Particle Counters, PDC

(return)

PDCs are a combination of Secondary Emission detectors, scintillators and Ionisation Chambers installed on a movable insert. The variable name in Lassi-spill is: GHTPDI1I (for ionization chamber), GHTPDI1P (scintillator) and GHTPDI1S (SEM detector).

Here is a list of all HEST PDCs used for transmission measurements:

GHADDI1P
GHADDI1I
GHADDI1S

GHADDI3P
GHADDI3I
GHADDI3S

GHHDDI1P
GHHDDI2I
GHHDDI2S

GHTADI2P
GHTADI3I
GHTADI3S

GHTCDI2P
GHTCDI2I
GHTCDI2S

GHTMDI5P
GHTMDI5I

GHTMDIAP
GHTMDIAI

GHTPDI1P
GHTPDI1I
GHTPDI1S

GHTPDI2S

GTE1DI1P
GTE1DI1I
GTE1DI1S

GTH1DI4P
GTH1DI4I
GTH1DI4S

GTH2DI2S

GTH2DIAS

GTH4DI7P
GTH4DI7I
GTH4DI7S

GTP1DI2D

GTS2DI1P
GTS2DI1I

GTT1DI6P
GTT1DI6I
GTT1DI6S

GTV2DI1P
GTV2DI1I

The data - number of counts - are available in FESA under Acquisition:integral (type double). Acquisition:rawData_status provides information if the data is within the detector range.

On November 26th, 2018 a calibration of the HADES PDCs against scintillators was done by Plamen. The calibration factors should be applied to number of particles. Here are there results:

Detector

Range

IC correction

HAD3DI

10uA

0.99

HAD3DI

100nA

1.01

HAD1DI

10uA

0.84

HAD1DI

100nA

0.84

TH1DI4I

10uA

1.04

TH1DI4I

1uA

1.04

TH1DI4I

100nA

1.04

TE1DI1I

10uA

1.06

TE1DI1I

1uA

1.06

TE1DI1I

100nA

1.06


2020-06-17 16:00