Detector naming scheme for the COMPASS detectors

Detectors are named by a 8-character long string:

DDCC0Pla

where

DD	2 characters	specifying the detector type (e.g. ST for straw)
CC	2 digits	for the station number
O	1 char.	specifying orientation to be measured (X,Y,(+)U,(-)V, P(ixel))
P	1 digit	specifying the plane number in the chamber (within the specified orientation)
l	1 char.	specifying layer position in a plane (upstr.,downstr.) if any
a	1 char.	specifying additional detector parameters (left,right,center,top,bottom) if any

Trackers
Detector	DD	CC	O	P	l	a
MPWC A chambers	PA	01-06	XUV	1	_	_
MPWC B chambers	PB	01-06	XU,XV	1	_	_
MPWC A special (aka Star)	PS	01	XYUV	1	_	_
Saclay DCs	DC	01-02	XYUV	1-2	_	_
MicroMegas	MM	01-03	XYUV	1	_	_
GEMs	GM	01-10	XY,UV	1	_	_
Straws	ST	01-03	XYUV	1-2	u,d	a,b,c (top)
Silicons	SI	01-??	XYUV	1	_	_
SciFibers	FI	01-08	XY,UV	1	_	_
MW1	MA	01-02	XY	1	u,d	a,b,c
MW2	MB	01-02	XYU	1	u,d	a,b,c
Particle ID
ECalorimeters	EC	01-02	P	1	_	_
HCalorimeters	HC	01-02	P	1	_	_
RICH	RI	01-02	P	(chmbs) 0-7	_	u,d (caths)
Hodoscopes
unprimed	HO(uter)	04-05	XY	1	_	u,d
primed	HM(edium)	04-05	XY	1	_	u,d
doubleprimed	HI(nner)	04-05	X	1	_	u,d
ladder	HL(adder)	04-05	X	1	_	j,s
Veto	VT	01-02	XYP	1	_	_

So a station is defined by 4 digits DDCC, e.g.: PA05, EC02, GM10.

A detector plane can have 6 digits, e.g. DC01X2, or 8 digits, e.g. ST02Y1uc