                                            concepts
(W x L x H)                               3m each side)
                                             FILL IN OTHER IMPORTANT PARAMETERS WHICH ARE MISSING
Electronic hut size                       ~18 x 9 x 10m
Electronic hut location                   TBD. Possibly,
                                          connected to the
                                          side of detector if it
                                          is self shielded
When the electronic                       After assembly of
hut is installed                          detector
underground

* means „need further discussion with experts‟

For reference, data for CERN ATLAS detector: Diameter 25 m; Barrel toroid length 26 m; End-cap end-wall chamber span 46 m; Overall weight 7000 Ton
ATLAS IR hall: Length = 55 m ; Width= 32 m ; Height= 35 m

Other specifications:
Collider hall floor suitable for use of air-pads and move of 15kt objects – floor covered with ~5cm steel plates welded together.




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Tunnel widening for muon walls
The tunnel widening for each muon wall should be configured to accommodate full 18m and 9m walls. The sizes of the widening
should allow passage, in the assumption that the walls penetrate into the tunnel by about 0.6m on each size. Therefore, the suggested
size of the widening is 25*6*5m (L*W*H) for 18m walls (total of four), and 15*6*5m for 9m walls (total of four).




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Laser boreholes and Surface building for laser equipment
The small 0.8m boreholes (total of six) for laser pipes are located at these coordinates [x,y] m:
      Polarimeter laser boreholes at BSY: [±1650, 14];
      Polarimeter laser boreholes in extraction line: [±162, 2];
      Diagnostics laser wire boreholes: [±2270, 16]

Above each borehole, a surface building should be built to house laser equipment. Sizes and arrangement of the building is shown
below. There are total of six such buildings.




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Alcoves floor plan
Alcoves of the size 9*3m and 4.5*6m are considered. The picture shows 4.5*6m alcove.




Beam dump service caverns floor plan
The requirements for the cavern (size of 20*35m^2 or of ~3000m^3, etc) are described in details in the BDS Beam dump parameters
document and in the further memos of Beam Dump technical group. There are six such caverns.

Floor plan of service cavern in the BDS triangle
INSERT DETAILS HERE.




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Power system in BDS
   The latest table from Paul Bellomo is shown below. The table corresponds to 1TeV CM. The numbers for 500GeV CM are
   approximately four times lower.


                                                                                                                      Sum of
                                  Sum of      Sum of Total Sum of Total Sum of Total Sum of Total Sum of Total       Required      Sum of
                                  Magnet        Magnet      Cable Loss   PS Loss to   PS Loss to of All Losses      Water Flow    Expected
Area             Section          Quantity    Power (kW)      (kW)        Air (kW)    Water (kW)     (kW)             (gpm)      Running kVA

BDS              e- Common           71           1,409           55            68           152         1,684          57           1,981

                 e+ Common           71           1,409           55            68           152         1,684          57           1,981

                 e- 14mr1           578           2,984          239           207           277         3,706         105           4,360

                 e+ 14mr1           578           2,984          239           207           277         3,706         105           4,360

                 e- 14mr2           643           3,043          241           216           277         3,777         105           4,444

                 e+ 14mr2           643           3,043          241           216           277         3,777         105           4,444

BDS Total                          2,584         14,872         1,070          982           1,410       18,333        534           21,569

Grand Total                        2,584         14,872         1,070          982           1,410       18,333        534           21,569



From this table, the following powers are defined as parameters (to be used on next page):

PML = 14.872 MW (name mnemonics: Power from Magnets to LCW)
PCA = 1.070 MW (Cables to Air)
PPA = 0.982 MW (PS to Air)
PPL = 1.410 MW (PS to LCW)




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LCW cooling water plant in BDS
Based on the information from the previous table, the suggested configuration of the cooling plan is described below:
                                                                                Cooling plant near shaft in Cooling plant near shaft
load, MW                                                                        e- of BDS triangle          in e+ of BDS triangle
500GeV/CM:
  main or tune-up dump                                                                                 11                          11
  BDS magnets& PS to water = 0.5*(PML+PPL)/4                                                        2.035                       2.035
Add for 1TeV/CM:
  main or tune-up dump                                                                                  7                           7
  BDS magnets & PS to water = 0.5*(PML+PPL)*3/4                                                     6.106                       6.106
Total                                                                                              26.141                      26.141
Default is to install all cooling capacity for 1TeV. Installation of only 500GeV CM capacity can be discussed, and if so, the
information on the cost should be considered together with procedures and expenses needed to upgrade the system to 1TeV capacity.

Chilled cooling water plant in BDS
Based on the information from the previous table, the suggested configuration of the cooling plan is described below:

load, MW                                          Cooling plant capacity
500GeV/CM:
BDS PS to water = 0.5*PPA/4                                                  0.245
Add for 1TeV/CM:
BDS PS to water = 0.5*PPA*3/4                                                0.735
Total                                                                         0.98
Default is to install all cooling capacity for 1TeV. Installation of only 500GeV CM capacity can be discussed, and if so, the
information on the cost should be considered together with procedures and expenses needed to upgrade the system to 1TeV capacity.

Air cooling system in BDS
Air temperature stabilization will be performed with fan-coils using incoming process water as input. The main load to air is from
cables (about 1.07MW at 1TeV CM).




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Description of access in BDS tunnels
These requirements determine placement of beamlines with respect to the tunnel.

BDS beamlines should be accessible from IR halls, on the internal side of “BDS triangle” so that accessing the beamline does not
require crossing the extraction lines.

The main extraction lines should be accessible along the external side of the beamline, without the need to cross the beamline.

Walk-around passes in the tunnel widening for muon walls (which penetrate by 0.6m towards the tunnel).

Accessible, during collider run, space in the service cavern under the 9m access shaft in the “BDS triangle”.




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Environmental requirements
List of requirement known to date which may affect CF&S design. If any requirement has big cost impact, this needs to be analyzed.
    1) Air quality
            a. Stability of air temperature: 0.5degC over 1hour, 2degC over 24hours.
                      i. It is understood that stabilization will be done using fan coils and process water, without the use of chilled
                          water. (WHAT STABILITY CAN BE PROVIDED IN THIS ASSUMPTION?)
            b. Dust control in air should be provided (to increase life of power supplies, to ensure proper operation of magnet movers,
                 laser equipment, etc.)
                      i. May require air filtering
                     ii. Require sealing of concrete floor with rad hard sealant
            c. Humidity needs to be controlled, specs TBD by CFS
                      i. Tunnels may need to be water sealed
            d. Allowable noise (air pressure fluctuations, including audible band) may need to be specified, the specs are TBD.
            e. Absolute air temperature need to be set considering all factors, including the fact that elevated temperature increases
                 chances of failures of electronics and power supplies.
                      i. It is understood that chilled water will not be used for stabilization of air temperature, and the temperature may
                          be elevated to 85-105 degrees F.
            f. Gradient of temperature between magnets and supports and supports and rock need to be minimized.
            g. Gradient of temperature between BDS tunnel and collider hall should be avoided.
    2) Low Conductivity Water quality
            a. Stability of water temperature: 0.1degC over 1hour, 0.5degC over 24hours
                      i. (Tentative: this stability could be provided with better controllers for very small cost impact. TBC.)
            b. Pressure ripple in the frequency band (1-1000Hz) need to be smaller than (TBD). We need to determine a suitable way
                 to specify these requirements (e.g., would psi2/Hz be appropriate).
            c. Vibration possibly carried by cooling water pipes or produced by pumps need to be minimized to meet specs on
                 stability, discussed below
            d. Absolute water temperature need to be set considering all factors, including the fact that elevated temperature increases
                 chances of failures of electronics and power supplies.
    3) Specs for vibration stability in BDS region are suggested in [3]. This roughly translates to BDS floor stability requirements of
        less than 10nm integrated above 1Hz, which includes preexisting noise of the site plus any additional vibration created by
        facilities. (Note that suggested stability specs for linac region are about three times as loose). These numbers are tentative.
    4) Specs for slow ground stability can be set if it would be clear how they are used in CFS design.



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References

[1] Partly obsolete: BDS Underground Requirements, http://www-
project.slac.stanford.edu/ilc/acceldev/beamdelivery/rdr/docs/bds_underground_requirements.doc
[2] Partly obsolete: Facility needs for NLC Beam Delivery, http://www-
project.slac.stanford.edu/lc/bdir/engineering/Facilities_needs_for_NLC_Beam_Delivery_Rev1-7.doc
[3] Issues of Stability and Ground Motion in ILC, SLAC-PUB-11661, http://www.slac.stanford.edu/pubs/slacpubs/11000/slac-pub-
11661.html
[4] Partly obsolete: BDS Environmental Requirements, http://www-
project.slac.stanford.edu/ilc/acceldev/beamdelivery/rdr/docs/bds_environmental_requirements.doc




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