1. Starting up the CLIC detector design study CLIC Workshop, 15. Okt 2008
Christian Grefe, Peter Speckmayer
15 Okt. 2008
CLIC Workshop 2008

2. Outline CLIC000 Configuration Tracking Single muons Z'(750GeV) to μμ
Calorimetry
Leakage studies
15 Okt. 2008
CLIC Workshop 2008

3. CLIC 000 Cut through CLIC 000 (drawn by JAS3) Myon system Solenoid
HCAL
ECAL
Tracker
Vertex detector
625cm
675cm
15 Okt. 2008
CLIC Workshop 2008

4. CLIC 000 Based on the SiD01 detector
Created as a starting point to have a detector to “play”
Created by Marcel Stanitzki (RAL)
Only 2 modifications for now compared to SiD01:
Beampipe from 1.4cm radius to 4cm (Beamstrahlung)
Much bigger HCAL (increased λ to ~ 9)
All other systems moved accordingly
15 Okt. 2008
CLIC Workshop 2008

5. CLIC 000 Tracking Vertex detector: barrel: 0.1mm Si - 5 layers
Inner radius: 4.0cm SiD01), outer radius 8.6cm SiD01)
Vertex detector: endcap: 0.1mm Si – 4 layers
Inner z: 7.1cm, outer z: 17.0cm
Tracker barrel: 0.3mm Si - 5layers
Inner radius: 21.8cm , outer radius: 121.8cm
Tracker endcap: 0.3mm Si – 4 layers
Inner z: 85.5cm, outer z: cm
Forward Tracker: 0.3mm Si – 3 layers (r = 16.6cm)
Inner z: 20.4cm, outer z: 83.3 cm
15 Okt. 2008
CLIC Workshop 2008

6. CLIC 000 Calorimetry ECAL: 30 layers SiW, 0.35cm*0.35cm cells
20 layers of 0.25cm W + 10 layers of 0.5cm W, each followed by a 0.3mm Si layer. One additional Si layer in front of the ECAL.
Barrel: inner radius 127.0cm, outer radius 141.0cm
Endcap: inner z 168.0cm, outer z 182.0cm
HCAL: 45 layers Wscint, 1.0cm*1.0cm cells
2.0cm W followed by 0.5cm Polysterene for each layer
Barrel: inner radius 141.0cm, outer radius 264.8cm
Endcap: inner z 182.0cm, outer z 305.7cm
Total of ~ 9 λ
Changed from 34 layers of Steel-Gas SiD01 (λ ~ 4.6)
15 Okt. 2008
CLIC Workshop 2008

7. CLIC 000 Solenoid Muon system FWD ECAL Instrumented luminosity monitor
5T coil , inner radius: 280.0cm (from SiD01)
Muon system
48 layers of steel/gas, 3.0cm*3.0cm cells
Barrel: inner radius 363.0cm SiD01), outer radius cm
Endcap: inner z cm SiD01), outer z 625.3cm
FWD ECAL
2 layers SiW, inner radius 8.7cm, outer radius 25.0cm, z = 168.0cm
Instrumented luminosity monitor
1 layer SiW, inner radius 4.0cm, outer radius 14.3cm, z = 295.0cm
15 Okt. 2008
CLIC Workshop 2008

8. CLIC 000, some event displays
Z 3Tev
15 Okt. 2008
CLIC Workshop 2008

9. CLIC 000, some event displays
Z →qq 3TeV
15 Okt. 2008
CLIC Workshop 2008

10. CLIC 000, some event displays
WW 3TeV
15 Okt. 2008
CLIC Workshop 2008

11. Tracking Tracking code taken from SiD (org.lcsim)
CLIC000 very similar to SiD01
Same strategy (seed layers, confirmation layers, ...) used, since the detector has basically the same configuration.
Simulation of muons
Single muons:
Energy: 10 to 250 GeV
85 deg < theta < 95 deg, 360 deg phi
Single muons without multiple scattering
Z' (m=750GeV) to mu mu for collisions at 1 TeV
15 Okt. 2008
CLIC Workshop 2008

12. Tracking
SiD aim
15 Okt. 2008
CLIC Workshop 2008

13. Z' (750) mass reconstruction
Z'(750 GeV) →μμ , no background
15 Okt. 2008
CLIC Workshop 2008

14. Calorimetry Created 2 stacks for leakage tests
SiD01 configuration (~4.6λ hcal)
CLIC000 conficuration (~9λ hcal)
Need to know maximum energy of jet constituents
SID01
CLIC000
200 GeV π+
ecal
coil
hcal
tailcatcher
15 Okt. 2008
CLIC Workshop 2008

15. Calorimetry Average energy deposit less than 9λ possible
low statistics
15 Okt. 2008
CLIC Workshop 2008

16. Energy deposit in coil
Single events can have a significantly different shape
CLIC000
SiD01
100 GeV π+
15 Okt. 2008
CLIC Workshop 2008

17. 100 GeV π+ and e- in the CLIC000 Hcal
Calorimetry
Tungsten/Scint with current ratio is overcompensating (very short EM showers)
Change material or make finer hcal in order to not lose information
raw energy of
100 GeV π+ and e- in the CLIC000 Hcal
15 Okt. 2008
CLIC Workshop 2008

18. Conclusions The CLIC detector design study has been started
We try to use all synergies with ILC experiments
Software from SiD used by now which allows for quick changes of the detector configuration
Software package up and running
CLIC000 has been defined as a baseline detector (derived from SiD01)
Need some benchmark processes as input
Initial studies (tracking, calorimetry) have been done ...
... and many more will follow
15 Okt. 2008
CLIC Workshop 2008

19. Backup
15 Okt. 2008
CLIC Workshop 2008