GIF tests status report: uninstallation data taking ended last Wed. - - PowerPoint PPT Presentation

gif tests status report uninstallation
SMART_READER_LITE
LIVE PREVIEW

GIF tests status report: uninstallation data taking ended last Wed. - - PowerPoint PPT Presentation

GIF tests status report: uninstallation data taking ended last Wed. Equipment removal till last Friday tnx Joerg v. Loeben and Steffen!! Lead bricks and holding structure removed yesterday with the crane LMU driver will


slide-1
SLIDE 1

GIF tests status report: uninstallation

  • F. Legger – MPI, May 14, 2008
  • data taking ended last Wed.
  • Equipment removal till last Friday
  • tnx Joerg v. Loeben and Steffen!!
  • Lead bricks and holding structure removed yesterday with

the crane

  • LMU driver will bring everything back to Munich on May 23
slide-2
SLIDE 2

GIF tests status report: data

  • F. Legger – MPI, May 14, 2008
  • 14 M + 4 M + 2 M + 120k = 20 M evts collected
  • Threshold scan (34-36-38 mV) ~ 1M evts each;
  • Counting rate scan (0, 800, 1100, 1500 Hz/cm2) ~ 1 M evts each;
  • HV scan (2700V, 2745V) with source on/off ~ 1 M evts each;
  • Atlas settings for electronics with source on/off ~ 1 M evts each;
  • Time over Threshold scan with source on/off and threshold scan

(34-36-38-40-42-44 mV) ~ 10k evts each.

Tnx to the GIF crew: Felix, Markus, Jurgen, Carl-Friedrich, Julia, Albert, myself

slide-3
SLIDE 3

Analysis status

  • F. Legger – MPI, May 14, 2008
  • Calibration nutples produced for all runs taken so far;
  • Meeting on Friday with Oliver and Felix to best coordinate

analysis efforts;

  • Albert started working on Garfield simulations and sent first

plots (limited statistics).

slide-4
SLIDE 4

GIF tests: the future

  • F. Legger – MPI, May 14, 2008
  • Test a prototype chamber

(surface ~1 m2);

  • GIF is booked till the end of

2008, but can be used till end 2009;

  • We will probably be ready to start

beginning 2009;

  • Concern about setup

dimensions: 1.2 m (width) x 2.5 m (length).

Gas DAQ

GIF

Gas DAQ

GIF

Gas DAQ

GIF

COMPASS ATLAS

slide-5
SLIDE 5

spare slides

slide-6
SLIDE 6

02/08/08

  • F. Legger

6

The setup at the GIF

Gas DAQ Source Cs 137 590 GBq ATLAS COMPASS LHCb

slide-7
SLIDE 7

02/08/08

  • F. Legger

7

The setup at the GIF

LHCb MWPC chamber 6 1-m-long small tubes

slide-8
SLIDE 8

02/08/08

  • F. Legger

8

Our dangerous DAQ

cabling which will have to be redone by May 1st GIF entrance

slide-9
SLIDE 9

02/08/08

  • F. Legger

9

The setup at the GIF: a closer look

COMPASS LHCb cosmic muon

  • ref. chambers 50 cm

long standard MDT tubes 6 1-m-long small tubes

slide-10
SLIDE 10

02/08/08

  • F. Legger

10

The setup at the GIF: the trigger

COMPASS LHCb cosmic muon

big scintillator moved from top to in between the two bottom layers 2 layers of 6 scintillators each

Scintillators shielded by 120 lead bricks!

slide-11
SLIDE 11

02/08/08

  • F. Legger

11

GIF tests: shielding

LHCb MPWC

drawing not to scale! reference chamber lower multilayer shielded by Pb wall small tubes and upper multilayer shielded by LHCb chamber

slide-12
SLIDE 12

02/08/08

  • F. Legger

12

GIF tests: drift time spectra (no irradiation)

  • threshold 38 mV
  • first hit, no tracking

t max ~ 200 ns

slide-13
SLIDE 13

02/08/08

  • F. Legger

13

GIF tests: drift time spectra (no irradiation)

  • threshold 38 mV
  • first hit, no tracking

t max ~ 700 ns

slide-14
SLIDE 14

02/08/08

  • F. Legger

14

GIF tests: drift time spectra (full irradiation)

  • threshold 36 mV
  • analysis needed!

Lead shielding