CMS Project at UR

1
CMS Project at UR

• Pawel de Barbaro
• University of Rochester
• DoE Review
• July 15-16, 2002

2
Participants

• Task D Participants (CMS-HCAL)
• Faculty Prof. A. Bodek
• Research Faculty Dr. P. de Barbaro, Dr. H.
  Budd, Dr. W. Sakumoto
• Research Associate Dr. Y. Chung
• Task B Participants (CMS-HCAL)
• Faculty Prof. P. Slattery
• Research Faculty Dr. G. Ginther
• Task D Participants (CMS-TOB)
• Faculty Prof. P. Tipton
• Research Faculty Eva Halkiadakis, Andy Hocker
• Graduate Students Ricardo Eusebi

3
System Overview
System Overview


4
HCAL Engineering Design
HCAL - Engineering in WH6
5
Responsibilities

• CMS Projects at U. of Rochester
• HCAL
• Optical Readout System for Hadron Barrel (HB)
  Calorimeter
• AssemblyIntegration of Readout boxes for HB, HE
  and HO
• construction of Motion Table for H2 test beam at
  CERN
• Tracker
• construction of Silicon Strip Tracker (Tracker
  Outer Barrel, TOB), talk by P. Tipton

6
CMS HCAL Outline

• Absorber
• Optics
• Readout Box
• HPDs
• Other tasks
• Conclusions

7
Activity at CERN

• Scintillators installed into HB- wedges at bldg
  186
• All HB- wedges tested with radioactive source
  system, pronounced ready
• Wedges transported to SX5 for installation into
  cradle.
• HB wedges at 186, scintillator installated and
  tested.
• Assembly of HB into cradle in Sep 02.

8
HB- Wedges at Bldg 186
9
HB Absorber

• All HB- and HB wedges at CERN
• HB- assembled at SX5, HB wedges to be assembled
  in Sept 2002.
• HB- Wedge 16 (damaged during transport) has been
  rebuilt, tested

10
HB- Assembly at SX5
11
HB- Assembly at SX5
12
Assembled HB- Barrel in SX5
13
Lab 5 Factory

• HB Optics factory in final phase.
• Will be winding down in December. (Need to
  repair/replace megatiles for HB-16). Reduce
  staffing from 13 to 5.
• Continue to build optical cables for HB and
  fiber parts for optical decoder units.
• Factory will redirect to work on components for
  RBXs, HV, LV, electronics components.

14
Lab5 Optics factory (HB megatile production)
15
Other Optics tasks

• Improve performance of optical cables
• Task taken over from UIC.
• Problem tests at CERN this summer indicated that
  cables are very hard to install and
  connect/disconnect.
• Solution increasing slightly (1.5mils) hole
  size for alignment pins can improve
  connection/disconnection, without compromising
  RMS of light transmission

16
Optical cable layout
17
Placement of readout boxes
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HB RBX Assembly
Full RBX with 19 ch RMs
RBX Interior -- HV distributor and backplane
19
RBX Readout Module
The readout module (RM) integrates the HPD, front
end electronics, and digital optical drivers. PRR
passed March 1-2. HB Production begun
mechanics only. HE in design.
20
Optical decoder unit (ODU)
21
ODU part facing HPD
22
Hybrid Photo Detectors (HPDs)
23
RBX production status

• HB
• HB RBX shell parts completed, at Lab 5 ready for
  assembly
• HB ODUs finished, at Lab 5
• Backplanes finished, at FNAL
• Assembly work started at Lab 5
• HE
• Design almost complete
• Second mechanical prototype in construction at
  Ole Miss
• Subassemblies for ODUs ready. ODUs will be built
  at Notre Dame factory this summer (QuarkNet)
• HE RBX parts scheduled to be completed in
  September 02.
• HO
• Design starting this month.
• Will have a PRR at CERN during September CMS
  week.
• Plan to complete all RBXs by March 1 , 03

24
Near Term / 2002 Test Beam

• Will instrument HB wedges in November
• Test beam calibration of wedges of HB in summer
  of 2002
• Will use second generation QIEs running at
  40Mhz.
• CCAs
• GOL / VCSEL into HTR ?DCC Prototypes
• Assemble HB in September 2002

25
Conclusions

• Tasks Completed
• HCAL Barrel absorber ready
• Production and installation of Scintillator
  megatiles completed
• HB- barrel assembled and tested
• New tasks for Rochester
• Integration and testing of readout boxes at Lab 5
  at Fermilab (CMS Rochester Techs under Rochester
  upervision).
• Installation and Commissioning of US CMS detector
  at CERN (Pawel de Barbaro will become US CMS
  Coordinator at CERN in March 2003)

26
Front End Electronics

• QIE chips at FNAL (first submission).
• Chips are fully functioning. Front end noise
  being studied.
• CCA chips at FNAL. Problem with communication to
  chip. (Bug in layout solved by laser
  microsurgery). Seems fully functional!
• A chance that both CCA and QIE can skip a
  generation of submissions, have production parts
  by March 02.
• GOL (Gigabit Optical Link) Serializer prototype
  chip at FNAL. Being tested at 45 Mhz, works fine.
  (Normal operation 40 Mhz).
• VCSEL chosen, parts being ordered.
• Fiber optic cable plant being finalized.
  (Discussion this week at CERN).

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FE/DAQ Electronics
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FE Readout Card
VCSEL
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Six channel FE Proto

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HCAL Opto-Link
31
VCSEL/GOL Testing
Prototype GOL
Custom VCSEL Packaging