User`s guide

Parts of the Voyager-DE and Voyager-DE PRO Systems

Voyager

™

Biospectrometry

™

Workstation User’s Guide 1-23

• Linear detector—A device that detects ions that travel

down the flight tube. The linear detector measures ion

abundance over time and sends a signal to the digitizer

for conversion.

On the Voyager-DE PRO system, the linear detector is

used in Linear mode only. It is not used in Reflector or

PSD mode.

Linear detectors are hybrid high-current detectors

consisting of a single microchannel plate, a fast

scintillator, and a photomultiplier. These detectors have

superior tolerance for high ion currents.

NOTE: High Current detectors are standard on

Voyager-DE systems with serial number 1128 and

later, and Voyager-DE PRO systems with serial

number 6007 and later.

Additional

parts of the

Voyager-DE PRO

Parts unique to the Voyager-DE PRO mass spectrometer:

• Collision Cell—Provided with CID (Collision-Induced

Dissociation) option for enhanced fragmentation in PSD

analysis.

•Reflector—A single-stage gridded mirror that focuses

energy. In reflector mode, a uniform electric field is

applied to the mirror to reflect ions. Ion reflection:

• Filters out neutral molecules

• Corrects time dispersion due to initial kinetic

energy distribution

• Provides greater mass accuracy and resolution