##############################################################################
#
#       PARAMETER FILE FOR THE PHG SIMULATION
#
#       RUN NAME:	Modified from fastTest PETblock to have 2 rings
#       CREATED:	Nov 2008
#       OWNER:		SimSET
#
#	This file gives parameters for PET block-based detectors.
#	It is intended for use with the fastTest suite.
#
#	This parameter file uses the block detector module.
#
##############################################################################

# GENERAL DETECTOR MODULE PARAMETERS
	# DETECTOR TYPE
	# detector_type can be simple_pet or simple_spect (these just apply Gaussian
	# blurring to the energy with no tracking through the detector), or planar,
	# dual-headed, cylindrical, or block (these are photon-tracking simulations)
	ENUM detector_type = block

	# FORCED INTERACTION
	# Photons can be forced to interact at least once in the detector array.  This
	# is an importance sampling feature.  It often slows down block detector simulations.
	BOOL do_forced_interaction = false

	# ENERGY RESOLUTION
	# Energy resolution is specified as a % full-width-half-maximum of a
	# reference energy.
	REAL    reference_energy_keV = 511.0
	REAL    energy_resolution_percentage = 20

	# HISTORY FILE
	# If a file pathname is given below, a list-mode (or history) file is created
	# giving all the photon information needed to continue the simulation
	# after the detector module.  Such a file is very big!
	# STR	history_file = ""
	# The file can be made somewhat smaller by reducing the number of
	# parameters recorded per photon--however, the file can no longer be used
	# as input to the binning module.
	#STR history_params_file = ""

# POSITIONING ALGORITHM:  WHERE TO PLACE THE DETECTED POSITION WITHIN BLOCK
	# BLOCKTOMO_POSITION_ALGORITHM
	# what algorithm should be used to convert the interactions within a
	# block into a detected position?  The current default is
	# = snap_centroid_to_crystal_center
	# which takes uses the center of the crystal nearest to the
	# energy-weighted centroid of the interactions in active areas
	# of the block as the detected position.  The other option is
	# = use_energy_weighted_centroid
	# which will just use the energy-weighted centroid as the detected
	# position - note the latter does not guarantee that the detected
	# position will fall within an active area in the block!
	ENUM blocktomo_position_algorithm = snap_centroid_to_crystal_center

# DEFINITION OF RING POSITIONS
# Rings are stacked axially.  The axial extent of one ring cannot
# overlap that of another.  (If such an arrangement of blocks is
# desired, it can be achieved in a single ring.)
NUM_ELEMENTS_IN_LIST blocktomo_num_rings = 2

	# PLACEMENT AND DEFINITION OF RING 0
	# The rings must be listed by increasing axial position.
	# A list of items must be given for each ring: the name of
	# the ring parameters file that defines it; the axial shift
	# (i.e., the axial position to shift the z=0 point of the slice
	# to); and the transaxial rotation, a counterclockwise
	# rotation between 0 and 360 degrees.

	# Ring 0
	NUM_ELEMENTS_IN_LIST	blocktomo_ring_description_list = 3
		STR		blocktomo_ring_parameter_file = "BGO.ringparms"
		REAL	blocktomo_ring_axial_shift = -1.6
		REAL	blocktomo_ring_transaxial_rotation =  0

	# Ring 1
	NUM_ELEMENTS_IN_LIST	blocktomo_ring_description_list = 3
		STR		blocktomo_ring_parameter_file = "BGO.ringparms"
		REAL	blocktomo_ring_axial_shift =  1.6
		REAL	blocktomo_ring_transaxial_rotation =  0