sensor and readout status of the pixel detector n.
Download
Skip this Video
Download Presentation
Sensor and Readout Status of the PIXEL Detector

Loading in 2 Seconds...

play fullscreen
1 / 20

Sensor and Readout Status of the PIXEL Detector - PowerPoint PPT Presentation


  • 159 Views
  • Uploaded on

Sensor and Readout Status of the PIXEL Detector. Talk Structure. Sensors Readout Development and Prototyping with test results. IPHC Functional Sensor Development. All sensor families:. 30 x 30 µm pixels CMOS technology Full Reticule = 640 x 640 pixel array.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Sensor and Readout Status of the PIXEL Detector' - kirkan


Download Now 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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
talk structure
Talk Structure
  • Sensors
  • Readout
  • Development and Prototyping with test results

Leo Greiner 2007-09-11 TC_Int

iphc functional sensor development
IPHC Functional Sensor Development

All sensor families:

  • 30 x 30 µm pixels
  • CMOS technology
  • Full Reticule = 640 x 640 pixel array

Mimostar 2 => full functionality 1/25 reticule, 1.7 µs integration time (1 frame@50 MHz clk), analog output. (in hand and tested)

Phase-1 and Ultimate sensors => digital output (in development)

Data Processing in RDO and on chip by generation of sensor.

The RDO system design evolves with the sensor generation.

Leo Greiner 2007-09-11 TC_Int

hft pixel readout functional goals
HFT PIXEL Readout Functional Goals
  • Triggered detector system fitting into existing STAR infrastructure (Trigger, DAQ, etc.)
  • Deliver full frame events to STAR DAQ for event building at approximately the same rate as the TPC (1 KHz for DAQ1000).
  • Reduce the total data rate of the detector to a manageable level (< TPC rate).
  • Reliable, robust, cost effective, etc.

Leo Greiner 2007-09-11 TC_Int

mimostar data flow
Mimostar Data Flow

System Goal:

10 Sensors / Ladder

33 Ladders

135M Pixel

Leo Greiner 2007-09-11 TC_Int

slide7

Raster scan

Data examined

Per clock cycle

Implemented in FPGA on daughter card

Leo Greiner 2007-09-11 TC_Int

cluster finder efficiency
Cluster Finder Efficiency

Real Data taken with MIMOSTAR2 detectors by IPHC

Traditional ADC Sum Method

2 Threshold FPGA method

Cut on the central pixel goes from 14 to 8 ADC counts (left to right) every 1 ADC. 1 ADC = 7.1 e-.

Leo Greiner 2007-09-11 TC_Int

pixel data rates 1 khz
PIXEL Data Rates (1 KHz)
  • Rate @ R1 (2.5cm) = 52.9 / cm2
  • Rate @ R2 (6.5cm) = 10.75 / cm2
  • Rate @ R3 (7.5cm) = 8.76 / cm2 (at L = 1027)
  • Average event size = 114 KB
  • Data Rate = 114 MB/sec at 1KHz
  • 33 fibers
  • 33 RORC (6 readout PCs)

Leo Greiner 2007-09-11 TC_Int

prototype 3 sensor telescope
Prototype 3 Sensor Telescope

We tested the functionality of a prototype MIMOSTAR2 detector at the LBNL ALS and then in the environment at STAR during the last three weeks of the 2006-2007 run at RHIC. Our goal was to gather information on:

  • Charged particle environment near the interaction region in STAR.
  • Performance of our cluster finding algorithm.
  • Performance of the MIMOSTAR2 sensors.
  • Functionality of our interfaces to the other STAR subsystems.
  • Performance of our hardware / firmware as a system.
  • The noise environment in the area in which we expect to put the final PIXEL detector.

Leo Greiner 2007-09-11 TC_Int

telescope electronics rdo
Telescope Electronics / RDO

MimoStar2 chips on kapton cables

MOTHER

BOARD

DAUGHTER CARD

Control PC (Win)

STRATIX

Acquisition Server (Linux)

Leo Greiner 2007-09-11 TC_Int

RORC SIU

telescope sensors and mechanical housing
Telescope Sensors and Mechanical Housing

3 MIMOSTAR2 chips mounted as close together as reasonably possible on low mass kapton cables in a telescope configuration.

Leo Greiner 2007-09-11 TC_Int

mimostar2 telescope test at the als
Mimostar2 Telescope test at the ALS

1.2 GeV electrons at the ALS Booster Test Facility

Important

Due to un-terminated DAC pads on the sensor, our noise level was double the value achieved under ideal conditions at IPHC in France.

IPHC =>11-15 electrons at 30º C

LBL => 30-35 electrons at 28º C

MPV = 49 (Standard) and 43 (Radtol) ADC counts at ~230 electrons

Leo Greiner 2007-09-11 TC_Int

efficiency and accidental rates for als test
Efficiency and Accidental rates for ALS test

Merged cluster data – typically 2-3 hits per cluster.

Increased noise in sensors results in reduced performance.

Leo Greiner 2007-09-11 TC_Int

telescope installed at star
Telescope Installed at STAR

Magnet Pole Tip

Beam Pipe

Electronics Box

Telescope head – 1.45 m from interaction point just below beam pipe.

Leo Greiner 2007-09-11 TC_Int

star prototype run results
STAR Prototype Run Results

Typical CDS full frame event in one sensor. Clusters are clearly visible above the noise level.

  • Measured charged particle flux was ~ 3.9 merged clusters per sensor (1.7 µs integration time, L=81026 cm-2s-1).
  • Noise level of system in the STAR environment was 7.48 ADC counts, comparable to laboratory and ALS measurements.
  • Prototype system integrated with STAR Trigger, slow control and run control sub-systems. Events delivered to DAQ standard RDO PC.
  • TLD measured dose at head position, 325 rad over running time. This scales to an integrated dose of several hundred Krad / run.

Leo Greiner 2007-09-11 TC_Int

summary for beam runs
Summary for beam runs
  • RDO system with data sparsification implemented and functional for Mimostar2 sensors.
  • Prototype system characterized, but with increased noise.
  • Fully functioning interfaces between our prototype detector and STAR detector infrastructure.
  • Completed measurements of detector environment at STAR including induced electronic noise.

Leo Greiner 2007-09-11 TC_Int

some tasks and milestones for the next year
Some tasks and milestones for the next year
  • August 2008 – delivery of Phase-1 sensors from the foundry.
  • Develop new generation RDO system based on Virtex-5 FPGA.
  • Testing of Mimostar2, Mimostar3 and Mimosa22e sensors.
  • Prototype low radiation length cable.

Leo Greiner 2007-09-11 TC_Int

slide20
fin

Leo Greiner 2007-09-11 TC_Int