Liquid Argon Monitoring

Liquid Argon Purity Monitoring

TEAM
TEAM LIST (ISN-Grenoble):

Auguste BESSON, Yves CARCAGNO, Gabriel MONDIN, Gérard SAJOT

NEW RESULTS ON THE ARGON PURITY

Argon purity measurement (Powerpoint) ,
Calorimeter Software and Commissioning Meeting, february 12th 2002
Results of december 2001 in 3 slides (Powerpoint)
Photos of the team
Talk at the D0-France meeting (in french) :
Last Argon purity measurements with the Argon Test Cell for RunII
(powerpoint), (January 24th 2001).
D0 note 3799 :
Argon purity measurements with the Argon Test Cell for RunII
(postscript), (PDF) (December 6th 2000).
Talk given at the D0-collaboration meeting
(October 12th 2000).

MONITORING THE ARGON PURITY

The amount of collected charges depends on the pollution.
Typical Alpha and Beta responses (eps) (RUN I)

First results at ISN:

Obtained with different pollution. The accuracy of the pollution is around 10%, which will be improved.

Alpha response (ps) (RUN II)

First measurements of the Argon Dewar at D0 (july 2000):

Preliminary results on purity of the argon from the dewar

REFERENCES

D0 Note Number: 000940
Title: D0 Liquid Argon Monitoring Hardware
Author(s): Blazey
Date: 3/1/91
M.L.Andrieux et al.
Response of an alpha source mounted in a liquid argon ionization
cell and read out in full charge collection mode,
NIM in phys. Res. A 427, 568-573,
(1999)

PHOTOS OF THE CRYOSTAT

ALPHA AND BETA CELLS

ELECTRONIC DEVICE
Scheme (ps) (by P.MARTIN)

Contact : A.Besson

Update : December 10th 2001