USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

1

D4D5 D6

B11 B12 B13 B14

A12 A13 A14 A15 A16

B15

E1,2

E3,4

E3 C10 B11 E1 D5 A14 - A15 B14 D6 A16 - -

D4 A12 A13 B12 - B13 - - - - B15 -

1.0 1.1

1.2

1.4

1.6

ITC Scintillator Project

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

2Responsibilities

• MSU– Produce ITC fiber assemblies for EB

instrumentation - 99% completed

– Design, construct and test prototypes of crack (E3, E4) scintillators - completed

– Purchase scintillator (E1:E4)

– Purchase & Prepare WLS fibers (E1:E4)

– Assemble, test & install crack scintillators - purchase and assembly of mechanical components pending submission approval of drawings

• UTA– Design, construct and test prototype of gap

(E1, E2, C10) scintillators - in progress

– Assemble, test & install gap scintillators

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

3Gap Scintillator Design

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

4Crack Scintillator Design

ATLAS IC Scintillator

R. Miller

Dimensions are in mm with a tolerance of ± 0.1 unless stated otherwise. Dimensions in parentheses are in Inches

DRAWNDATEPROJECTMATERIALTITLEDWG. NOSCALE

NOTES:

1.

MICHIGAN STATE UNIVERSITY HIGH ENERGY PHYSICS

REV

ASSEMBLY

A

HEP-B-025-368

227

140

885

Mounting bracket

Outer End piece Optical connectorsockets (2) pinned and sealed into end piece

Bottom cover panel is epoxied to end pieces.Black felt light seals line the surfaces in contact with fibers or scintillator edges.Top cover panel overlaps the bottom cover and end pieces and is taped at the edges.

Compression plate with set screws in same holes as mounting screws

6 mm thickPVT Scintillator, wrapped in Tyvek

OpticalIsolators on edges as necessary

(6) WLS Fibersfor cell E3

Inner End piece

Cell E3478

Cell E4362

19 8-14-01

1:5

C(1/8 x 3/4) pin

E4E3

(6) WLS Fibersfor cell E4

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

5Optical Paths

ATLAS ITC Scintillator

R. Miller

MICHIGAN STATE UNIVERSITY HIGH ENERGY PHYSICS

REVDRAWNDATEPROJECTMATERIALTITLEDWG. NOSCALE

HEP-B-025-

R-PHI VIEW

R-Z VIEW

10-8-01 E

1:5

TileCal EB Plug

R=2288 (Inner radiusof Tilecal)

CrackScintillators

7

Cell E1313

Cell E2341

Z = 3540 (Face of LAr Cryostat)

8

290

227

FIBER ROUTING

Optical fibersin 1.5 mm dia.tubing(8/connector)

GapScintillators

376

Z = 3560 (Surface of Tilecal EB Endplate)

Clear fibers (in profiles) to PMT's

DR = 691

15

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

6Envelope

R=2979

Envelope for Scintillators at Z = 3532 for R < 2891

ITC Plug Section IZ = 3444(source tubes)

R=2891

45˚

Proposed envelope for fibers from ITC scintillators

ITC Fiber Guide Plate

Z = 3560

Z = 3464

Fiber bundles to scintillators

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

7Mounting Proposal

ATLAS ITC Scintillator

R. Miller

MICHIGAN STATE UNIVERSITY HIGH ENERGY PHYSICS

REVDRAWNDATEPROJECTMATERIALTITLEDWG. NOSCALE

HEP-B-025-

227

DR = 885

140

Z=3560

Z=3540

R=1453

GAPSCINTILATOR

INTER-CRYOSTAT SCINTILLATOR MOUNTING

137.

117.

R-PHI VIEW R-Z VIEW

Pin aligns inner end to slot in next ctr.

9-21-01 E

MOUNTING

1:5

Dimensions assume 2 mm between Ctrs.

Cell E4362

Cell E3478

371

E4E3

8*

15*

25

13

20

R=2313

MOUNTING DETAIL

50

10

(2) M4 x 15Socket Hd. CS attaches crack ctr. to bracket

(2 ) M8 x 30Flat Hd. CS Ctrsunk attaches bracket and gap ctr. to EB end plate

Shim as neededto clear LAr Cryost.

eta=1.20

Bracket

R=2288

R=2260

CRACKSCINTILLATOR

* Indicates Envelope DimensionNOTES:

Bar is Integral to crack ctr.

Bar is Integral to gap ctr.

LAR CRYOSTAT

TILECAL EB

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

8Special Mounting

60

61

62

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

9Issues & Status

• Funding/production status– Funding (USATLAS) OK’d for gap

scintillators

– Funding OK’d for crack scintillator mechanical components - Production delayed pending TC approval of drawings

• Special Modules– Fiber assemblies for modules with special

ITC submodules is almost completed (except for 1 special module type)

– Prototype mounting brackets have been made for modules with modified inner R - attached after EB assembly - allows us to use standard scintillators on all modules - one didn’t fit

• Light Covers– Plastic film to cover fiber cables, connectors

- detailed design in progress

USTileCal Planning Meeting @ UTAITC Scintillator Project

R. MillerMay 13, 2002

10

• Further testing– More Test Beam signal levels ?

– Cs Scans - signal levels ?

– Radiation hardness tests ?

– Check mounting & light covers on EB pre-assembly

Issues & Status (cont.)