RICH Tables in STAF

This document will list information about every RICH table currently installed within PHENIX STAF.

Table: crkghit

Table Type: Simulation Data

Purpose: Contains GEANT hits for the RICH

Variable Type	Variable Name	Description
float	x	Global x coordinate of the hit
float	y	Global y coordinate of the hit
float	z	Global z coordinate of the hit
float	px	x component of the particle momentum
float	py	y component of the particle momentum
float	pz	z component of the particle momentum
float	tof	Time-of-flight
float	bp1	???
float	bp2	???
short	pid	GEANT particle ID
short	parent	Parent GEANT track id
short	pmt	Photomultiplier tube index
short	tra	???
short	nbf	???
short	bi1	???
short	bi2	???

Table: ctra

Table Type: Simulation Data

Purpose: Contains GEANT hits for the RICH

Variable Type	Variable Name	Description
float	x	Global x position of the hit
float	y	Global y position of the hit
float	z	Global z position of the hit
float	pvx	X component of the momentum at the origin vertex
float	pvy	Y component of the momentum at the origin vertex
float	pvz	Z component of the momentum at the origin vertex
float	vx	Global x coordinate of the origin vertex
float	vy	Global y coordinate of the origin vertex
float	vz	Global z coordinate of the origin vertex
short	pid	GEANT particle ID
short	itra	GEANT track number
short	detector	???

Table: dCrkGeo

Table Type: Parameter

Purpose: Contains geometry information for the RICH

Variable Type	Variable Name	Description
float	phi_cntr	Phi angle of the center of the two arms
float	phi_open	Phi opening half angle of the two arms
float	dphi_carm	Phi span of CARM outer envelope
float	dphi_cshe	Phi span of CSHE outer envelope
float	pmt_phi_min	Minimum phi angle covered by PMT array
float	pmt_phi_max	Maximum phi angle covered by PMT array
float	pmt_dphi	Phi angle per PMT row
float	r_pmt_ent	Radius of PMT entrance
float	dx_pmt[32]	Sideward displacement of PMTs from SM
float	r_pmt[32]	Radial position of PMTs
float	z_pmt[32]	Z position of PMTs
float	theta_pmt[32]	Theta angle of PMTs
float	mir_rin	Inner radius of the mirror
float	mir_thck	Thickness of the mirror
float	mir_theta1	Theta angle of the low z edge of the mirror
float	mir_theta2	Theta angle of the high z edge of the mirror
float	mir_thetacut	Theta angle of the mirror cover (effective area)
float	mir_phi1	Starting phi angle
float	mir_phi2	Ending phi angle
float	mir_dz	Displacement of the mirror center along the z axis
float	wi1_rin	Inner radius of the entrance window
float	wi1_thck	Thickness of the entrance window
float	wi1_zend	Z position of the entrance window edge
float	wi2_rin	Radius of the exit window
float	wi2_thck	Thickness of the exit window
float	wi2_zend	Z position of the exit window edge

Table: dCrkGhitRawPar

Table Type: Parameter

Purpose: Contains input parameters for the mCrkGhitRaw module

Variable Type	Variable Name	Description
short	ghitraw	Switch to turn on (1) or off (0) the ghitraw output
short	max_adc	Maximum value of the ADC
short	max_tdc	Maximum value of the TDC
short	min_tdc	Minimum value of the TDC
float	N0_pisa	N0 value used in the PISA simulation
float	sinTmax	Winston cone acceptance

Table: dCrkRawHitPar

Table Type: Parameter

Purpose: Contains input parameters for the mCrkRawHit module

Variable Type	Variable Name	Description
float	min_pe	Minimum pulse height of a hit

Table: dCrkProjPidPar

Table Type: Parameter

Purpose: Contains input parameters for the mCrkProjPid module

Variable Type	Variable Name	Description
short	in_accept	Flag whether or not in_accept condition is required
short	min_npmt	Minimum NPMT required to make Pid output

Table: dCrkCal

Table Type: Calibration

Purpose: Contains calibration constants for the RICH

Variable Type	Variable Name	Description
short	pmt	PMT channel ID
float	adc_gain	ADC channel per 1 photo-electron
float	adc_ped	Pedestal of ADC
float	tdc_clock	Number of TDC bins per nanosecond
float	tdc_t0	Timing 0
float	slew	Slewing parameter

Table: dCrkUcal

Table Type: Calibration / Simulation

Purpose: Contains un-calibration constants for the RICH

Variable Type	Variable Name	Description
short	pmt	Photomultiplier tube channel ID
float	gain	ADC channels per 1 photo-electron. 0 if the channel is dead
float	ped	Pedestal of the ADC
float	clock	Number of TDC bins per nanosecond
float	t0	Timing 0
float	slew	Slewing parameter
float	N0p	Photo-cathode N0 value
float	P_noise	Noise hit probability
float	mean_noise	Noise pulse height
float	sigma_pe	One photo-electron resolution
float	sigma_t	Time resolution for one photon

Table: dCrkRaw

Table Type: Date

Purpose: RICH raw data

Variable Type	Variable Name	Description
short	pmt	Photo-multiplier tube ID
short	adc	ADC value
short	tdc	TDC value

Table: dCrkHit

Table Type: Data

Purpose: Contains calibrated hit information for the RICH

Variable Type	Variable Name	Description
short	pmt	Photo-multiplier ID (0-5119)
float	npe	Normalized pulse height in terms of photo-electrons
float	time	Calibrated time of the hit in nanoseconds

Table: dCrkProj

Table Type: Data

Purpose: Contains track projection into the RICH information

Variable Type	Variable Name	Description
short	id	Primary key
short	track_id	Pointer to the reconstructed track
float	x[3]	Starting cartesian coordinates of the projection
float	u[3]	Direction vector of the projection

Table: dCrkPid

Table Type: Data

Purpose: Contains RICH particle identification information

Variable Type	Variable Name	Description
short	id	Primary key
short	proj_id	Pointer to dCrkProj.id
short	faccept	Set if in acceptance. Reset if out of acceptance.
short	npmt	Number of photomultiplier tubes associated to the track
float	npe	Sum of the pulse height of the photomultiplier tubes
float	timing	Corrected average timing of photomultiplier tube hits in nanoseconds
float	chi2	Chi-square per npmt of PMT hits
float	rdisp	Center displacement of PMT hits
float	Lpath	Path length from x of ray to xproj
float	xproj[3]	Projected position in RICH PMT array
float	chi2b	Narrow chi-square
float	dt	???

Table: dCrkTrk

Table Type: Special / Data (Unofficial)

Purpose: Contains perfect RICH tracking information

Variable Type	Variable Name	Description
short	ctr1	index of hit in CTR1
short	ctr2	index of hit in CTR2
short	itra	track number
short	pid	PID code
float	u[3]	Direction at CTR1 (unit vector)
float	x1[3]	Position at CTR1
float	pv[3]	Momentum vector at origin
float	vx[3]	Origin vertex

Table: dCrkRel2s

Table Type: Relational

Purpose: Generic relational table format for the RICH

Variable Type	Variable Name	Description
short	id1	Key for table 1
short	id2	Key for table 2

Jeffery T. Mitchell - mitchell@bnl.gov

Last modified 1/20/99