1. Preparation for Station Acceptance Test
Contents
Rig
Readout/DAQ
06/08/2006
M. Takahashi

2. Room Layout Yellow film over the window + some yellow desk lamps
06/08/2006
M. Takahashi

3. Rig Components Light box: optical base going back to Brunel?
Mechanical:
Station holder – “spider” usded for tracker frame
Source holder, garage, patch panels to be mades
X-Y stage: delivery mid-August
35cm x 45cm travel (allow for a garage)
4μm precision (set by the rotary encoder)
Co57 Source: lead time 6 weeks
1mm active diameter rod-type capsule
111MBq activity  ~ 103 compton scattering per ch per sec
Waveguides:
5 (+ spare?) sets of 165cm:265m internal:external waveguides from Osaka
06/08/2006
M. Takahashi

4. Readout System (Testbeam)? ?
06/08/2006
M. Takahashi

5. Data Rate AFEIIt (L) 512 ch VLSB (4 mem. banks) 4 x 128 ch 1 station
VLPC
cassette
1024 ch
AFEIIt (R)
512 ch
VLSB (4 mem. banks)
4 x 128 ch
max data for this system
(1 cassette / 1 station) x (2 x AFEIIt / cassette) x (1 VLSB / AFEIIt)
x (4 memory banks / VLSB) x (4 bytes * 255 words / memory bank)
= 8,160 bytes / event @ ~1k Hz
data for the channels in use
(640 channels = 5 memory banks) x (4 bytes * 255 words)
= 5,100 bytes / event @ ~1k Hz
(150mm/1.05mm) x (150mm/1.21mm) x pi ~ 56k points to survey (?)
 56k x 3ch x 10k events x 8 kbytes = 13.5 TB (no zero suppression)
06/08/2006
M. Takahashi

6. Trigger and Software AFEIIt can be self-triggered
(modification of firmware, Paul Rubinov et al.)
Threshold at 3 p.e.
Online zero suppression?
Operation on a pc:
Stage control
Run control (start, stop, pause?)
DAQ: get data from VME  cluster finding  sort  store
(KEK testbeam – “UniDAQ”, D0 AFE test stand – Visual Basic)
Slow control for VLPC via 1553
(Can we use Malcolm’s code from testbeam?)
VME-PCI: which one?
NI, SBS (KEK testbeam), CAEN
06/08/2006
M. Takahashi

7. Run Type Pedestal run (check noise)
Readout continuously with fixed clock cycle in absence of beam
~1k events?
Calibration run (check gain?)
Use LED (~525nm) to inject light into the patch panel connectors?
 require defined repeatable pulses
Use normal trigger
Source scan run
Move Co-57 source over the station
Pause after each “row” to allow for data management?
Trigger with 3 p.e. threshold
pause position
06/08/2006
M. Takahashi

8. Readout Checklist quantity where when notes VLPC + cryo
He tank + regulator
power supply? 1
FNAL
IC (rental) ?
- being arranged
- monitor/control
AFEIIt
1L + 1R
- production version
VLSB 2
FNAL?
SASeq
1553
6U VME crate IC
available
VME-PCI
IC/purchase -
NI/SBS/CAEN?
Cables:
AFEIIt to VLSB
AFEIIt to SASeq
AFEIIt to 1553
2 x 4-way
1 x (2-1?)
06/08/2006
M. Takahashi

9. Outlook Rig: ready by when station 5 assembly completes (Sept)
Readout: depends on the availability of the components…
set up the “environment”
further planning for the software (DAQ, control, monitoring) and calibration
06/08/2006
M. Takahashi