T02 Overview of Endcap Calorimetry 402.04 Jeremiah Mans, L2 - - PowerPoint PPT Presentation

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T02 Overview of Endcap Calorimetry 402.04 Jeremiah Mans, L2 - - PowerPoint PPT Presentation

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T02 Overview of Endcap Calorimetry 402.04 Jeremiah Mans, L2 Manager, 402.04 November 29, 2017 J. Mans, 2017 November 29 Technical Review -- Endcap Calorimetry Overview 1 Outline Conceptual Design Scope Project organization

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SLIDE 1

T02 – Overview of Endcap Calorimetry 402.04

Jeremiah Mans, L2 Manager, 402.04 November 29, 2017

1

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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SLIDE 2

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Conceptual Design
  • Scope
  • Project organization
  • Summary

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Outline

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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SLIDE 3

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

Conceptual Design

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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SLIDE 4

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

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Overview of the Upgrade

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

Endcap Calorimetry

Current: PbW04 crystal ECAL+ plastjc-scintjllator/WLS HCAL Upgrade: Silicon-based ECAL, silicon and plastjc- scintjllator/SiPM HCAL

Endcap Calorimetry

Current: PbW04 crystal ECAL+ plastjc-scintjllator/WLS HCAL Upgrade: Silicon-based ECAL, silicon and plastjc- scintjllator/SiPM HCAL

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Selected physics drivers
  • Jet reconstruction at 200 pileup (particularly for vector-boson-

fusion and vector-boson-scattering studies)

  • Electron and photon reconstruction and id for Higgs (H→

, ɣɣ H→ZZ→eell) at 200 pileup

  • Muon identification in region 2.4 < |η| < 3.0
  • Missing transverse energy resolution at high pileup, for dark-

matter searches/studies

  • Technical drivers
  • Very high radiation dose: current CMS endcap calorimeters lose

> 90% of signal amplitude over large portions of detector if kept for HL-LHC era

  • Increased L1 readout rate (100 kHz increases up to 750 kHz)

and longer L1 trigger latency (3 μs increases to 12.5 μs)

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Drivers for Endcap Upgrade

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Radiation damage will greatly reduce the

energy resolution of the endcap calorimeters after 500 fb-1

  • Segmentation and performance is

marginal for management of HL-LHC pileup conditions

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Motivation for the Upgrade

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Calibration: Detector response will

change due to ongoing radiation damage

  • Require 3% cell-to-cell intercalibration to

retain performance for EM

  • Use MIP calibration to track changes to

cells → sets requirements for end-of-life MIP S/N

  • Operate detector at low temperature to

minimize noise

  • Resolution and Robustness
  • Longitudinal segmentation arranged to limit

number of layers required while maintaining ability to make good measurements near the front of the shower where f(π0) is large and for tracking showers in the dense region, even if a layer is lost

  • Maintain high density to limit shower spreading,

total thickness (>10λ) for both measurement resolution and shielding of the muon system

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Requirements Flowdown

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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SLIDE 8

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

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Conceptual design

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Silicon/(tungsten+lead)

electromagnetic calorimeter (CE-E)

  • 28 layers with total 26X0 thickness
  • Stainless-steel absorber for

hadron calorimeter (CE-H)

  • 8 layers with silicon-only readout

and Δλ=0.25 longitudinal segmentation

  • 4 layers with mixed silicon and

scintillator readout and Δλ=0.25

  • 12 layers with mixed

silicon/scintillator and Δλ=0.45

  • Full detector operated at
  • 30°C using CO2 cooling
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Detector system constructed out of cassettes

consisting of a copper cooling plate (CO2) with a mixture of silicon modules and scintillator tileboards mounted on it

  • Each cassette covers 30° of a single layer
  • Modules/tileboards connect to motherboards which host a

concentrator ASIC

  • Modules and tileboards are constructed and

tested as units and shipped to the cassette assembly site

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Building blocks of the detector

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Calorimeter sensor design is driven by

balance of cost, radiation-damage and keeping pad capacitance low-enough to control noise

  • Primary calibration/monitoring technique is

based on MIP tracks in the detector

  • Three regions in detector with different active

thickness (300, 200, 120 um) with 120 um sensors having smaller pad sizes

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Calorimeter Silicon Sensors

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

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Calorimeter Silicon Sensors

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Cell layout optimized for efficient

channel-use while constructing 2x2 trigger cells (3x3 in 120um modules)

  • Special calibration cells also included, with

small area

  • Excellent results achieved with 6”

HPK sensors and “stepper” 8” sensors

  • Hamamatsu procuring necessary equipment

for alignment of 8” sensors

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Stack of baseplate/kapton/sensor/PCB
  • PCB hosts HGROC ASIC, has holes to allow downbonds from PCB to the

sensor

  • Automated assembly process developed using gantries for high precision

and large-volume

  • Work has been done with 6” sensors/PCBs so far, will shift to 8” in 2018

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Silicon Calorimeter Modules

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

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Tileboards, Scintillator, and SiPMs

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • SiPM directly observes the scintillation

light from the tile, allowing for tile-by-tile corrections for radiation damage

  • Scintillator construction concepts include

both individually-wrapped tiles and “macrotiles” combining an array of tiles into a single mechanical unit

  • Tileboard hosts SiPMs and HGROC

ASICs

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Design makes heavy use of

standard HL-LHC ASICs and components

–

LpGBT data link

–

VTRX+ optical interface

–

GBTSCA slow-control ASIC

  • Two custom ASICs required

–

ADC: HGCROC

–

Concentrator: combines the output from multiple HGCROC chips into individual trigger or DAQ fibers

  • Allows for significant savings on
  • ptical fibers and off-detector

electronics at the cost of additional

  • n-detector engineering

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Electronics Architecture

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Cassette integration requires

mounting modules and tileboard onto the cooling plate, adding motherboards, and dressing the overall cassette with cables and fibers

–

Geometric variation from layer-to-layer due to inner and outer boundary variations, but many common components in use on all layers

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Integrated Cassettes

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

US Scope

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Technical Review -- Endcap Calorimetry Overview

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Since the original construction of CMS, the US has

had a leading role in hadron calorimetry and in automated assembly of silicon detectors

  • Construction of the barrel hadron calorimeter, electronics for all

hadron calorimeter sections (including Phase 1 Upgrade)

  • Construction of a large fraction of the tracker outer barrel,

construction of the full forward pixel Phase 1 Upgrade)

  • For the HL-LHC upgrades, the US contributions to

the endcap calorimeter center on the production of the hadronic calorimeter silicon and scintillator modules and cassettes and aspects of the electronics and services where the US can provide particular leadership

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Organizing Principle: Hadron Calorimetry and Electronics

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Module Construction
  • US develops detector-wide standard procedures for silicon module construction,

constructs all hadronic silicon modules and all odd-size/edge modules for the electromagnetic section

  • Scintillator tilemodules
  • US constructs active material and readout PCBs, procures and mounts SiPM

photodetectors, and tests tile modules for the front seven layers of the mixed portion of the hadron calorimeter (28% by area)

  • Electronics
  • US responsible for the development and production of the concentrator ASIC,

development and production of motherboards for silicon and scintillator hadronic sections

  • US contributes to trigger primitive construction firmware, as well as specification and

procurement of LV/HV power supplies

  • Cassette Assembly
  • US develops cassette cooling plate design and assembly procedure, constructs

front 15 layers of hadronic calorimeter (360 cassettes)

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US Construction Scope Outline

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

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Visual Representation of Scope

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

Full responsibility

  • Construction of Si modules
  • Construction of tileboards

including scintillator

  • Design and construction of

motherboards for Si and Sc

  • Construction and assembly
  • f cassettes

Partial responsibility

  • Design and

construction of motherboards Partial responsibility

  • Construction of Si

modules

  • Design and

construction of motherboards Partial responsibility

  • Assembly of odd-

sized Si modules Cross-cutting electronics

  • Full: Design and construction/test of concentrator ASIC
  • Partial: Trigger firmware development
  • Partial: LV/HV supply specification procurement
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Technical Review -- Endcap Calorimetry Overview

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Project Organization

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Technical Review -- Endcap Calorimetry Overview

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402.4 Organization Chart to L3

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

402.4 Endcap Calorimetry Jeremiah Mans (UMN) Deputy: Harry Cheung (FNAL) 402.4 Endcap Calorimetry Jeremiah Mans (UMN) Deputy: Harry Cheung (FNAL) 402.4.3 Silicon Sensors Nural Akchurin (TTU) Manfred Paulini (CMU) 402.4.3 Silicon Sensors Nural Akchurin (TTU) Manfred Paulini (CMU) 402.4.4 Silicon Modules Nural Ackchurin (TTU) Manfred Paulini (CMU) 402.4.4 Silicon Modules Nural Ackchurin (TTU) Manfred Paulini (CMU) 402.4.5 Cassetues Jim Strait (FNAL) Deputy: Zoltan Geise (FNAL) 402.4.5 Cassetues Jim Strait (FNAL) Deputy: Zoltan Geise (FNAL) 402.4.6 Scintjllator Ted Kolberg (FSU) 402.4.6 Scintjllator Ted Kolberg (FSU) 402.4.7 Electronics and Services Jim Hirschauer (FNAL) 402.4.7 Electronics and Services Jim Hirschauer (FNAL)

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Management team has strong project management

experience, expertise in calorimetry, and detector construction

  • Module production process organized at international level by J.

Incandela – extensive experience with tracker module production for CMS and CDF

  • US deep experience on scintillator-based calorimetry and SiPMs

from CDF, CMS, CALICE (FNAL, Maryland, Iowa, NIU, Notre Dame, Rochester)

  • Institutions involved (1 Lab, 19 Universities)
  • Fermilab, University of Alabama, Baylor University, Brown University, University of

California – Davis, University of California – Santa Barbara, Carnegie Mellon University, Fairfield University, Florida State University, Florida Institute of Technology, Kansas State University, University of Iowa, University of Maryland, Massachusetts Institute of Technology, University of Minnesota, University of Notre Dame, Northwestern University, Northern Illinois University, University of Rochester, Texas Tech University

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Management and Project Team

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • The endcap calorimetry is an international project,

coordinated with several collaborating groups from different nations

  • The US management coordinates effectively and closely with the

international project on a weekly basis

  • The US has technical leadership in the development
  • f the module assembly process, scintillator tile

production, SiPMs, motherboards, and the cassettes

  • The overall construction plan is organized for cost

and quality optimization.

  • International partners will lead the design of the front-end ASIC,

provide absorber materials, pay for a portion of the silicon order, and provide other parts of the final detector

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International Context and Coordination

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

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International Project Organization [Snapshot]

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • There are a range of critical interfaces to be considered in the project

– Mechanical: absorber gap thickness, mount points for cassettes onto

absorber, cooling manifold locations

– Electrical/optical: connector types and locations for cable flow volumes – Logical: data formats between HGROC and concentrator, between

concentrator and off-detector electronics

  • Overall integration issues are the responsibility of the international EC

technical coordination team

– Documentation and reviews of key specifications and interfaces – Engineering designs will be fully documented in CERN EDMS in

advance of the Engineering Design Reviews or Electronics System Reviews which will proceed construction of each major subsystem

  • Sign-off will be required from the project technical coordinator as

well as the area coordinators of the affected sections of the detector

– Reviews will include the US-CMS project engineers and managers

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Interface Control in the EC Project

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • The cost drivers for 402.04 are:
  • Silicon sensors – these costs are well-established by a conservative

budgetary vendor quote and information from a second vendor

  • Modules – labor and equipment costs are cost drivers in this area and are

solidly based on experience from CDF and CMS trackers

  • Concentrator ASIC : significant design effort (~5 FTE-years of ASIC

engineering), significant cost for masks (65nm technology)

  • Risks
  • Risk register for full project at the Project Fermipoint Site
  • L3 managers will present risks for their specific areas of the project
  • Examples of risks considered to date: damage to a module assembly facility
  • r key piece of equipment, delays or need for additional resources in ASIC

development, commercial/vendor risk for silicon procurement

  • Scope contingency
  • The project design allows for scope contingency in several ways, including

the descoping of a layer of the calorimeter at some cost to performance

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Basis of Estimate and Risk

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

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Base Cost

Cost = AY $M (No Contingency)

L3 Area M&S Labor Total OPC 402.04.02 Management 0.2 0.3 0.5 0.9 402.04.03 Sensors 11.6 0.1 12.3 0.6 402.04.04 Modules 2.8 4.2 2.5 402.04.05 Cassettes 2.6 2.7 4.5 3.4 402.04.06 Scintillator Calorimeter 2.0 0.8 3.4 1.0 402.04.07 Electronics & Services 2.9 0.8 7.7 1.4 22.3 8.9 31.2 9.8

  • J. Mans, 2017 November 29

Technical Review -- Endcap Calorimetry Overview

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ES&H Quality Assurance Quality Control

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Technical Review -- Endcap Calorimetry Overview

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • The current construction plan involves no materials
  • f identified environmental risks
  • Cooling plant is based on CO2 rather than freon
  • Detector will use high voltage (800 V) and will be
  • perated in a refrigerated mode (-30°C). Standard
  • perational procedures will be developed and

documented to allow safe operation

  • R&D and some production testing will involve the

use of gamma, neutron, and proton radiation. These tests will be performed at commonly-used radiation facilities and will follow the standard operational procedures defined at each facility

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Environmental protection, health, and safety

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • Quality Assurance : Prevention of Issues
  • General effort across the project to identify potential problems and minimize

the impact to cost or schedule

  • Key tools:
  • A series of prototypes which will allow the integration of quality
  • Checkpoints/reviews in early production for all sections to identify issues
  • Fixed procedures for construction, automation
  • Testing procedures: testbeams, integration testbeds, radiation testing

including operation of systems under irradiation as well as static dosing, thermal cycling tests

  • Quality control : Identification of issues
  • General principle: combine only known-good sub-assemblies when

constructing more complex objects

  • Use databases (such as web-based tools from Phase 1) to track all

components through the assembly and testing processes

  • More details in the individual talks

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Quality Assurance and Quality Control

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • The overall project final-stage R&D and engineering is organized

around a series of three major tests: the thermal mockup, major system prototype 1 and major system prototype 2

  • Thermal and Mechanical Mockup (2017/2018)

– Construction of full-scale cassettes with cooling plates to

understand mechanical, thermal, and assembly issues

  • Prototype 1 (2018/2019)

– Construction of significant quantities of 8” modules (>100)

and O(9) tileboards using HGROC-DV1, assembly and

  • peration of full-scale cassettes, FPGA-as-concentrator
  • Prototype 2 (2019/2020)

– Construction of significant quantities of 8” modules (>100)

and O(9) tileboards using HGROC-DV2, assembly and

  • peration of full-scale cassettes, ASIC-based concentrator

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Mockup and Prototype Sequence

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • The current maturity of design is overall at the

“conceptual” level

  • Some areas are rapidly approaching the preliminary design level,

including the design of the sensor and the cassette cooling plate

  • After prototype 1, most design aspects will be

preliminary and some will be final

  • For cassettes, a selected subset of layers are expected to be final,

with the other layers still preliminary as the design specifications from the layers constructed during the prototype will still need to be transferred

  • Prototype 2 will bring all design aspects to a final state
  • Some additional work may be required on the concentrator ASIC

near the end of the process, given the required development timeline

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Maturity of Design

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
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Selected Key Milestones

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29

Milestone Date Thermal mockup cassette constructed for all-silicon case 11/2017 Thermal mockup cassette constructed for mixed-cassette case 5/2018 HGCROC-DV1 delivered 10/2018 Market survey for silicon sensors complete, vendors selected 4/2019 Major system prototype 1 (HGCROC-DV1) validated 6/2019 HGCROC-DV2 delivered 9/2019 Concentrator-V2 delivered 2/2020 Engineering design review for major mechanical structures 3/2020 Major system prototype 2 (HGCROC-DV2) validated 4/2020 Tileboard validated with HGCROC-DV2 6/2020 Procurement readiness review for silicon sensors 1/2021 Engineering design review for modules, cassettes, and tileboards 6/2021 First 5% of sensors delivered, production continuation review 6/2021 First 5% of modules completed, production continuation review 10/2021 First 5% of tileboards completed, production continuation review 9/2021 First 5% of cassettes completed, production continuation review 1/2022 Cassette production complete 9/2023

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Summary

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Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29
  • The endcap calorimetry upgrade is crucial to the HL-LHC

physics program for both electromagnetic and hadronic

  • bjects
  • The detector design is advanced and has been

documented in an international technical design report currently under review by the CMS collaboration

  • The US involvement has been agreed with international

CMS and the required R&D has been identified to prepare the detector for construction

  • The project team has been working actively to identify and

document risks, to define interfaces, and to structure the project appropriately in the P6 system for eventual efficient project management in the construction phase

37

Summary

Technical Review -- Endcap Calorimetry Overview

  • J. Mans, 2017 November 29