Booster Radiation Damage Facility (RDF)

Some HistoryThe Radiation Damage Facility originated in the AP4 beam line, used primarily for testing the D0 Vertex Detectors.

The advent of the MI8 line and the MI precludedfurther use of the AP4 dump for this purpose.

The present facility was constructed in the 8Gev transfer line enclosure between the Booster and the Main Ring / Tevatron.

RDF and Booster Layout

AP4 Dump

Linac

Booster

8 Gev Dump

RDF Dump

PBar

MI8 Line

8 Gev Line

RDF Beam Characteristics

Charge per Hour = 5.2e15 protons/hour

Charge = # pulses/hour * Intensity/pulse

Ex 1200 * 4.3e12 = 5.16 e12 protons

Minimum Charge per pulse ~ 0.25e11 protons

Dump Annual Limit = 3.8 e 18 protons

Beam width is typically ~25 mm H & V

RDF Operations

The RDF facility is operated from within the Beams Division.

Use of the facility requires submission and approval of a formal written RUN request to the RDF Safety Committee. This committee makes a recommendation to the Beams Division Head who has final approval of a run.

There are limits…..

-- Beam requires dedicated operation.

-- Available beam time during HEP is virtually non

existent.

-- High intensity irradiation of dense targets unlikely to be

approved.

-- We provide the beam, the users provides everything else.

Installation

The DO Test Apparatus