Yoke Instrumentation: ILD Muon System / Tail Catcher. Valeri Saveliev IAM, RAS, Russia DESY, Germany 3 June, 2016

Transcription

1 Yoke Instrumentation: ILD Muon System / Tail Catcher Valeri Saveliev IAM, RAS, Russia DESY, Germany 3 June, 2016

2 ILD Muon System/Tail Catcher µ - µ + Events/0.2 [GeV] Zh µ µ - X s = 250 GeV L int = 250 fb, P(e, e ) = (-0.8, +0.3) Signal+Background (MC) Fitted signal+background Fitted signal Fitted background [GeV] M recoil Valeri Saveliev ILD Muon System/Tail Catcher 2

3 ILD Muon System/Tail Catcher Muons final states HZ, Z > µµ is crucial for ILC Physics Program, Large area with high Hermicity, High efficiency of Identification and excellent hadron rejection, Possibility to Recover the Hadron Interaction Tail, Performance depends on integration with full detector Simulation crucial in design stage, Prototype construction and testing for realistic estimation of performance and cost, Cost Valeri Saveliev ILD Muon System/Tail Catcher 3

4 Muon System/Tail Catcher Modules: 3 Barrels 2 EndCaps Sizes: R min: R max: Length: N of Sensitive Layers 14 (16) 12 Valeri Saveliev ILD Muon System/Tail Catcher 4

5 Instrumentation of the Yoke Valeri Saveliev ILD Muon System/Tail Catcher 5

6 Simulation Detailed Description of ILD Magnet, Muon System/Tail Catcher Cryostat with Coils in Simulation Framework General view of Muon System in Simulation Framework Valeri Saveliev ILD Muon System/Tail Catcher 6

7 Instrumentation of the Yoke (Muon System/Tail Catcher) Simulation Cryostat : Detailed Geometry Instrumentation: 2 Scintillation Double Sensitive Layers Coil : Detailed Geometry, Coil Segmentation Yoke : Detailed Geometry based on Mechanical Design Instrumentation: Barrel: total 14 +(2) Layers 40(Sc) + 10*[100(Fe)+40(Sc)] +3*[560(Fe) + 40(Sc)] mm EndCup: total 12 Layers 10*[100(Fe)+40(Sc)] +2*[560(Fe) + 40(Sc)] mm Basic Option for the Simulation is Scintillator Cells 30 x 30 mm Valeri Saveliev ILD Muon System/Tail Catcher 7

8 Simulation Geometry of Stereolayers: ortogonal? Valeri Saveliev ILD Muon System/Tail Catcher 8

9 Simulation Results 10 GeV Single muons and pions in the Barrel and EndCup Region Valeri Saveliev ILD Muon System/Tail Catcher 9

10 Simulation Results µ-id efficiency(%) π contamination (%) µ-id efficiency(%) π contamination (%) Momentum [GeV/c] Momentum [GeV/c] 0 Muon Efficiency and pion Contamination as function of energy of single particles (color of the line is correspond to the layers of the Muon System which are used for identification) Valeri Saveliev ILD Muon System/Tail Catcher 10

11 Low Momenta Muon in Barrel Problem of Identification: 3 GeV Single Muons in the Barrel Region Due to Multipliscattering and Magnetic Field, muons partially don t reach Muon Sensitive Layers Valeri Saveliev ILD Muon System/Tail Catcher 11

12 Muon Identification Performance 50 GeV b-jet in the ILD, PFA Reconstruction (red-muon tracs), Not all Muons could be identified as Muons by Muon System Valeri Saveliev ILD Muon System/Tail Catcher 12

13 Simulation Results Muon Identification Efficiency and pion Contaminations in b-jet, normalised on the energy of muons in b-jets > 5 GeV(color of the line is correspond to the layers of the Muon System which are used for identification) Valeri Saveliev ILD Muon System/Tail Catcher 13

14 Muon Reconstruction Performance Single Particles (muons) reconstruction in ILD PFA Valeri Saveliev ILD Muon System/Tail Catcher 14

15 Tail Catcher Significance Effect of Coil and Tail Catcher on the Energy Resolution RMS/E [%] CALICE Without TCMT Layers After Emulated Coil With TCMT Layers After Emulated Coil - 20 GeV π Thickness of Calorimeter System [λ n ] Comparison of energy RMS for 20 GeV pions with an emulated coil with and without TCMT contribution Effect of Tail Catcher on the Energy Resolution: RMS Visible Energy of Pions without and with Muon System as Tile Catcher Valeri Saveliev ILD Muon System/Tail Catcher 15

16 R&D Muon System/Tail Catcher Detector Technologies: > Scintillator Strip with Silicon Photomultiplier Readout > Resistive Plate Chamber Valeri Saveliev ILD Muon System/Tail Catcher 16

17 R&D Sensitive Elements Technology Resistive Plate Chamber (RPC) are considered as option of Sensitive Elements Main advantage is excellent granularity up to 1 x 1 cm 2 Pads, One threshold (1 bit) Digital Readout. Several Types of RPCs have been successfully constructed and tested within ILC R&D program Valeri Saveliev ILD Muon System/Tail Catcher 17

18 R&D Sensitive Elements Technology The Main Option for the Sensitive Elements Is Scintillator Strip with Wave Length Shifter and Silicon Photomultiplier Readout The technology: Extruded Scintillation Strips with ü thickness of ~10 mm, ü width of ~30 mm, ü Maximal length of ~2800 mm. ü Scintillation Strips are covered by the Reflection Layer TiO 2 that is coextruded along side the Scintillator during the extrusion Process. ü 1mm wide extruded groove running along the strip ü Commercially available WLS fiber ~1 mm diameter Valeri Saveliev ILD Muon System/Tail Catcher 18

19 R&D Sensitive Elements Technology Simulation of the Light Propagation and Detection Scintillation UV Photons created by Muon in Sensitive Element Converted Green Photon in WLS (Scintillation Photons are hidden) Valeri Saveliev ILD Muon System/Tail Catcher 19

20 R&D Sensitive Elements Technology Element strip, m) 2, 50 µm pixels) mamatsu 1 mmthe preliminary results: Light Yield from both sides of WLS fiber Valeri Saveliev ILD Muon System/Tail Catcher 20

21 R&D Sensitive Elements Technology Scintillator Strips with WLS production: The equipment is not so complicated, actually it could be easily build in China.. (We have already production line for Scintillator Crystal - LySO ) Valeri Saveliev ILD Muon System/Tail Catcher 21

22 R&D Sensitive Elements Technology Silicon Photomultiplier Development: > CMOS Silicon Photomultiplier, > 3D-IC SiPM, > 3D-IC Digital Silicon Photomultiplier, Valeri Saveliev ILD Muon System/Tail Catcher 22

23 R&D CMOS SiPM > Bias V, > Excellent Single Photon Performance, > Optic Crosstalk Suppression pnbjt_array_250_130ns_2us_10v_13.25v counts 250 Q1 Entries Mean RMS channel Valeri Saveliev ILD Muon System/Tail Catcher 23

24 R&D CMOS SiPM SiPM was developed in CMOS TECHNOLOGY (180 nm) and produced in China IMPORTANT points: ü Can be produced at any place in the world, at any CMOS Facility, ü Not needed the Quality Check, Quality Check is provided by CMOS Facilities, ü Lowest cost, ü Open way for the Advanced Developments Valeri Saveliev ILD Muon System/Tail Catcher 24

25 R&D Test Bench Huazhong University of Science and Technology, China Already with Support of University Created World Class Technology Test Lab s for Silicon Photomultiplier Development Valeri Saveliev ILD Muon System/Tail Catcher 25 18/04/

26 R&D Test Bench Already with Support of HUST Created World Class Test and Development Lab s for Silicon Photomultiplier Investigations and Applications Plan to build of Muon Test Setup is ongoing Valeri Saveliev ILD Muon System/Tail Catcher 26 18/04/

27 R&D Muon System/Tail Catcher Advanced Silicon Photomultiplier Development: > 3D-IC SiPM, - dramatically increasing the detection efficiency, factor 2 > 3D-IC Digital Silicon Photomultiplier, - the SiPM principle operation is digital (elementary sensors pixels are sources of binary signals). Valeri Saveliev ILD Muon System/Tail Catcher 27

28 Requirements for ILD Muon System Mainly detected isolated particles, Typical Signal ~ (photons) photoelectrons per MIP on the face of SiPM, Dynamic range could be chosen ~ photons (pixels) Digital readout on the SiPM Chip even with local preliminary analysis Valeri Saveliev ILD Muon System/Tail Catcher 28

29 R&D SiPM Readout 3D InterConnection Technology: gives the possibility to build the completely digital SiPM with excellent performance ü ü ü detection efficiency ~ 80% (factor 2 in comparison to existing SiPMs) no analog electronics. digital output signal (already in number of photons) Sensors Digital Digital Memory Processing and Output We planed 3 layers: sensors, digital memory, processing electronics Valeri Saveliev ILD Muon System/Tail Catcher 29

30 Conclusion and Outlook Muon System: > Muon identification ~98% muon identification efficiency and correspondingly about 99% pions rejection at energy > 3.5 GeV Muons identification with energies < 3 GeV. Needs dedicated analysis > Muon Reconstruction in the ILD (PFA): d(1/pt) = GeV -1 d(d 0 ) = 2.5 microns Valeri Saveliev ILD Muon System/Tail Catcher 30

31 Conclusion and Outlook Tail Catcher: Improves energy resolution. In particular at high energies Full thickness instrumentation of yoke important for pion rejection (Also needed for achieving low stray field) Instrumentation of outer (thick) layers is useful for pion rejection. Much better than just one muon sensitive layer at the end. Increasing iron plate thickness from 10 to 20 cm will be study In addition, one very thick instead of three outer iron layers (each about 100tons) would be much more difficult to deal with (manufacturing, transportation and assembly) Coil Instrumentation: improvement of energy resolution for Hadrons useful for low energy muons identification Valeri Saveliev ILD Muon System/Tail Catcher 31