The dose rate dependence of synthetic diamond detectors in the relative dosimetry of high-energy electron therapy beams

Feasibility study of silica bead thermoluminescence detectors (TLDs) in an external radiotherapy dosimetry audit programme

“…The large dynamic dose range of silica bead is particularly advantageous in these circumstances, compared to other well-established TLD materials, such as 1 mm 3 LiF: Mg, Ti cubes, which are designed for conventional radiotherapy dose range with an upper dose range limitation of 10 Gy. The independence of the silica bead dose response to beam angle and dose rate is of importance in diverse delivery techniques as used in this study and compares favourably with other detectors such as diamond detectors and ionisation chamber 2D-arrays with a dose rate and directional dose response [10,31,32].…”

Dosimetry for FLASH Radiotherapy: A Review of Tools and the Role of Radioluminescence and Cherenkov Emission

“…Multiple studies have investigated the dose-rate dependence of diodes and diamonds. Ade et al [52] found the fitting parameter for some diamond detectors to decrease by as much as 9% when the dose-rate was increased from 2.25 to 3.07 Gy/min. Interestingly, diamond detectors have been have been reported to show increased or decreased sensitivity with increasing dose per pulse depending on their construction i.e., pure crystals, Chemical Vapor Deposition (CVD), high-pressure high-temperature HPHT [52].…”

“…Ade et al [52] found the fitting parameter for some diamond detectors to decrease by as much as 9% when the dose-rate was increased from 2.25 to 3.07 Gy/min. Interestingly, diamond detectors have been have been reported to show increased or decreased sensitivity with increasing dose per pulse depending on their construction i.e., pure crystals, Chemical Vapor Deposition (CVD), high-pressure high-temperature HPHT [52]. While diamond detectors have not been extensively used for ultrahigh dose-rate experiments, a microDiamond detector type 60019 (PTW) was used for one proof-of-concept protonbased FLASH study by Patriarca et al [18].…”

An evaluation of a novel synthetic diamond probe for dosimetric applications

“…Added to percent depth ionization data measurements in a 3x3 cm 2 field for a 12 MeV electron beam, output factors (OFs) were used as a parameter to characterise the performance of the diamond probe under small-field electron and photon-beam conditions due to the importance of OF measurements in small-field dosimetry (Laub and Wong, 2003). The results for a 12 MeV electron beam OF measurements using small square fields ranging from 1 x 1 cm 2 to 5 x 5 cm 2 defined by lead cut-outs inserted in a 10 x 10 cm 2 open applicator defined field are reported in a previous study (Ade et al, 2014).…”