The Generalized Parton Distributions (GPDs) can be measured through the exclusive hard processes. GPDs offer a possibility to determine the orbital angular momenta of quarks, and can be accessed by studying the Deeply Virtual Compton Scattering (DVCS). The DVCS process interferes with the Bethe-Heitler (BH) process where the incoming or outgoing electron/positron radiates a hard real photon in the coulomb field of the nucleon. This interference leads to measurable cross-section azimuthal asymmetries with respect to beam helicity, beam charge, and target polarization. These different types of the azimuthal asymmetries give access to the different terms of the GPDs. At HERMES DVCS processes were measured previously by itsforward spectrometer, however, the recoil protons could not be directly detected due to the acceptance of the spectrometer. Thus, the missing mass method was used to select the exclusive reactions. This method is limited by the resolutions of the detectors and the incapability to clean up the background from the semi-inclusive DIS process and the associated BH process. The associated BH process has a contribution of around 12% to the final exclusive data sample, and its effect to the azimuthal asymmetries is unknown. A Recoil Detector was built and installed at the beginning of 2006 to upgrade the HERMES forward spectrometer to measure the recoil protons. The Recoil Detector consists of three main sub-detectors: a silicon strip detector surrounding the target cell inside the beam vacuum in a scattering chamber, a scintillating fibre tracker, and a photon detector consisting of three layers of tungsten and scintillator bars. A large amount of data was collected with the Recoil Detector on unpolarized proton and deuteron targets in the years 2006-2007 by using the high intensity beams from HERA. The detectors have been commissioned over the last years, the first detector calibrations, the tracking reconstructions have also been accomplished for a first physics analysis.The azimuthal asymmetries with respect to the beam helicity wereextracted on the proton target from the data taken with the positron beam in2007. The asymmetries from the elastic BH/DVCS process have been extractedwith and without using the detected recoil proton information by the RecoilDetector. In addition, a small sample of associated BH process was collected viadetecting the pion^+ as a tag particle decaying from Delta^+. A first beam helicity asymmetry has been extracted based on this data sample.
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