Design and characterization of a tissue-equivalent CVD-diamond detector for clinical dosimetry in high-energy photon beams

The X-ray detection performance of polycrystalline CVD diamond with pulsed laser deposited carbon electrodes

“…The value of Poly-C/Ni is nearly the same order as typical values suggested in the literature (50-135 nC/Gy.mm 3 ) [9,[20][21][22][23][24] for PTW natural diamond and for polycrystalline CVD diamond (~ 77 nC/Gy.mm 3 at a bias of 100 V) [10].…”

“…In the case of ∆ equals one, the integrated photocurrent of the device does not depend on the dose rate, which is an advantage in dosimetry applications. [9,[20][21][22][23][24] for both PTW natural diamond and synthetic CVD diamond devices. A similar result was reported by Buttar et al [22] for polycrystalline CVD diamond dosimeters with Cr/Au contact on both sides using 250 kV X-rays, where a slightly non-linear relationship with dose rate (∆ ≈ 0.91) was observed.…”

Investigation of the suitability of commercially available CVD diamond for megavoltage X-ray dosimetry

“…Exponent values reported in the literature lie in the range 0.92-1 for PTW diamond detectors [24][25][26][27][28][29], 0.86-1.035 for CVD diamond [24,25,[30][31][32], and 0.49-0.97 for HPHT diamond [13,14]. The values observed for the devices fabricated on Diamond Materials and Element Six diamond films are close to one and hence compare well to the literature.…”

“…A wide range of specific sensitivities have been reported for CVD diamond-based detectors, ranging from a few to over a thousand nC·Gy -1 ·mm -3 ; generally, the lower values (of up to ~100 nC·Gy -1 ·mm -3 ) appear to be reported for polycrystalline material grown in-house by the researchers [8,9,25,30,34], whereas the higher values were obtained using commercial CVD diamond, some of which was described as 'detector grade' [10,24,31,34,35]. Values between 18 and 164 nC·Gy -1 ·mm -3 have been reported for detectors based on HPHT diamonds [14].…”

Suitability of synthetic diamond films for x-ray dosimetry applications

“…Numerous research groups have reported their results of x-ray detectors based on CVD diamond, a selection of these can be found in [1,[3][4][5][6][7][8][9][10][11][12][13].…”