Gamma ray collimators

SENTINEL gamma ray colimators
code TCN782, code TCN783
code TCN784, code TCN827
code TCN828, code TCN846
code TCN799

Collimators contain and direct the beam of radiation during exposure. This results in an improved radiograph quality and safer operating conditions. Most collimators are compatible with standard SENTINEL source guide tubes and source stops. A wide range of collimators have been developed to meeet the variety of applications and techniques used.

Lead collimator code TCN782

Consists of a lead inner and a welded steel outer casing. A mounting bracket is supplied to attach the collimator to a 660 source projector. The collimator can be rotated to any desired exposure position before the source is exposed.

Specifications

Shielding material
Lead.

Dimensions
Length: 130.2mm (5 9/64in).
Diamter: 89mm (3 1/2in).
Weight: 6.8kg (15lb).

Beam size
60° x 30°, side throw.

Attenuation
Iridium-192: 0-0025. Cobalt-60: 0.15.

Number of half value layers
Iridium-192: 8.6. Cobalt-60: 2.7.

Lead colimator, code TCN783

Consists of a lead inner and a welded steel outer casing. A mounting bracket is supplied to attach the collimator to a 660 source projector. The unit can be rotated by 90°.

Specifications

Sheilding material
Lead.

Dimensions
Length: 130mm (5 1/8in).
Diameter: 90mm (3 1/2in).
Weight: 6.8kg (15lb).

Beam size
30° x 60° panoramic.

Attenuation
Iridium-192: 0.0025. Cobalt-60: 0.15.

Number of half value layers
Iridium-192: 8.6. Cobalt-60: 2.7.

Lead colimator, code TCN784

Consists of a lead inner and a welded steel outer casing. A mounting bracket is available seperately to attach the collimator to a 660 source projector. Different panoramic angles can be supplied on special request..

Specifications

Sheilding material
Lead.

Dimensions
Length: 130mm (5 1/8in).
Diameter: 90mm (3 1/2in).
Weight: 6.8kg (15lb).

Beam size
20° x 360° panoramic.

Attenuation
Iridium-192: 0.0025.

Number of half value layers
Iridium-192: 8.6.

Tungsten collimator, code TCN827

Can be mounted directly onto a 660 source projector, or attached to an intermediate guide tube.
The radiation beam emerges from the side port as a 60° cone. The collimator can be rotated to any desired exposure position before the source is exposed.

Specifications

Shielding material
Tungsten.

Dimensions
Length: 89mm (3 1/2in).
Diameter: 51mm (2in).
Weight: 1.90kg (4lb 4oz).

Beam size
60° conical, side throw.

Attenuation
Iridium-192: 0.009. Cobalt-60: 0.26.

Number of half value layers
Iridium-192: 6.8. Cobalt-60: 1.9.

Tungsten collimator, code TCN828

Can be mounted directly onto a 660 source projector, or attached to an intermediate guide extension.
The radiation beam emerges from the side port as a 60° cone.

Specifications

Dimensions
Length: 114mm (4 1/2in).
Diameter: 64mm (2 1/2in).
Weight: 4.3kg (9lb 8oz).

Beam size
60° conical, side throw.

Attenuation
Iridium-192: 0.003. Cobalt-60: 0.17.

Number of half value layers
Iridium-192: 8.3. Cobalt-60: 2.5.

Tungsten collimator, code TCN846

Can be attached directly to the source guide tube extension, or mounted directly onto a 660 source projector. The collimator consists of a stainless Steel housing containing two shaped tungsten inserts.

Specifications

Dimensions:
Length: 83mm (3 1/4in).
Diameter: 57mm (2 1/4in).
Weight: 1.90kg (4ib 4oz).

Beam size
20° x 360° panoramic.

Attenuation
Iridium-192: 7.8. Cobalt-60: 2.4.

Number of half value layers
Iridium-192: 7.8. Cobalt-60: 2.4.

Tungsten collimator, code TCN799

Can be attached directly to an intermediate guide tube. It is held in position by means of a knurled thumb screw. The radition beam emerges from the side port as a 60° cone.

Specifications

Shielding material
Tungsten.

Dimensions:
Length: 47mm (1 27/32 in).
Diamater: 38mm (1 1/2 in).
Weight: 795g (1lb 12oz).

Beam size
60° conical, side throw.

Attenuation
Iridium-192: 0.05. cobalt-60: 0.46.

Number of half value layers
Iridium-192: 4.3. Cobalt-60: 1.12.

SENTINEL gamma ray collimators
code TCN714, code TCN717
code TCNL719, code TCNU719
code TCN529

Collimators contain and direct the beam of radiation during exposure. This results in an improved radio-graph quality and safer operating conditions. Most collimators are compatible with standard SENTINEL source guide tubes and source stops. A wide range of collimators have been developed to meet the variety of applications and techniques used.

Lead collimator, code TCN714

A lighter weight collimator designed for use with iridium-192. The radiation beam emerges from the side port as a 60° cone. The unit accommodates a standard source stop (code TAN691) which is held in place by two securing screws.

Specifications

Shielding material
Lead.

Dimensions
Length: 89mm (3 1/2in).
Width: 114.3mm (4 1/2in).
Depth: 44.5mm (1 3/4in).
Weight: 1.4kg (3lb).

Beam size
60° conical, side throw.

Attenuation
Iridium-192: 0.014. Cobalt-60: 0.32.

Number of half value layers
Iridium-192; 6.2. Cobalt-60: 1.7.

Lead collimator, code TCN717

A lighter weight collimator designed for use only with iridium-192. The radiation beam emerges from the side port as a 60° cone. The unit is larger than the TCN714 to accomodate the source stop switch assembly, code TAN723.

Specifications

Shielding material
Lead.

Dimensions
Length: 82.3mm (3 1/4in).
Width: 120.7mm (4 3/4in).
Depth: 51mm (2 1/16in).
Weight: 1.4kg (3lb).

Beam size
60° conical, side throw.

Attenuation
Iridium-192: 0.014.

Number of half value layers
Iridium-192; 6.2.

Depleted uranium and lead collimator, code TCNL719 or TCNU719

Both collimators have a shield of 6.4kg (14lb) of depleted uranium behind the exposed source position providing a high level of radiation protection.
The collimator code THCNL719 is supplied with two stainless steel clad, lead filled, beam shaping discs whereas the collimator code TCNU719 is supplied with stainless steal clad, depleted uranium filled beam shaping discs. An optional adjustable labstand is avaialble. Each disc is easily mounted on the front of the main shield by means of two knurled thumbnuts therefore minimising the time taken to change from mode to the other.
Panoramic exposures are made by inserting the 20° x 360° disc. Directional exposure are made by inserting the 30° x 60° disc. A signal switch and connector are built into the collimators for use with a source position indicator. The switch actuates when the source is correctly positioned in the exposed condition.

Specifications

Shielding material
Lead and depleted uranium.

Dimensions
Length: 203.2mm (8in).
Diamter: 114.3mm (4 1/2in).
Total weight: 10kg (22lb).

Insert weight
Lead: 4.5kg (10lb).
Depleted uranium: 6.4kg (14lb).

Beam size options
30° x 60°, directional.
20° x 360°, panoramic.

Attenuation with lead inserts
(Collimator TCNL719)
Iridium-192: 0.0016. Cobalt-60: 0.125.

Number of half value layers:
Iridium-192: 9.3. Cobalt-60: 3.0.

Attenuation with depleted uranium inserts
(Collimator TCNU719):
Iridium-192: 0.00005. Cobalt-60: 0.016.

Number of half value layers
Iridium-192: 14.3. Cobalt-60: 5.9.

Lead collimator, code TCN527

A versatile unit with the option of two beam sizes. It is supplied with two stainless steel clad, lead filled, beam shaping discs. An optional adjustable labstand is available. Each disc is easily mounted on the front of the main shield by means of two knurled thumbnuts therefore minimising the time taken to change from one mode to the other.
Panoramic exposures are made by inserting the 20° x 360° disc. Directional exposures are made by inserting the 60° conical disc. A signal switch actuates when the source is correctly positioned in the exposed condition.

Specifications

Shielding material
Lead.

Length: 203.2mm (8in).
Diameter: 114.3mm (4 1/2in).
Weight: 14.5kg(32lb).

Beam size options
60degree directional, 20degree x 360degree panoramic.

Attenuation
Iridium-192: 10.0. Cobalt-60: 0.1.

Labstand, code TCN46403

Designed to fit TCNL719, TCNU719 and TCN527 collimators. Adjustments are provided on the stand which allow positioning of the collimators to give the desired beam orientation.

Specifications

Length: 915mm (36in).
width: 510mm (20in).
Height, folded: 152mm (6in).
Weight: 8.2kg (18lb).