# Presentation: 157393

## Agenda for LC Muon Detector Studies Mtg    	Black Hole Tues. Aug. 5  12:30 – 14:00

- Parts for the prototype planes.  15 min.	Gene Fisk
- MAPMT FE electronics/cal.     15 min.	Paul Karchin
-                                                           10 min.	Mani Tripathi
- Readout Options:
-        MINOS   			          15 min.	Adam Para
-        UC Davis Studies 	          15 min.	Mani Tripathi
- Muon ID in b-b_bar events        15 min.	Caroline Milstene

## Prototype Module Layout

- 2.5m

- 5.0 m

**43 full strips**

- 3.6m (L) x  4.1cm (W) x 1cm (T)

**43 short strips**

- 3.6m => 0m long

- Read out: both ends of full strips; one end of short strips (except the shortest 22).
- 2*(43 + 21) fibers/side =128 channels = 8 (1.2mm dia) fibers/pix * 16(4 x 4mm2) pixels           => Equivalent of One MAPMT/prototype plane

## How many prototype planes & strips?

- Each plane is the equivalent of 86 strips that are 3.6 m long.  Each strip has a mass of 1.52 kg or 3.3 lbs.
- The weight of a plane (86 strips) is 131 kg or 288 lbs.  Order 15% extra scintillator – 100 strips per plane or 330 lbs (152kg).
- 3 u & 3 v to over-constrain a straight line = 6 planes + one spare to use for resolving multi-hit ambiguities + one to learn the construction technique.  => 8 planes.
- Total scintillator is 2,341 lbs (1.17T) or 700 strips or 1.064 Tonnes.
- Scintillator Cost  -  MINOS paid ~ $10/kg or $10K/tonne.  Assume a 50% add’l cost for a small order:
-                                                **$16K**

## Fiber quantities and costs

- WLS Fiber
- 	Buy enough to instrument every strip: 100 strips*3.6m/strip = 360 m  times 8 planes (one to learn on).
- 	=> 2.88km
- 	Kuraray quote of $3.29m => $9,475 plus shipping & duty
-      so add $1,500, which brings the total to: $11K  WLS
- Clear Fiber
- 	From engineering drawing:
- 	Short near strips:  21*4.6 m =  97m
- 	Full strips:  43*(4.6m +2.3m) = 297m
- 	Short far strips:    21*4.3m  =  90m
-                                  Total           484m => 550m times 8 planes
-                                                                              4,400 m
-      Clear cost = 4.4km*$3.11K/km = $13.7K +$1.5K = $15.2K Clear

## Other fiber and layout costs  (Mitch Wayne- Notre Dame)

- Polishing and splicing:
-         Material costs – teflon tubes                 $3.0K
- 	    Ice polishing + splicing: 32 hrs*$48/hr  $1.5K
- Plastic sheets for fiber routes:
- 	 $10/sqft: acrylic or $6/sqft: Lexan
- 	 ($6-$10/sqft)*110sqft/sheet*8 sheets $5.3-9.0K
- Machining of plastic sheets:
-        20 hrs of programming*$40/hr = $0.8K
-        60 hrs Gerber routing*$40/hr  = $2.4K
-               Total machining of plastic sheets     $3.2K

## Multi-anode Photomultipliers

- 16 channel
- multi-anode PM

- 30mm

- Hamamatsu H6568

- 16 anode PM’s come in two varieties: w/ or w/o base.
- H8711-10  with base         $1290.85 ea. for 6 or more.
- R7600-00-M16 w/o base  $1011.37 ea. for 6 or more.
- We will need at least 14 MAPMTs for R&D:
- 	8 for the 7 planes;
- 	2 to replace two loaner tubes (spares);
- 	4 for bench tests of electronics;
- 	Procure 7 w/bases; 7 w/o bases.
- Cost:      $9,036 + $7,080 = $16,116

## Incomplete R&D Cost Estimate