1 / 9

Silicon sensors for LumiCal Two possible options

Silicon sensors for LumiCal Two possible options. Wojciech Wierba Institute of Nuclear Physics PAN Cracow. Pads. 12 sectors in  (15 ° ) 15 cylinders in r (width 13.33 mm) 180 pads on half plane. Inner pad - ~302 mm 2 Outer pad - ~955 mm 2 Capacitance ratio = ~3.16.

freya-petersen
Download Presentation

Silicon sensors for LumiCal Two possible options

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Silicon sensors for LumiCalTwo possible options Wojciech Wierba Institute of Nuclear Physics PAN Cracow

  2. Pads • 12 sectors in  (15°) • 15 cylinders in r (width 13.33 mm) • 180 pads on half plane • Inner pad - ~302 mm2 • Outer pad - ~955 mm2 • Capacitance ratio = ~3.16 Odd and even planes rotated by 7.5 deg

  3. Strips • 64 concentric strips (width 3.125 mm) • 60 radial strips (3°) • Inner concentric strip - ~800 mm2 • Outer concentric strip - ~2734 mm2 • Capacitance ratio = ~3.42 • Radial strips - ~1885 mm2

  4. Wafer size • Small wafers are not suitable, causes a lot of tiles per half plane • Best wafer size – 24 inch – not available • 12 inch wafer acceptable (~300 mm dia)

  5. Tiles of the sensors for both options (12” wafer)

  6. Gap between tungsten plates • Support to glue tiles and place for the electronics • Ceramic plate ~0.5 mm thick • Silicon sensor ~0.3 mm thick Half plane of the detector will consist 3 tiles The gap between tungsten plates should be in order of 1 mm

  7. Comparison of the two options

  8. More realistic MC • Rotation of the odd and even planes • Angle: pads – 7.5°, strips - 7.5° ? • Gaps between tiles (~0.1 – 0.2 mm to be discussed) • Pads edges, guard rings • Concentric stripes divided in 3 parts for half plane • Gap between tungsten plates ~0.8 – 1.0 mm

  9. Conclusions • Both options are comparable • Number of channels is near the same • Resolutions (energy & angular) are near the same • Strips needs 2 masks • Strips needs probably 2 types of amplifiers • Pads have more complicated bias and coupling connections

More Related