1. 9/20/2018
CHIPP Meeting 10 September Slides for use by Sven for ATLAS talk DPNC Geneva
10 September 2008

2. DPNC Activities Construction and Commissioning Preparing for Physics
9/20/2018
DPNC Activities
Construction and Commissioning
Inner Detector: SCT and Pixels
Liquid Argon: Read-out electronics (RODs)
High Level Trigger:
Preparing for Physics
Computing Activities and Infrastructure:
Performance Studies
Preparing for the First Data:
Upgrade Activities
B-layer and PIXEL system evolution in ATLAS.
Inner Detector Upgrade for SLHC
Participants
A. Clark, A. Blondel, M. Pohl, L. Rosselet, X. Wu
D. Ferrere, S. Gadomski
W. Bell, S. Gonzalez, A. Hamilton, J. Navarro Garcia, G. Pasztor, (A. Straessner), Ph. Urquijo, (T. Vu Anh)
A. Robichaud-Veronneau, M. Backes, E. Berglund, T. Eifert, C. Mora Herrera, F. Bucci, G. Alexandre, A. Abdelalim, (R. Thananuwong)
+ participation of mechanics and electronics groups.
10 September 2008 2

3. The ATLAS Detector Online and Offline Software Physics and Computing
Weight: 7000 tons
Dimensions: 46 x 22 x 22 m3
Magnetic Field: 2.6 T (solenoid) and 4.1 T (toroid)
Tracker Support Structure
Geneva
Semiconductor Tracker Geneva
TDAQ - Trigger and Dataflow
Bern and Geneva
Readout Electronics for Calorimeter
Geneva
Online and Offline Software
Physics and Computing
Bern and Geneva
Bern and Geneva
Superconductor and Casings for Barrel Toroid Coil
Bern and Geneva

4. The Semi Conductor Tracker
Construction
Complete – FE chip design and prototype, barrel mechanics, module design, prototype and construction
Installation
Complete –
Commissioning ( )
Commissioning of barrel and each end cap before installation successful (including cosmics)
A barrel sector was recently commissioned on surface for development studies
Commissioning in detector delayed by ~18 months (pixel and SCT) because of cooling infrastructure problems
full SCT powered with cooling successfully
So far module calibrations ~unchanged from surface and stable
Commissioning in full swing and expect full operation in 2008 run period
Major cooling infrastructure developments foreseen in future shutdowns
Following slides:
Module, final integration at surface, installation, 2 figures showing operation dur ing commissioning
10 September 2008 4

5. The Semi Conductor Tracker
10 September 2008 5

6. The Semi Conductor Tracker
10 September 2008 6

7. The Pixel Detector Intregration Installation Commissioning (31.08.08)
Complete – DPNC role was technical
Installation
Complete early 2008
Commissioning ( )
Bake-out of beam pipe completed
Commissioning delayed by cooling infrastructure problems
No show stoppers yet and full operation in 2008 run period
(B-layer – see slides on the upgrade)
10 September 2008 7

8. The LAr calorimeter ROD readout
Design, construction
Complete – 228 ROD boards + spares for Lar EM calorimeter and hadron calorimeter
Installation complete, associated DCS developments complete
Commissioning complete
Now maintenance
10 September 2008 8

9. High Level Trigger Activities
Design, construction
Complete – 228 ROD boards + spares for Lar EM calorimeter and hadron calorimeter
Installation complete, associated DCS developments complete
Commissioning complete
Now maintenance
10 September 2008 9

10. Preparation of Computing Infrastructure (S. Gadomski)
9/20/2018
Preparation of Computing Infrastructure (S. Gadomski)
Tier 3 hardware – complementary to Tier 2 activities in CSCS Manno
Operating well, heavily used
75 TB effective disk, 15 login machines, 38 batch nodes (152 CPU’s)
Reliable installation for local and for Grid use.
Direct 1Gb/sec link to CERN IT.
10 September 2008 10

11. Preparation of Computing Infrastructure
Operations – expect use of Geneva Tier3 for commissioning and Data Quality work on the ATLAS Trigger
access to latest software via AFS (in place)
access to latest data as at CERN (in progress)
if this use goes ahead, will be effectively extension of the CERN Analysis Facility
no contradiction with the Tier 3 role, which will continue
planned flow of data:
for commissioning: small subsets of latest data from CERN
for analysis: data derived from large statistics samples, from the Grid
10 September 2008 11

12. Preparations for First Data
Commissioning – see previous slides
HLT Trigger Operations – see previous slides
Computing operations – see previous slides
S. Gadomski is ATLAS Trigger production manager
- responsible for data samples produced on the Grid for Trigger studies
- responsible for the Trigger activities at the CERN Analysis Facility
Performance Studies
Trigger and tracking related initially to electron/photon identification
(W. Bell) implementing hardware and software for minimum bias events
Emphasis on understanding the tracking and low-pT electron signatures with the 1st data
e.g. J/Y triggers
Physics Studies
Recent note on SP measurement for Higgs (A. Straessner)
Recent notes on systematic SUSY searches with 1-lepton signature (T. Eifert, M. Backes)
Studies of SUSY potential with dilepton signatures, Stop (A. Robichaud Veronneaui, C. Mora, Ph. Urquijo))
Studies of SM and large emphasis on SM backgrounds (A. Hamilton et al., ALL)
10 September 2008
Everybody is BUSY!! 12

13. Plans for coming year
Operations – contribute to high performance of operating ATLAS detector
– investment merits good operation
Understanding of the first data with initial emphasis on electron / photon performance and track quality
Initial physics aims
Participation in understanding of minimum bias events
Ditto for basic SM processes (W/Z production, W/Z + jets)
Make basic measurements of SM processes relevant to group’s SUSY and Higgs studies
As such, participation as members of ATLAS in the following physics and performance groups
Electron/photon performance
Standard Model, SUSY and Higgs Working Groups
R&D and planning towards SLHC – the silicon strip tracker and pixel detector
– the B-layer replacement of 2013
– see following slides
10 September 2008 13

14. A luminosity profile and expected machine upgrades
9/20/2018
A luminosity profile and expected machine upgrades
2009 – 2012 ramp in L, up to
Shows 3 years exploitation of LHC at nominal or above luminosity
2012 – 2013 shutdown - expect new triplets & first injector upgrade
This may be up to ~6 months
Potentially a nominal 2-3 increase in luminosity achievable before a long shutdown in (up to 2-3 x 1034 cm-2s-1)
A nominal integrated luminosity of fb-1 before the shutdown.
End 2016 – end 2017 shutdown - expect commissioning of new full injector chain
Experiments require a long shutdown (> 12 months) to replace their full Inner Detectors
Expect an increase to ~ 1035 cm-2s-1peak luminosity and 3000 fb-1 integrated luminosity
This implies replacement of B-layer in and full ID replacement on
The full SLHC upgrade will be a fully silicon tracker with pixels and silicon strips
The existing B-layer cannot be removed and replaced in an 8-month shutdown
Expect insertion of a new B-layer between pixel envelope and a smaller radius beam pipe
10 September 2008 14

15. A luminosity profile and expected machine upgrades
9/20/2018
A luminosity profile and expected machine upgrades
10 September 2008 15

16. Expected Inner Detector Layout
9/20/2018
Expected Inner Detector Layout
Including disks this leads to:
Pixels: 5 m2, ~300,000,000 channels
Short strips: 60 m2, ~30,000,000 channels
Long strips: 100 m2, ~15,000,000 channels
10 September 2008 16

17. ATLAS ID SLHC Upgrade – actual DPNC participation
9/20/2018
ATLAS ID SLHC Upgrade – actual DPNC participation
Stave/Module:
- Design optimization
- Fabrication of a super-module demonstrator with end-insertion system
Mechanics:
- End of barrel services layout and implementation
- Barrel structures: Stave/SM handling and mechanical FEA
Thermal:
Super-module and Stave thermal performance
Thermal grease radiation hardness and properties
Electronics:
ABCn: 250nm design, simulation and implementation of the digital architecture. Chip submitted in July and deliver
Future ABCn: 130 ou 90nm. Architecture digital en cours
DAQ: Under investigation for chip evaluation and for hybrid and module tests
DCS: Architecture and specifications under investigation to be part of the global readout architecture
Pixel B-layer replacement: Task force has written recommendations – future activity being understood
10 September 2008 17

18. Module Integration – Stave and Super-Module
Powering and readout are grouped for several modules and a pre-integration is considered on a ~1.2 m long stave (or Super-Module).
Bus cable
Hybrids
Coolant tube structure
Carbon honeycomb or foam
Carbon fiber
facing
Readout IC’s
Silicon sensors
Stave
Super-Module
Service bus
TTC, Data & DCS fibers
PS cable
DCS, Interlock
Cooling In
Opto
SMC
DCS
interlock
SMC Hybrid
Module #1
Module #2
Module #12
Cooling Out
HV cable

19. Preliminary Study of a B-layer insertion
Minimum radius of a new beam pipe
Existing detector stays in place
By end 2009 beam pipe radius for must be clarified – emphasis for performance
Insertion procedure requires full engineering study but looks feasible (N. Hartman)
Number Staves
Tiled in Z?
Total Loss (Angle)
Total Loss (%) 13 Y
65.5
18% 14
42.6
12% 15
20.3 6% 16
0.0 0% N
12.4 3%
Assumptions
Linear overlap (no complexities from tiling)
Module active width 16.4mm, substrate width 18mm
Module active length 60mm, substrate length 62.4mm
Example: 16 stave b-layer – not shingled in z
10 September 2008 19