# Presentation: 836518

## WBS 1.2.2 (Preradiator)

- 1.2.2.1    Chamber
- 1.2.2.2    Scintillator
- 1.2.2.3    Electronics
- 1.2.2.4    Mechanical
- 1.2.2.5    External Photon Veto
- 1.2.2.6    Pre-installation work at BNL
- 1.2.2.10  Management

- Toshio Numao
- January 18, 2005

## Preradiator

- Measures the direction of  rays with 25mr by
-       tracking an e−-e+ pair in the early shower.
- Total radiation length  2  (70 % of  converts).
- Consists of 4 2.2x2.2m2 (2x2m2 active region) quadrants.
- Each combination (scintillator+chamber+radiator)
-       is  0.035 r.l. thick.
- A photon veto system that is mounted in the same support structure surrounds the active region of
-       the preradiator.
- Chamber electronics will be mounted outside the
-       photon veto system.

## Numbers of Readout Channels

- Preradiator system = 4 Quadrants
- Quadrant                = 8 Modules
-   Module                = 8 chambers + 9 Scint. Planes (nx=4,ny=5)
-       Chamber          = 384 channels of anodes and cathodes
-       Scintillator p.  = 12 strips x 2 ends
-       Photon veto      = 45 Shashlyk modules
- Anode readout    = 4 x 8 x 8 x 384 =            98,304 channels
- Cathode readout = 4 x 8 x 8 x 384 =             98,304
- Scintillator readout   = 4 x 8 x (24 + 24) =      1536
- Photon veto readout = 4 x 8 x 45 =                  1440

- To the same PMT
- (4x3x6 fibers)

## Cost Summary

| WBS |  | Sum  | Material  | EDIA   | Mfg. Lab.  |
| --- | --- | --- | --- | --- | --- |
| 1.2.2 | Preradiator | 24,219 | 15,439 | 3,217 | 5,463 |
| 1.2.2.1 | Chamber | 4,322 | 1,569 | 325 | 1,452 |
| 1.2.2.2 | Scintillator | 3,102 | 2,141 | 326 | 725 |
| 1.2.2.3 | Electronics | 9,724 | 7,300 | 1,456 | 968 |
| 1.2.2.4 | Mechanical | 3,815 | 1,960 | 543 | 1,313 |
| 1.2.2.5 | Photon veto | 2,812 | 1,876 | 10 | 926 |
| 1.2.2.6 | Pre-installation | 607 | 300 | 173 | 134 |
| 1.2.2.10 | Management | 300 | 0 | 300 | 0 |

- The above table includes design and prototyping costs.

## Chamber (production)

|  | Num(req) | # of wk. | FTE phy | FTE eng | FTE tech | Lab. | Mat. |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Chamber | 278 (256) | 150 | 4.5 | 3.0 | 44.4 | 1,907 | 1,862 |
| Overseeing |  |  | 1.5 | 3.0 | 0 |  |  |
| Inspection |  |  |  |  | 1.2 |  |  |
| G10 mach. |  |  |  |  | 3 |  |  |
| Foil Lamin. |  |  | 0 | 0 | 3 |  |  |
| Frame const. |  |  | 0 | 0 | 3 |  |  |
| Stringing |  |  | 0 | 0 | 12 |  |  |
| Tension/rep. |  |  | 0 | 0 | 6 |  |  |
| Strip conn. |  |  |  |  | 6 |  |  |
| Cover inst. |  |  |  |  | 1.2 |  |  |
| Tests/misc. |  |  | 3 | 0 | 6 |  |  |
| Gas system | 1 |  | 0 | 0.5 | 1 | 45 | 272 |

- Chamber material: G10 sheets, wires, pins, sockets, foils
- Cost for chamber design+prototype: 85k+375k
-               gas-system                         : 43k+83k

## Scintillator (preradiator part)

|  | Number(req.) | # of wk | FTE ph | FTE en | FTE te | Lab. | Mat. |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Extruded sc | 13,200(11,000) | 33.76 | 0.68 | 2.18 | 18.45 | 685 | 742 |
| Production |  |  | 0 | 0.34 | 0.68 |  |  |
| Inspection |  |  | 0 | 0 | 0.68 |  |  |
| Tests |  |  | 0.68 | 0 | 0 |  |  |
| Plane fab. | 310(288) | 150 |  |  |  |  |  |
| Machining |  |  | 0 | 0 | 7.5 |  |  |
| Inspection |  |  | 0 | 0 | 0.6 |  |  |
| Glueing |  |  | 0 | 1.5 | 4.5 |  |  |
| Painting |  |  | 0 | 0 | 4.5 |  |  |
| WLS fiber | (50,000) |  | 1 |  | 3 | 90 | 700 |

- Material: Styron, dopents, N2, Run fee, Paint, Glue
- Other items:  PMT sets: 558k  $300/ch.
- Scintillator prototyping of $353k includes the cost of jigs and other tools.

## Electronics

**Anode readout**

**Cathode readout**

- L1

- L1

- HV

- 16ch

- 96ch

- 96ch

- Cathode adaptor

- 16ch

- $38/ch

- $32/ch

## Electronics (production)

|  | Number(req) | # of wk | FTE phy | FTE eng | FTE tech | Lab. | Mat. |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Chamber elec |  | 150 | 0 | 3 | 24.3 | 1270 | 6,633 |
| Anode adapt. | 7180(6144) |  | 0 | 0 | 4.5 |  |  |
| Anode readout | 1196(1024) |  | 0 | 1.5 | 7.5 |  |  |
| Cath. adapt. | 7180(6144) |  | 0 | 0 | 3 |  |  |
| Cath. readout | 1196(1024) |  | 0 | 1.5 | 7.5 |  |  |
| HV,LV,PS,cra. | 36(32) |  | 0 | 0 | 1.8 |  |  |
| PMT elect. | (1536) |  | 1 | 0 | 1 | 35 | 430 |

- Cost for chamber electronics design and prototype is 10-15 % of production cost.
- Here, “Adaptor card” includes cables. DAQ interface is in “HV,LV...”.
- PMT electronics is common to the other PMT/APD system.
- PMT cost for external PV appears in “External PV”.

## 1.2.2.4.1 Support plates (module assembly)

|  | Number(req) | No. of wk | FTE phy | FTE eng | FTE tech | Lab. | Mat. |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Module | 34(32) | 150 | 4.5 | 3 | 31.5 | 1,125 | 660 |
| Overseeing |  |  | 1.5 | 3 | 0 |  |  |
| Bolting layers |  |  | 0 | 0 | 0.75 |  |  |
| L-plate inst. |  |  | 0 | 0 | 1.5 |  |  |
| Cable inst. |  |  | 0 | 0 | 0.75 |  |  |
| Electronics inst. |  |  | 0 | 0 | 1.5 |  |  |
| PMT inst. |  |  | 0 | 0 | 0.75 |  |  |
| PV installation |  |  | 0 | 0 | 1.5 |  |  |
| Gas system |  |  | 0 | 0 | 0.75 |  |  |
| Cooling system |  |  | 0 | 0 | 0.75 |  |  |
| Signal splitter |  |  | 0 | 0 | 1.5 |  |  |
| Support inst. |  |  | 0 | 0 | 0.75 |  |  |
| WLS test/cut |  |  | 0 | 0 | 6 |  |  |
| WLS fiber inst. |  |  | 0 | 0 | 12 |  |  |
| Module tests |  |  | 3 | 0 | 3 |  |  |

## Other parts (production stage)

|  | Number(req) | No. of wk | FTE phy | FTE eng | FTE tech | Lab. | Mat. |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Support rails |  |  | 1 | 1 | 3 | 150 | 1,000 |
| Transport/sto |  |  | 0.75 | 1.5 | 5.25 | 248 | 300 |
| External PV | (1440) | 150 | 2.21 | 0.23 | 29 | 936 | 1,876 |
| Pre-inst.work |  | 150 | 1.6 | 1.6 | 3.2 | 192 | 300 |
| Installation |  | 150 | 1 | 1 | 1 | 115 | 0 |
| Management |  | 250 | 5 | 5+5(ds) | 0 | 550 | 0 |

- “External PV” includes $491k of readout electronics.

## Cost evolution

-                                                               $ in thousand
- 7/2001 estimate:                                         11,848
- 1/2003 estimate:                                         12,525
- 1/2004 estimate:                                         13,478
- 11/2004 estimate:                                       26,062
- The major difference comes from:
-    - Added Canadian labor cost/Pre-inst.    5,000
-    - External PV has been costed:                 3,024
-    - Included scintillator readout:                    500
-    - PMT’s have been included:                      500
-    - Full readout (85%  100%):               1,500
-    - Added rails/shipping cost:                    2,000
- 12/2004 estimate:                                        27,734
-    - Newer quote on G10                                  400
-    - More chamber const. FTEs                        800
- 1/2005 After cost-reduction exercise          24,219
-    - No pins, clear fiber, corrections             -3,500

## Schedule

## Spending profile

- Thousand dollars

- Year

- The graph assumes: flat construction spending starting at
- January, 2006.