Some cryostat scintillatorslides for Monday’s meeting

Michigan State University

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 Scintillators

(cryostat (or crack) scintillators)

(gapscintillators)

Crack Scintillator (E3, E4)

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

Mounting 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

View of 2 cryostat shells

mounting bracket

Closeup

Bracket in final position

Bracket in final position

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

Special ITC brackets

Inner radius

Counters held together by pins in one module fitting into slots in neighbor module

Cryostat scintillator status as of 2004

Optics, PMT’s, electronics and even mechanical shells were available

Scintillator purchase was a victim of management contingency and the cryostat scintillators were on the upgrade path

In the last few months, thanks to Marzio and Howard Gordon, the money is now available for construction and installation

…but, construction has to be complete by the end of this FY

Completed counters will be sent to CERN at the end of 2005

when does installation make sense?

…and,to save money, we will use polystyrenescintillator provided by Dubna, rather thanthe PVT scintillator from Bicron;factor of 2 less light yield, i.e. more like 2-3 pe/mip calibration issues

Same WLS fibers as for gap scintillators

MBTS countersCompletion of cryostat counters made possible by tying this project in with MBTS counters

Scintillator

Dubna has already produced the scintillator for all of the MBTS counters awaiting some final decisions regarding clearances,

then scintillator will be shipped to CERN->MSU construction will also take place this summer, available

for shipping this fall (September) testing of prototype counter with ATLAS electronics

currently taking place at the University of ChicagoDubna is currently producing cryostat scintillator

to arrive at MSU by May 1 construction will take place this summer, available for

shipping this fall (September) testing with ATLAS electronics to take place on a similar

time-scale